Examen de Practica Certificicacion HCIA-21-811

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Question 1 of 158

In the campus network planning, which of the following ways can business VLAN be divided?

Select one or more of the following:

A. Divide VLAN by geographical area
B. Divide VLAN by logical area
C. Divide VLAN by business
D. Divide vlan by access member structure

Explanation

Question 2 of 158

By default, the bridge priority of Huawei switches is 32768.

Select one or more of the following:

A. False
B. True

Explanation

Question 3 of 158

What is the total length of the VLAN frame format defined by IEEE802.1Q?

Select one or more of the following:

A. 3
B. 4
C. 2
D. 1

Explanation

Question 4 of 158

As shown in the figure, if host A and host B want to achieve inter-VLAN communication through single-arm routing, which configuration should be done under the G0/0/1.1 interface of RTA?

Select one or more of the following:

A. dot1q termination vid 20
B. dot1q termination vid 10
C. dot1q termination vid 30
D. dot1q termination vid 40

Explanation

Question 5 of 158

The DHCPv6 server supports providing other configuration information such as DNS server address for the host

Select one or more of the following:

A. True
B. False

Explanation

Question 6 of 158

In the network shown in the figure below, the bridge ID of the switch has been marked. Enter the command stp root secondary on the SWD switch, and which of the following switch will become the root bridge of this network?

Select one or more of the following:

A. SWA
B. SWC
C. SWD
D. SWB

Explanation

Question 7 of 158

PPPoE session can only use CHAP authentication

Select one or more of the following:

A. True
B. False

Explanation

Question 8 of 158

The router Radius information configuration is shown in the figure. Which of the following statement is correct? (Multiple Choice)

Select one or more of the following:

A. The IP address of the authorization server is 200.0.12.1
B. The IP address of the authentication server is 200.0.12.1
C. The IP address of the accounting server is 200.0.12.1
D. The source IP source address of the Radius packet sent by the router is 200.0.12.2

Explanation

Question 9 of 158

Which version of the SNMP protocol below supports encryption features?

Select one or more of the following:

A. SNMPv1
B. SNMPv2
C. SNMPv3
D. SNMPv2c

Explanation

Question 10 of 158

The Layer 2 switch is a data link layer device, which can identify the MAC address information in the data frame, forward data according to the MAC address, and record these MAC addresses and corresponding port information in its own MAC address table.

Select one or more of the following:

A. False
B. True

Explanation

Question 11 of 158

After the system restarts the static MAC address table, the saved entries will not be lost.

Select one or more of the following:

A. False
B. True

Explanation

Question 12 of 158

In the network shown in the figure below, all links are Ethernet links, and all interfaces of all routers run OSPF protocol, how many DRs are elected in the entire network?

Select one or more of the following:

A. 1
B. 4
C. 2
D. 3

Explanation

Question 13 of 158

On the broadcast network, both DR and BDR use the multicast address 224.0.0.6 to receive link state update messages

Select one or more of the following:

A. False
B. True

Explanation

Question 14 of 158

Which of the following statement about the TTL field in the IP packet header is correct?

Select one or more of the following:

A. Each time an IP packet passes through a router, its TTL value will be increased by 1
B. TTL defines the time interval at which the source host can send data packets
C. Every time an IP packet passes through a router, its TTL value will be reduced by 1
D. TTL defines the number of packets that the source host can send

Explanation

Question 15 of 158

In the network shown in the figure, the administrator hopes that all hosts cannot access the web service (the port number is 80), and other services are normally accessed, so in the interface configuration of G0/0/1, traffic-filtar outbound needs to define which ACL rule?

Select one or more of the following:

A. acl number 3000 rule 5 deny tcp destination-port eq www rule 10 permit ip #
B. acl number 3003 rule 5 permit ip rule 10 deny udp destination-port eq www #
C. acl number 3001 rule 5 deny udp destination-port eq www rule 10 permit ip #
D. acl number 3002 rule 5 permit ip rule 10 deny tcp destination-port eq www #

Explanation

Question 16 of 158

If the Ethernet data frame Length/Type=0X0806, which of the following statement is correct? (Multiple choice)

Select one or more of the following:

A. The source MAC address of the data frame must not be FFFF-FFFF-FFFF
B. The destination MAC address of the data frame may be FFFF-FFFF-FFFF
C. The data frame is an IEEE 802.3 frame
D. The data frame is an Ethernet II frame

Explanation

Question 17 of 158

In the network shown in the figure below, all routers run OSPF protocol, which device is ABR? (Multiple choice)

Select one or more of the following:

A. Router D
B. Router C
C. Router A
D. Router B

Explanation

Question 18 of 158

As shown in the figure below, which of the following statements are correct?

Select one or more of the following:

A. The following entry 10.0.12.5 MAC-B exists in the ARP cache of host A
B. Host A and Host B cannot obtain each other's MAC address
C. The broadcast address of host A and host B are the same
D. Host A can ping host B

Explanation

Question 19 of 158

The number of VLANs that can be created using the commands "vlan batch 10 20" and "vlan batch 10 to 20" respectively is

Select one or more of the following:

A. 2 and 2
B. 2 and 11
C. 11 and 2
D. 11 and 11

Explanation

Question 20 of 158

After the network administrator uses the TracertRoute function on the router device, in the data packet sent by the router, what is the value of the Protoco1 field in the IPv4 header?

Select one or more of the following:

A. 1
B. 17
C. 2
D. 6

Explanation

Question 21 of 158

Two authentication domains "Area1" and "Area 2" are configured on a router acting as an authentication server. If the user authenticates with the correct user name "huawei" and password "hello", this user will be assigned In which authentication domain?

Select one or more of the following:

A. Authentication domain "default_admin domain"
B. Authentication domain "Area2"
C. Authentication domain "default domain"
D. Authentication domain "Area 1"

Explanation

Question 22 of 158

On the VRP operating platform, what is the command to display the current interface configuration in the interface view?

Select one or more of the following:

A. display version
B. display ip interface brief
C. display users
D. display this

Explanation

Question 23 of 158

According to the command shown in the figure, which of the following description is correct? (Multiple choice )

Select one or more of the following:

A. The PVID of GigabitEthernet0/0/1 port is 10
B. The PVID of GigabitEthernet0/0/1 port is 11
C. The PVID of GigabitEthernet0/0/2 port is 10
D. The PVID of GigabitEthernet0/0/2 port is 1

Explanation

Question 24 of 158

Which planes of the following does a network device have? (Multiple choice)

Select one or more of the following:

A. Control plane
B. Management plane
C. Data plane
D. Business plane

Explanation

Question 25 of 158

The administrator wants all hosts to be unable to access the Internet between 8:00-17:00 every day, so which ACL rule needs to be bound to the traffic-filter outbound in the GO/0/1 interface allocation?

Select one or more of the following:

A. time-range am9topm5 08:00 to working-day Acl number 2003 rule 5 deny time-range am9topjni5
B. time-range am9topm5 08:00 to 17:00 off-day # acl number 2004 rule 5 permit time-range
C. time-range am9topm5 08:00 to 17:00 daily acl number 2001 rule 5 deny time-range am9topm5
D. time-range am9topm5 07:00 to 18:00 daily Acl number 2002

Explanation

Question 26 of 158

After the administrator successfully logs in to the router through Telnet, and finds that the router's interface IP address cannot be allocated, the possible reasons are ()

Select one or more of the following:

A. SNMP parameter is incorrectly configured
B. The Telnet user level is incorrectly configured
C. The Telnet user authentication mode is incorrectly configured
D. The administrator uses the telnet terminal software to prohibit the corresponding operation

Explanation

Question 27 of 158

In the history of WLAN development, which of the following is not included in the main wireless protocol standards in the primary mobile office era?

Select one or more of the following:

802.11ac
802.11g
802.11a
802.11b

Explanation

Question 28 of 158

Which of the following statements about the default route are correct? (Multiple Choice)

Select one or more of the following:

A. The default route can only be manually configured by the administrator
B. There must be a default route in the routing table of any router
C. If the destination address of the message cannot match any other routing entries in the routing table, the router will forward the message according to the default route
D. In the routing table, the default route appears as a route to the network 0.0.0.0 (the mask is also 0.0.0.0)

Explanation

Question 29 of 158

Which of the following descriptions about spanning tree designated ports is correct?

Select one or more of the following:

A. Each switch has only one designated port.
B. The designated port can forward configuration BPDU messages to the network segment connected to it
C. The port on the root switch must be a designated port.
D. The port on the root switch must not be a designated port.

Explanation

Question 30 of 158

In the broadcast network as shown in the figure, OSPF runs on four routers in the same area and on the same network segment. OSPF will automatically elect one DR and multiple BDRs to achieve better backup results

Select one or more of the following:

A. TRUE
B. FALSE

Explanation

Question 31 of 158

Which of the following IPv6 addresses is a multicast address?

Select one or more of the following:

A. 2000 :: 2E0 : FCFF : FEEF : FEC
B. FF02 :: 2E0 : FCFF : FEEF : FEC
C. FC00 :: 2E0 : FCFF : FEEF : FEC
D. FE80 :: 2E0 : FCFF : FEEF : FEC

Explanation

Question 32 of 158

The bridge ID of the STP protocol in the switching network is as follows. Which of the following bridge ID switches will become the root bridge?

Select one or more of the following:

A. 32768 00-01-02-03-04-AA
B. 4096 00-01-02-03-04-DD
C. 32768 00-01-02-03-04-CC
D. 32768 00-01-02-03-04-BB

Explanation

Question 33 of 158

If the MAC address of an interface is 0OEO-FCEF-OFEC, what is its corresponding EUI-64 address?

Select one or more of the following:

A. 00EO-FCFF-FEEF-0FEC
B. 02EO-FCEF-FFFE-0FEC
C. 02EO-FCFF-FEEF-0FEC
D. 00EO-FCEF-FFFE-OFEC

Explanation

Question 34 of 158

If the Proto of a route information in the routing table is OSPF, the priority of this route must be 10.

Select one or more of the following:

A. TRUE
B. FALSE

Explanation

Question 35 of 158

In order to realize the network layer function on VLANIF interface, what need to be configured on VLANIF interface? (Multiple choice)

Select one or more of the following:

A. IP address
B. Subnet mask
C. IP prefix
D. MAC address

Explanation

Question 36 of 158

The following rules exist in a certain ACL of the router. rule deny tcp source 192.168.1.0
0.0.0.255 destination 172.16.10.1 0.0.0.0 destination-port eq 21 Which statement is correct?

Select one or more of the following:

A. The type of ACL is a basic ACL
B. The source IP is 192.168.1.1, the destination IP is 172.16.10.1, and all TCP packets whose destination port number is 21 match this rule
C. The source IP is 192.168.1.1, the destination IP is 172.16.10.2, and all 1CP packets whose destination port number is 21 match this one
D. The source IP of the rule is 192.168.1.1, the destination IP is 72.16.10.3. All TCP packets with the destination port number of 21 match this rule

Explanation

Question 37 of 158

Which of the following IPv6 is a global unicast address?

Select one or more of the following:

A. FF::02::2E0:FCFF:FEEF:FEC
B. 2001::12:1
C. FEE:FCFF:FEEF:FEC
D. FF02::1

Explanation

Question 38 of 158

If the transport layer protocol is UDP, the value of the network layer Protocol field is 6

Select one or more of the following:

A. FALSE
B. TRUE

Explanation

Question 39 of 158

The two switches shown in the figure below have both enabled the STP protocol. Which port will eventually be in the Blocking state?

Select one or more of the following:

A. G0/0/3 port of SWB
B. G0/0/3 port of SWA
C. G0/0/2 port of SWA
D. G0/0/2 port of SWB

Explanation

Question 40 of 158

What is the maximum negotiation rate supported by the IEEE 802.11g standard?

Select one or more of the following:

A. 1200Mbps
B. 54KBPS
C. 150Mbps
D. 300Mbps

Explanation

Question 41 of 158

The configuration information of a interface of the router is shown in the figure, then which VILAN data packet can this port receive?

interface Gigabit Ethernet 0/0/2.30
dot1q terainat1on vid 100
ip address 10.0.21.1 255.255.255.0
arp broadcast enable

Select one or more of the following:

A. 1
B. 30
C. 100
D. 20

Explanation

Question 42 of 158

Which field is added to the IPv6 packet header than the IPv4 packet header?

Select one or more of the following:

A. Version
B. Destination Address
C. Flow Label
D. Source Address

Explanation

Question 43 of 158

Network equipment running the SNMP protocol can take the initiative to report alarm information so that the network administrator can discover the fault in time.

Select one or more of the following:

A. FALSE
B. TRUE

Explanation

Question 44 of 158

In the RSTP standard, in order to improve the convergence speed, the port that the switch is directly connected to the terminal can be defined as ( ).

Select one or more of the following:

A. Root port
B. Fast port
C. Edge port
D. Backup port

Explanation

Question 45 of 158

The MAC address table of a certain switch is shown in the figure. If the switch receives a data frame with a destination MIAC of 5489-9885-18a8 from port Eth0/0/2, which of the following statements is correct?

Select one or more of the following:

A. Forward this data frame from the Eth0/0/2 port
B. Discard this data frame
C. Forward this data frame from Eth0/0/1 port
D. Flood this data frame

Explanation

Question 46 of 158

If the Protocols of a certain route information in the routing table is Direct, the priority of this route is set to 0.

Select one or more of the following:

A. FALSE
B, TRUE

Explanation

Question 47 of 158

IPv6 address 2001: ABEF: 2240E: FFE2: BCC0: CD0: DDBE: 8D58 cannot be abbreviated.

Select one or more of the following:

A . FALSE
B. TRUE

Explanation

Question 48 of 158

The output information of a switch is shown in the figure. Which of the following interfaces can forward data frames with VLAN ID 40 and do not carry tags when forwarding?

Select one or more of the following:

A. GE0/0/4
B. GE0/0/2
C. GE0/0/3
D. GE0/0/5

Explanation

Question 49 of 158

Connection between switches and hosts, which port link type is often used by the switch?

Select one or more of the following:

A. Trunk link
B. Access link
C. Hybrid link
D. Trunk link

Explanation

Question 50 of 158

The picture shows the display startup information of AR2200 router. Regarding these information, which of the following statement is wrong?

Select one or more of the following:

A. The system file cannot be modified when the device is started next time
B. next system startup file system can use the command "startup system software <startup- software-name>" to modify
C. The system file used by the device this time is ar2220-v200r003c00spc00.cc
D. The running configuration file is not saved

Explanation

Question 51 of 158

As the figure shown: (Multiple Choice)

Select one or more of the following:

A. Client3 belongs to VLAN30, and the command for dividing VLAN on the switch is correct
B. Client4 belongs to VLAN40, and the command for dividing VLAN on the switch is correct
C. Client2 belongs to VLAN20, and the switch based on the MAC address division command is correct
D. Client1 belongs to VLAN10, and the command for dividing VLAN on the switch is correct

Explanation

Question 52 of 158

Regarding the IPv6 address 2031:0000:720C:0000:0000:09E0:839A:130B, which of the following abbreviations is correct?

Select one or more of the following:

A .2031:0:720C::9E0:839A:130B
B. 2031:0:720C:0:0:9E:839A:130B
C. 2031:0:720C:0:0:9E0:839A:130B
D. 2031::720C::9E0:839A:130B

Explanation

Question 53 of 158

Which of the following types of addresses is not included in IPv6 addresses?

Select one or more of the following:

A. Broadcast address
B. Anycast address
C. Multicast address
D. Unicast address

Explanation

Question 54 of 158

On the AC, you can manually specify the source address or source interface of the CAPWAP tunnel.

Select one or more of the following:

A. True
B. False

Explanation

Question 55 of 158

A network engineer prompts the following information when entering the command line:
Error: Unrecognized command found at ' ^ ' position. Which of the prompt information is correct?

Select one or more of the following:

A. The input command is incomplete
B. Input command is not clear
C. No keyword found
D. Wrong parameter type

Explanation

Question 56 of 158

In the network shown in the figure below, all routers run OSPF protocol. Above the link is the value of the Cost value, then the path for RTA to reach the network 10.0.0.0/8 is:

Select one or more of the following:

A. RTA cannot reach 10.0.0.0/8
B. A-D
C. A-C-D
D. A-B-D

Explanation

Question 57 of 158

By default, how long is the lease period of the IP address assigned by the DHCP server?

Select one or more of the following:

A. 18h
B. 24h
C. 1h
D. 12h

Explanation

Question 58 of 158

By default, network devices running SNMPv2c protocol use which of the following port numbers to send trap messages to the network management system?

Select one or more of the following:

A. 17
B. 162
C. 6
D. 161

Explanation

Question 59 of 158

Which field of the ipv6 packet header can be used for QoS?

Select one or more of the following:

A. Traffic Class
B. Version
C. Next Header
D. Payload Length

Explanation

Question 60 of 158

On the VRP platform, the default protocol priority of routes in the direct routing, static routing, RIP, OSPF area is:

Select one or more of the following:

A. Direct routing,Static routing,RIP,OSPF
B. Direct routing,OSPF,RIP,Static routing
C. Direct routing,OSPF,Static routing,RIP
D. Direct routing,RIP,Static routing,OSPF

Explanation

Question 61 of 158

Neither the Alternate interface nor the Backup port in RSTP can forward user traffic, nor can they receive, process, and forward BPDUs.

Select one or more of the following:

A. FALSE
B. TRUE

Explanation

Question 62 of 158

All ports on the root bridge switch are designated ports.

Select one or more of the following:

A. TRUE
B. FALSE

Explanation

Question 63 of 158

A device has been configured to complete the Telnet configuration. The device login address is
10.1.1.10. The Telnet user name is admin and the password is Huawei@123. Which of the following is the correct way to log in to this device using telnetlib?

Select one or more of the following:

A. telnetlib.Telnet （10.1.1.0 )
B. telnetlib.Telnet （10.1.1.0,23,admin,Huawei@123 )
C. telnetlib.Telnet （10.1.1.0,23, Huawei@123 )
D. telnetlib.Telnet （10.1.1.0,admin )

Explanation

Question 64 of 158

When AP and AC are on different Layer 3 networks, what method is recommended for AP to discover AC? (Multiple Choice)

Select one or more of the following:

A. DHCP
B. Broadcasting method
C. Manually specified on AP
D. DNS

Explanation

Question 65 of 158

How many types of data flows with different service levels can be marked based on MPLS labels?

Select one or more of the following:

A. 16
B. 8
C. 4
D. 2

Explanation

Question 66 of 158

Which of the following statement about Python is incorrect?

Select one or more of the following:

A. Has a rich third-party library
B. Is a fully open source high-level programming language
C. can be used for operation and maintenance of automation scripts, Artificial Intelligence, Data science and many other fields
D. Have a clear grammatical structure, simple and easy to learn, colleagues run efficiently

Explanation

Question 67 of 158

The second layer ACL can match the source MAC, destination MAC, source IP, destination IP and other information.

Select one or more of the following:

A. TRUE
B. FALSE

Explanation

Question 68 of 158

What are the roles of OSPF protocol DR and BDR? (Multiple choice)

Select one or more of the following:

A. Reduce the time to establish adjacency
B. Reduce the number of exchanges of link state information.
C. Reduce the types of OSPF protocol packets
D. Reduce the number of adjacencies

Explanation

Question 69 of 158

Which of the following statement about the transport layer protocol is correct? (Multiple choice)

Select one or more of the following:

A. The range of well-known port numbers is 0-1023
B. UDP is suitable for the transmission of delay-sensitive traffic, and can be reorganized according to the sequence number field in the message header
C. TCP establish a connection is a three-way handshake process, TCP terminates the connection will have to go through four-way handshake
D. UDP uses the STNOACK flag to request and confirm the establishment of a connection

Explanation

Question 70 of 158

Which extension headers are supported by IPv6 packets? (Multiple choice)

Select one or more of the following:

A. VLAN extension header
B. Fragmentation extension header
C. Hop-by-hop option extension header
D. Destination option extension header

Explanation

Question 71 of 158

Network shown below, Host A does not configure the gateway, the host B exists gateway ARP cache, which of the following statements are correct? (Multiple choice)

Select one or more of the following:

A. Enable ARP proxy on the GO/0/1 port of the router, then host A can communicate with host B
B. The data packet sent by host B with the destination IP address of 10.0.12.1 can be forwarded to host A
C. Host A and Host B cannot communicate in both directions
D. The data packet sent by host A with the destination IP address of 11.0.12.1 can be forwarded to host B

Explanation

Question 72 of 158

If the value of the Type/Length field of an Ethernet data frame is 0 x 0800, the length of the upper layer message header carried by this data frame is in the range of 20-60B.

Select one or more of the following:

A. TRUE
B. FALSE

Explanation

Question 73 of 158

What is the priority value of the direct route entry?

Select one or more of the following:

A. 20
B. 10
C. 0
D. 30

Explanation

Question 74 of 158

Broadly speaking, which of the following does the transmission medium that constitutes the wireless local area network wlan not include?

Select one or more of the following:

A. Radio waves
B. Ray
C. Laser
D. Infrared

Explanation

Question 75 of 158

<huawei>system-view
[huawei]command-privilege level 3 view user save
The correct statement about the above configuration command is:

Select one or more of the following:

A. Modify the permission level of the save command in the user view to 3
B. Modify the permission level of the user view command to 3, and save the configuration
C. Modify the user's authority level to 3, and save the configuration
D. Modify the authority level of the save command used by a user to 3

Explanation

Question 76 of 158

The router running the OSPF protocol can reach the FULL state after completing the LSDB synchronization.

Select one or more of the following:

A. TRUE
B. FALSE

Explanation

Question 77 of 158

What is the data link layer MAC address of each VAP on the AP?

Select one or more of the following:

A. BSSID
B. BSS
C. SSID
D. ESS

Explanation

Question 78 of 158

The output information of a certain device is shown in the figure. Which of the following statements is correct? (Multiple Choice)
<Huawe1>display interface G1gabitEthernet 0/0/0
G1gabi tEthernet0/0/0 current state : UP
Line protocol current state : UP
Route Port, The Maximum Transmit Unit is 1000 Internet Address is 10.0.12.2/2 4
IP Sending Frames' Format is PRTFMT ETENT_2.Hardware address is 00e0- fc22- 4fff Port Mode: FORCE COPPER
Speed : 100.Loopback: NONE Duplex: FULL,Negotiation: DISABLE Md1 : AUTO
Last 300 seconds input rate 24 bits/sec, 0 packets/sec
Last 300 seconds output rate 24 bits/sec, 0 packets/sec

Select one or more of the following:

A. The IP address of the interface is 10.0.12.2/24
B. The MTU value of this interface is 1000
C. The working rate of this interface is 1Gbps
D. The MAC address of the interface is 00e0-fc22-4fff

Explanation

Question 79 of 158

What elements can NAPT convert?

Select one or more of the following:

A. IP address + port number
B. Only MAC address
C. Only IP address
D. MAC address + port number

Explanation

Question 80 of 158

What is the full name of the general routing platform VRP?

Select one or more of the following:

A. Versatile Routing Platform
B. Versatile Redundancy Platform
C. Virtual Routing Platform
D. Versatile Routing Protocol

Explanation

Question 81 of 158

As shown in the figure below, router A has Telnet router B through IP address 10.0.12.2. In the current interface, which of the following operations will cause the Telnet session of Router A and Router B to be interrupted? (Multiple Choice)

Select one or more of the following:

A. Enable 0SPF protocol under G0/0/1 interface
B. Close G0/0/1 interface
C. Configure static routing
D. Modify the IP address of G0/0/1 interface

Explanation

Question 82 of 158

Regarding the corresponding relationship between the access control list number and type, which of the following description is correct?

Select one or more of the following:

A. The number range of interface-based access control list is 1000-2000
B. The range of advanced access control list numbers is 3000-4000
C. The basic access control list number range is 1000-2999
D. The access control list number range of the second layer is 4000-4999

Explanation

Question 83 of 158

The network devices running the SNMP protocol are running locally-an agent process

Select one or more of the following:

A. TRUE
B. FALSE

Explanation

Question 84 of 158

Which of the following advantages does the router-on-a-stick approach achieve routing intercommunication between VLANs?

Select one or more of the following:

A. Reduce the use of IP addresses
B. Reduce the number of equipment
C. Reduce the number of chain connections
D. Reduce routing table entries

Explanation

Question 85 of 158

On Huawei ARG3 series routers, what authentication modes does AAA support? (Multiple Choice)

Select one or more of the following:

A. 802.1x
B. HWTACACS
C. None
D. Local

Explanation

Question 86 of 158

VRP operating system commands are divided into 4 levels: access level, Monitoring level, Configuration level, and Management level. Which level can run various business configuration commands but cannot operate the file system?

Select one or more of the following:

A. Management level
B. Access level
C. Configuration level
D. Monitoring level

Explanation

Question 87 of 158

What is the value of TPID defined by IEEE802.1Q?

Select one or more of the following:

A. 0x9100
B. 0x8200
C. 0x7200
0x8100

Explanation

Question 88 of 158

Among the following commands to configure the default route, which one is correct?

Select one or more of the following:

A. [Huawei] ip route-static 0.0.0.0 0.0.0.0 192.168.1.1
B. [Huawei-Seria10] ip route-static 0.0.0.0 0.0.0.0 0.0.0.0
C. [Huawei] ip route-static 0.0.0.0 0.0.0.0 0.0.0.0
D. [Huawei] ip route-static 0.0.0.0 255.255.255.255 192.168.1.1

Explanation

Question 89 of 158

The management of users by NAS devices is based on domains. Each user belongs to a domain, and a domain is a group of users who belong to the same domain.

Select one or more of the following:

A. TRUE
B. FALSE

Explanation

Question 90 of 158

Which fields in the IPv4 header are related to fragmentation? (Multiple Choice)

Select one or more of the following:

A. Fragment Offset
B. Flags
C. TTL
D. Identification

Explanation

Question 91 of 158

How many types of OSPF messages are there?

Select one or more of the following:

A. 3
B. 4
C. 2
D. 5

Explanation

Question 92 of 158

Which of the following descriptions about the switch is wrong?

Select one or more of the following:

A. The switch can provide network access services for terminal equipment (PC. Server)
B. Switches generally work at the data link layer
C. Switches are generally used as network export equipment
D. The switch can complete the exchange of data frames

Explanation

Question 93 of 158

On the VRP platform, which of the following methods can be used to access the previous history commands?

Select one or more of the following:

A. Ctr1+P
B. Ctr1+U
C. Up cursor
D. Left cursor

Explanation

Question 94 of 158

What is the range of VLAN ID that users can use?

Select one or more of the following:

A. 1-4096
B. 0-4096
C. 0-4095
D. 1-4094

Explanation

Question 95 of 158

The subnet mask of a network segment 150.25.0.O is 255.255.224.0, then what is a valid host address in the network segment?

Select one or more of the following:

A. 150.15.3.30
B. 150.25.1.255
C. 150.25.2.24
D. 150.25.0.0

Explanation

Question 96 of 158

The network management system can only view the operating status of the device through the SNMP protocol, but cannot issue configurations.

Select one or more of the following:

A. TRUE
B. FALSE

Explanation

Question 97 of 158

Which of the following statements about Prefix Segment is wrong?

Select one or more of the following:

A. Prefix Segment can be automatically allocated by IGP
B. Prefix Segment spreads to other network elements through the IGP protocol, which is globally visible and effective
C. Prefix Segment is used to identify a destination address prefix in the network (Prefix)
D. Prefix Segment needs to be configured manually

Explanation

Question 98 of 158

The switch receives a unicast data frame. If the destination MAC of the data frame can be found in the MAC table, the data frame will be forwarded from the corresponding MAC port.

Select one or more of the following:

A. TRUE
B. FALSE

Explanation

Question 99 of 158

As shown in the figure, the two switches use the default parameters to run STP, the configuration command STP root primary is used on switch A, and the configuration command STP priority 0 is used on switch B.
Then which port will be blocked?

Select one or more of the following:

A. HUB's G0/0/3
B. G0/0/2 of switch A
C. G0/0/1 of switch A
D. G0/0/1 of switch B

Explanation

Question 100 of 158

There is no channel overlap in the 14 available frequency bands in the 2.4GHz frequency band.

Select one or more of the following:

A. TRUE
B. FALSE

Explanation

Question 101 of 158

What is the length of the Ethernet_II frame containing the Ethernet header?

Select one or more of the following:

A. 64-1500B
B. 60-1560B
C. 64-1518B
D. 46-1500B

Explanation

Question 102 of 158

How to add AP on AC? (Multiple Choice)

Select one or more of the following:

A. Manually confirm APs in the uncertified list
B. Automatically discover AP
C. Add online
D. Import AP offline

Explanation

Question 103 of 158

In the configuration BPDU sent by the switch, which bridge ID is unlikely to appear?

Select one or more of the following:

A. 2048 00-01-02-03-04-CC
B. 8192 00-01-02-03-04-CC
C. 0 00-01-02-03-04-CC
D. 4096 00-01-02-03-04-CC

Explanation

Question 104 of 158

As shown in the following figure, router A and router B establish an OSPF neighbor relationship. The OSPF process number of router A is 1, and the area number is 0. Which of the following configurations on router A can enable router B to obtain the network segment of host A routing? (Multiple choice)

Select one or more of the following:

A. ospf 1 Area 0.0.0.0 Network 192.168.1.2 0.0.0.0
ospf 1 Area 0.0.0.0 Network 192.168.1.0 0.0.0.255
ospf 1 Import-route direct
ospf 1 Area 0.0.0.0 Network 192.168.0.0 0.0.255.255

Explanation

Question 105 of 158

AC uses CAPWAP control tunnel to transmit management messages to FIT AP.

Select one or more of the following:

A. TRUE
B. FALSE

Explanation

Question 106 of 158

Which of the following statements about IPv6 multicast addresses are correct? (Multiple Choice)

Select one or more of the following:

A. Provide redundant functions for services
B. The packet whose destination address is a multicast address will be sent to the nearest network interface in the sense of routing
C. Multicast addresses and unicast addresses use the same address space
D. Realize load sharing of services

Explanation

Question 107 of 158

Which of the following description of static and dynamic routing is wrong?

Select one or more of the following:

A. After the link fails, the static route can automatically complete the network convergence.
B. Dynamic routing protocols take up more system resources than static routing protocols.
C. Static routing is simple to configure and easy to manage when applied in the enterprise
D. After the administrator deploys the dynamic routing protocol in the corporate network, later maintenance and expansion can be more convenient

Explanation

Question 108 of 158

VRP supports OSPF multi-process. If the process number is not specified when 0SPF is enabled, the process number used by default is ().

Select one or more of the following:

A. 0
B. 1
C. 100
D. 10

Explanation

Question 109 of 158

What kind of message does the DHCP server use to confirm that the host can use the IP address?

Select one or more of the following:

A. DHCP OFFER
B. DHCP ACK
C. DHCP DISCOVER
D. DHCP REQUEST

Explanation

Question 110 of 158

RADIUS is a common protocol to implement AAA.

Select one or more of the following:

A. TRUE
B. FALSE

Explanation

Question 111 of 158

The information shown in the figure is the port status information displayed on a switch running STP. According to this information, which of the following description is wrong?

Select one or more of the following:

A. This switch may be connected to six other switches
B. This switch is the root switch in the network
C. The priority of this switch is 0
D. This network may only contain this switch

Explanation

Question 112 of 158

The following two configuration commands can realize the router RTA to the same destination
10.1.1.0 routing master and backup backup.
【 RTA 】 ip route-static 10.1.1.0 24 12.1.1.1 permanent
【 RTA 】 ip route-static 10.2.2.0 24 13.1.1.1

Select one or more of the following:

A. TRUE
B. FALSE

Explanation

Question 113 of 158

Which of the following description about the Layer 2 Ethernet switch is incorrect?

Select one or more of the following:

A. Able to learn MAC address
B. It is necessary to make certain modifications to the layer 3 header of the forwarded message, and then forward it
C. Forward according to the Layer 2 header information of the Ethernet frame
D. Layer 2 Ethernet switches work at the data link layer

Explanation

Question 114 of 158

Which of the following descriptions about Trunk port and Access port is correct?

Select one or more of the following:

A. Trunk port can only send tagged frames
B. Trunk port can only send untagged frames
C. Access port can only send tagged frames
D. Access port can only send untagged frames

Explanation

Question 115 of 158

What frequency does IEEE 802.11n support? (Multiple Choice)

Select one or more of the following:

A. 2.5GHz
B. 5GHz
C. 2.4GHz
D. 6GHz

Explanation

Question 116 of 158

The administrator plans to implement route backup by configuring static floating routes, what is the correct way to achieve this?

Select one or more of the following:

A. The administrator needs to configure different protocol priority values for the main static route and the standby static route
B. The administrator needs to configure different metric values for the main static route and the standby static route
C. The administrator needs to configure different TAGs for the main static route and the standby static route
D. The administrator only needs to configure two static routes

Explanation

Question 117 of 158

The wireless access controller (AC, Access Controller) is the unified management and control device in the FIT AP architecture. Which of the following description of the role of AC is wrong?

Select one or more of the following:

A. AP configuration delivery
B. No matter when the data is forwarded, the user's data message will be forwarded by AC
C. User access control
D. User access authentication

Explanation

Question 118 of 158

As shown in the figure, there is a web server in the private network that needs to provide HTTP services to public network users. Therefore, the network administrator needs to configure NAT on the gateway router RTA to achieve the requirements. Which of the following configuration can meet the requirement?

Select one or more of the following:

A. [RTA-Gigabitethernet0/0/1]nat server protocol tcp global 202.10.10.1 www inside 192.168.1.1 8080
B. RTA-Gigabitethernet0/0/1] nat server protocol tcp global 192.168.1.1 www inside 202.10.10.1 8080
C. [RTA-Serial1/0/1] nat server protocol tcp global 202.10.10.1 www inside 192.168.1.1 8080
D. [RTA-Seria11/0/1 ]nat server protocol tcp global 192.168.1.1 www inside 202.10.10.1 8080

Explanation

Question 119 of 158

The Backup ports in RSTP may alternatively failed root port.

Select one or more of the following:

A. TRUE
B. FALSE

Explanation

Question 120 of 158

A company has 50 private IP addresses. The administrator uses NAT technology to connect the company's network to the public network, but the company has only one public network address and is not fixed. Which of the following NAT conversion methods meets the needs?

Select one or more of the following:

A. easy-ip
B. Static NAT
C. NAPT
D. Basic NAT

Explanation

Question 121 of 158

As shown in the figure, if host A has the ARP cache of host B, host A can ping host B.

Select one or more of the following:

A. TRUE
B. FALSE

Explanation

Question 122 of 158

Before the STA associates with the AP, it needs to exchange some messages to obtain the SSID. What are these messages?

Select one or more of the following:

A. ResponseProbe Request
B. Probe
C. Discovery
D. Beacon

Explanation

Question 123 of 158

Which of the following commands can be used to view the router's CPU usage?

Select one or more of the following:

A. display cpu-state
B. display interface
C. display cpu-usage
D. display memory

Explanation

Question 124 of 158

In order to join the wireless network STA needs to obtain wireless network information first. Which of the following messages is used by the STA to actively obtain the SSID information?

Select one or more of the following:

A. Beacon
B. Probe
C. Discovery
D. Join

Explanation

Question 125 of 158

What is the total length of the IPv6 address in bits?

Select one or more of the following:

A. 64
B. 96
C. 128
D. 32

Explanation

Question 126 of 158

Which of the following statements about direct routing is correct?

Select one or more of the following:

A. Direct routing requires the administrator to manually configure the destination network and the next-hop address
B. Direct routing has the highest priority
C. Direct route priority is lower than dynamic route
D. Direct route has lower priority than static route

Explanation

Question 127 of 158

What address does 192.168.1.127/25 represent?

Select one or more of the following:

A. Multicast
B. Host
C. Broadcast
D. Network

Explanation

Question 128 of 158

The controller is the core component of SDN. The controller connects to the device through the southbound interface. Which of the following belong to the controller southbound protocol? (Multiple Choice)

Select one or more of the following:

A. PCEP
B. OpenFlow
C. SNMP
D. NETCONF

Explanation

Question 129 of 158

The administrator wants to configure a hundred IP address on the G0/0/0 interface of the router, then which of the following addresses is correct?

Select one or more of the following:

A. 237.6.1.2/24
B. 192.168.10.112/30
C. 127.3.1.4/28
D. 145.4.2.55/26

Explanation

Question 130 of 158

The tree network topology is actually a hierarchical star structure, which is easy to expand the network scale, but the higher the level, the more serious the network problem caused by the node failure.

Select one or more of the following:

A. TRUE
B. FALSE

Explanation

Question 131 of 158

What kind of message does the OSPF protocol use to send LSA to neighbors?

Select one or more of the following:

A. LSA
B. LSACK
C. LSU
D. LSR

Explanation

Question 132 of 158

If the Length/Type of an Ethernet data frame = 0x8100, which of the following statements is correct?

Select one or more of the following:

A. There must be an IP header in the upper layer of this data frame
B. This data frame must carry VLAN TAG
C. There must be a TCP header in the upper layer of this data frame
D. There must be a UDP header in the upper layer of this data frame

Explanation

Question 133 of 158

In the VRP interface, use the command startup saved-configuration backup.cfg to configure the startup.cfg file for the next startup.

Select one or more of the following:

A. TRUE
B. FALSE

Explanation

Question 134 of 158

In the STP protocol, which of the following factors will affect the election of the root switch? (Multiple choice)

Select one or more of the following:

A. Switch priority
B. Switch interface ID
C. The IP address of the switch
E. MAC address of the switch

Explanation

Question 135 of 158

The two switches shown below have both enabled the STP protocol. An engineer made the following conclusions on this network. Which conclusions do you think are correct? (Multiple choice)

Select one or more of the following:

A. Both ports of SWB are designated ports
B. G0/0/2 port of SWB is stable in Forwarding state
C. Both ports of SWA are designated ports
D. The G0/0/2 port of SWA is stable in Forwarding state
E. The G0/0/3 port of SWA is stable in Forwarding state

Explanation

Question 136 of 158

Through SR (Segment Routing), an explicit path can be easily defined. The nodes in the network only need to maintain the SegmentRouting information to cope with the real-time rapid development of the business. What are the following characteristics of Segment Routing? (Multiple choice)

Select one or more of the following:

A. Adopting source routing technology to provide the ability to quickly exchange text between the network and upper-layer applications
B. SR (Segment Routing) adopts IP forwarding, no additional maintenance is required for another label forwarding table
C. By extending the existing protocol (eg IGP), the existing network can better and smoothly evolve
D. Support the centralized control mode of the controller and the distributed control mode of the transponder at the same time, and provide a balance between centralized control and distributed control

Explanation

Question 137 of 158

Static NAT can only achieve one-to-one mapping between private addresses and public addresses.

Select one or more of the following:

A. TRUE
B. FALSE

Explanation

Question 138 of 158

What is the Solicited-node multicast address corresponding to IPv6 address 2019:: 8:AB?

Select one or more of the following:

A. FF02 :: 1 :: FF20 : 19
B. FF02 :: 1 :: FE08 : AB
C. FF02 :: 1 :: FF08 : AB
D. FF02 :: FF08 : AB

Explanation

Question 139 of 158

The tracert diagnostic tool in Huawei routers is used to track the data forwarding path.

Select one or more of the following:

A. TRUE
B. FALSE

Explanation

Question 140 of 158

Which of the following statements about IPv6 address configuration are correct? (Multiple Choice)

Select one or more of the following:

A. IPv6 address supports automatic configuration in multiple ways
B. IPv6 address can only be configured manually
C. IPv6 supports DHCPv6 for address configuration
D. IPv6 supports stateless automatic configuration

Explanation

Question 141 of 158

The network administrator configures the Huawei router RTA as shown in the figure. If a user needs to be authenticated in the authentication domain "huawei", the correct description below is ().
[RTA]aaa
[RTA-aaa] domain Huawei
RTA-aaa-domain-huawei] authentication-s cheme aul [RTA-aaa-domain-huawei] authentication-scheme au2

Select one or more of the following:

A. Will use "au2" authentication and will use "authentication-scheme au1" authentication
B. "authentication-scheme aul" authentication will be used, if "au1" is deleted, "au2" authentication will be used
C. Will use "authentication-scheme au2" authentication
D. "authentication-scheme au2" authentication will be used, if "au2" is registered, "aul" authentication will be used

Explanation

Question 142 of 158

What are the network types supported by the OSPF protocol? (Multiple Choice)

Select one or more of the following:

A. Broadcast
B. Point-to-Point
C. Point-to-Multipoint
D. Non-Broadcast Multi-Access

Explanation

Question 143 of 158

As shown in the figure, the correct description of this network topology is ().

Select one or more of the following:

A. There are 2 broadcast domains in this network
B. There are 6 broadcast domains in this network
C. There are 6 collision domains in this network
D. There are 12 conflict domains in this network

Explanation

Question 144 of 158

The following statements about the election of active ports in link aggregation LACP mode. Which is correct?

Select one or more of the following:

A. Compare the priority of the interface first, and it is impossible to determine the better one to continue to compare the interface number, the smaller the better.
B. Only compare interface numbers
C. Compare device priority
D. Only compare interface priority

Explanation

Question 145 of 158

Which of the following OSPF protocol packets can ensure the reliability of LSA updates?

Select one or more of the following:

A. LSR
B. DD
C. LSACK
D. LSU

Explanation

Question 146 of 158

An existing switch is connected to a designated port through a port, but the port does not forward any packets, but can monitor network changes by receiving BPDUs, then what is the role of the port?

Select one or more of the following:

A. Alternate port
B. Designated port
C. Root port
D. Disable port

Explanation

Question 147 of 158

In the network shown in the figure below, two switches are connected by four links, COPPER refers to electrical interface, and FIBER refers to optical interface. Which of the following two interfaces can achieve link aggregation?

Select one or more of the following:

A. G0/0/3 and FE0/0/3
B. G0/0/3 and G0/0/1
C. G0/0/2 and FE0/0/3
D. G0/0/2 and G0/0/1

Explanation

Question 148 of 158

Which of the following levels is not a common network level in mid-sized campus network architecture?

Select one or more of the following:

A. Access layer
B. Network layer
C. Core layer
D. Convergence layer

Explanation

Question 149 of 158

Which of the following information prompts will the VRP operating platform use for incomplete input commands?

Select one or more of the following:

A. Error :Incomplete command found at' position
B. Error: Wrong parameter found at 'position
C. Error: Too many parameters found at' position
D. Error :Ambiguous command found at' position

Explanation

Question 150 of 158

The administrator cannot log in to the Huawei router through Telnet, but other administrators can log in normally, so which of the following are the possible reasons? (Multiple Choice)

Select one or more of the following:

A. The Telnet service of the AR2200 router has been disabled
B. The administrator user account has been deleted
C. The administrator user account has been disabled
D. The authority level of the administrator user account has been modified to 0

Explanation

Question 151 of 158

Which of the following parameters cannot be used in the advanced visit control list?

Select one or more of the following:

A. Physical interface
B. Destination port number
C. Time range
D. Protocol number

Explanation

Question 152 of 158

The function of 0SPF hello message is (). (Multiple Choice)

Select one or more of the following:

A. Update LSA information
B. Neighbor discovery
C. Synchronize the LSDB of the router
D. Maintain neighbor relations

Explanation

Question 153 of 158

NAPT distinguishes the IP addresses of different users through the protocol numbers in TCP, UDP, or IP packets

Select one or more of the following:

A. TRUE
B. FALSE

Explanation

Question 154 of 158

What is the IEEE802.11 standard corresponding to Wi-Fi6?

Select one or more of the following:

A. 802.11at
B. 802.11ac
C. 802.11au
D. 802.11ax

Explanation

Question 155 of 158

The basic header length of IPv6 packets is a fixed value.

Select one or more of the following:

A. TRUE
B. FALSE

Explanation

Question 156 of 158

In the VRP interface, use the command delete vrpcfg.zip to delete the file. You must empty the recycle bin to completely delete the file.

Select one or more of the following:

A. TRUE
B. FALSE

Explanation

Question 157 of 158

In which of the following network types does the OSPF protocol need to elect DR and BDR? (Multiple choice)

Select one or more of the following:

A. Point to multipoint
B. Point-to-point type
C. NBMA
D. Broadcast type

Explanation

Question 158 of 158

As shown in the figure below, the MAC address table of SWA is as follows. The switch can't learn the MAC address of HOST A all the time. Which of the following is impossible?

Select one or more of the following:

A. The G0/0/1 port of the switch is set to ACCESS mode
B. The G0/0/1 port of the switch has disabled MAC address learning
C. HOST A did not send any data frames
D. SWA turns off the MAC address learning function of the VLAN to which host A belongs

Explanation

Check answer

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	Created by azarias beltre over 2 years ago

PARA PRACTICA

Examen de Practica Certificicacion HCIA-21-811

Question 1 of 158

In the campus network planning, which of the following ways can business VLAN be divided?

Select one or more of the following:

Explanation

Question 2 of 158

By default, the bridge priority of Huawei switches is 32768.

Select one or more of the following:

Explanation

Question 3 of 158

What is the total length of the VLAN frame format defined by IEEE802.1Q?

Select one or more of the following:

Explanation

Question 4 of 158

As shown in the figure, if host A and host B want to achieve inter-VLAN communication through single-arm routing, which configuration should be done under the G0/0/1.1 interface of RTA?

Select one or more of the following:

Explanation

Question 5 of 158

The DHCPv6 server supports providing other configuration information such as DNS server address for the host

Select one or more of the following:

Explanation

Question 6 of 158

In the network shown in the figure below, the bridge ID of the switch has been marked. Enter the command stp root secondary on the SWD switch, and which of the following switch will become the root bridge of this network?

Select one or more of the following:

Explanation

Question 7 of 158

PPPoE session can only use CHAP authentication

Select one or more of the following:

Explanation

Question 8 of 158

The router Radius information configuration is shown in the figure. Which of the following statement is correct? (Multiple Choice)

Select one or more of the following:

Explanation

Question 9 of 158

Which version of the SNMP protocol below supports encryption features?

Select one or more of the following:

Explanation

Question 10 of 158

The Layer 2 switch is a data link layer device, which can identify the MAC address information in the data frame, forward data according to the MAC address, and record these MAC addresses and corresponding port information in its own MAC address table.

Select one or more of the following:

Explanation

Question 11 of 158

After the system restarts the static MAC address table, the saved entries will not be lost.

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Explanation

Question 12 of 158

In the network shown in the figure below, all links are Ethernet links, and all interfaces of all routers run OSPF protocol, how many DRs are elected in the entire network?

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Explanation

Question 13 of 158

On the broadcast network, both DR and BDR use the multicast address 224.0.0.6 to receive link state update messages

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Explanation

Question 14 of 158

Which of the following statement about the TTL field in the IP packet header is correct?

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Explanation

Question 15 of 158

In the network shown in the figure, the administrator hopes that all hosts cannot access the web service (the port number is 80), and other services are normally accessed, so in the interface configuration of G0/0/1, traffic-filtar outbound needs to define which ACL rule?

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Explanation

Question 16 of 158

If the Ethernet data frame Length/Type=0X0806, which of the following statement is correct? (Multiple choice)

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Explanation

Question 17 of 158

In the network shown in the figure below, all routers run OSPF protocol, which device is ABR? (Multiple choice)

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Explanation

Question 18 of 158

As shown in the figure below, which of the following statements are correct?

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Explanation

Question 19 of 158

The number of VLANs that can be created using the commands "vlan batch 10 20" and "vlan batch 10 to 20" respectively is

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Explanation

Question 20 of 158

After the network administrator uses the TracertRoute function on the router device, in the data packet sent by the router, what is the value of the Protoco1 field in the IPv4 header?

The following rules exist in a certain ACL of the router. rule deny tcp source 192.168.1.0
0.0.0.255 destination 172.16.10.1 0.0.0.0 destination-port eq 21 Which statement is correct?