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Cisco 640-911 Exam

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Quiz on Cisco 640-911 Exam, created by sirhulk1 on 11/01/2014.
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Quiz by sirhulk1, updated more than 1 year ago
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Question 1

Question
Which two networking devices operate at Layer 1 of the OSI Layer (Choose two)
Answer
  • Repeater
  • Bridge
  • Switch
  • Router
  • Hub

Question 2

Question
Which two networking devices forward data based on destination MAC address?
Answer
  • Repeater
  • Bridge
  • Switch
  • Router
  • Hub

Question 3

Question
Which two network topologies are the most popular in switching? (Choose two)
Answer
  • Bus
  • Token Passing Bus
  • Star
  • Extended Star
  • Ring

Question 4

Question
Which device would you select to partition a network into VLANs
Answer
  • Repeater
  • Bridge
  • Switch
  • Router
  • Hub

Question 5

Question
At which layer of the OSI model does TCP operate?
Answer
  • Layer 1
  • Layer 2
  • Layer 3
  • Layer 4
  • Layer 5

Question 6

Question
Which two layers of the OSI model relate to the transmission of bits over the wire and packet forwarding based on destination IP address? (Choose two)
Answer
  • Layer 1
  • Layer 2
  • Layer 3
  • Layer 4
  • Layer 5

Question 7

Question
Which layer of the OSI model is associated with the reliable transmission of datagrams?
Answer
  • Datagram
  • Routing
  • Network
  • Data Link
  • Transport
  • Transmission
  • Session

Question 8

Question
Which three terms are used to describe data at Layers 1, 2, and 4 of the OSI Model?
Answer
  • PDUs
  • Bits
  • Sequences
  • Segments
  • Packets
  • Frames

Question 9

Question
Which two layers of the OSI model are combined in the Internet protocol suite Application Layer? (Choose two)
Answer
  • Layer 2
  • Layer 3
  • Layer 4
  • Layer 5
  • Layer 6

Question 10

Question
In an IEEE 802.3 frame, what is the significance of the DSAP field?
Answer
  • The DSAP field specifies the TCP or UDP port that is associated with the transport protocol.
  • The DSAP field is only used in the United States Department of Defense.
  • The DSAP field is only used in Ethernet II frames.
  • The DSAP field indicates the network layer protocol.

Question 11

Question
Which field in an Ethernet II frame performs the same function as the DSAP field in an 802.3 Ethernet frame?
Answer
  • Start of the frame
  • Ether-type
  • Frame Check Sequence (FCS)
  • Subnetwork Access Protocol
  • Logical Link Control

Question 12

Question
What are two features of a bridge? (Choose two)
Answer
  • Reliable transmission
  • Operate at Layer 2
  • Operate at Layer 3
  • Create multiple broadcast domains
  • Create multiple collision domains
  • Flood input packets to all ports
  • Drop IP packets with invalid destination ports

Question 13

Question
Which two layers of the OSI model are combined in the Internet protocol suite network access layer?
Answer
  • Layer 1
  • Layer 2
  • Layers 3
  • Layer 4
  • Layer 5
  • Layer 6
  • Layer 7

Question 14

Question
What are three reasons that switches supersede bridges? (Choose three)
Answer
  • Smaller frame buffers decrease latency
  • Forward, filter, or flood frames
  • Multiple simultaneous communications between ports
  • Larger inspection engine allows for higher throughput
  • Switches have many ports

Question 15

Question
Which action does a switch take if the destination MAC address is unknown?
Answer
  • Discard frame
  • Send ICMP unreachable message to source
  • Flood packet on all ports
  • Compare destination IP address against an ACL to determine if it is permitted
  • Send gratuitous ARP on all ports and wait for reply before forwarding.

Question 16

Question
Which statement describes the purpose of the MAC address forwarding table of a switch?
Answer
  • The switch consults the forwarding table to determine the best route to a destination.
  • The switch consults the forwarding table to determine the output port.
  • The switch consults the forwarding table to determine if the packet is routable.
  • The switch consults the forwarding table to determine if access control permits the packet.

Question 17

Question
What are two attributes of a VLAN?
Answer
  • A VLAN defines a collision domain.
  • A VLAN defines a broadcast domain.
  • Broadcast are flooded to all VLANs.
  • Collision are flooded to all VLANs.
  • A Layer 3 device is required to route packets between VLANs.
  • A Layer 2 device is required to route packets between VLANs.

Question 18

Question
Which four statements indicate unique properties of VLAN 1 on Cisco Nexus switches? (Choose four)
Answer
  • VLAN 1 is used to flood multicast traffic
  • VLAN 1 cannot be deleted.
  • VLAN 1 is used for Cisco Discovery Protocol.
  • VLAN 1 is used for VTP advertisements.
  • VLAN 1 defines a collision domain.
  • VLAN 1 defines a broadcast domain.

Question 19

Question
Which command displays the Trunking Native Mode VLAN on port Ethernet 1/18?
Answer
  • show running-config switchport e1/18
  • show running-config e1/18 switchport
  • show interface e1/18
  • show interface e1/18 switchport
  • show interface e1/18 native

Question 20

Question
Which VTP mode disallows the creation of local VLANs?
Answer
  • transparent
  • tunneling
  • server
  • client
  • off
  • native

Question 21

Question
Which three statements are true concerning RFC 1918 IP addresses (Choose three)
Answer
  • They are globally routable.
  • They are not globally routable.
  • They must not be filtered at the Internet border interfaces
  • They should be filtered at the internet border interfaces
  • They include 10.0.0.0/8, 172.16.0.0/16, 192.168.1.0/24
  • They include 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16

Question 22

Question
Which two statements describe the purpose of RFC 1918? (Choose two)
Answer
  • Establish a range of IP addresses that are dedicated to the growing use of multicast video.
  • Establish a range if IP addresses that are dedicated to the growing use of peer to peer file-sharing applications.
  • Establish a range of IP addresses that are dedicated to use on internal networks
  • Establish a range of IP addresses to address the shrinking pool of globally routable addresses.

Question 23

Question
What three reasons to migrate from IPv4 to IPv6? (Choose three)
Answer
  • IPv6 eliminates the requirement for NAT
  • IPv6 includes enough IP addresses to allocate more than four billion IP addresses to every person on earth.
  • IPv6 eliminates the need for VLANs
  • Hosts can be assigned an IP address without DHCP
  • Hosts can be assigned an IP address without DNS.

Question 24

Question
Which two options describe services that are provided by TCP? (Choose two)
Answer
  • Session multiplexing
  • Ether Types identify destination services
  • Connection-oriented
  • best-effort packet delivery
  • binary translation.

Question 25

Question
Which two options describe services that are provided by UDP ? (Choose two)
Answer
  • Session multiplexing
  • Segmentation
  • Connection-oriented
  • best-effort packet delivery

Question 26

Question
Which two options represent a subnet mask that allows for a maximum of 14 available host addresses on a subnet? (Choose two)
Answer
  • 255.255.255.240
  • 255.255.255.192
  • 255.255.240.0
  • 255.255.192.0
  • /14
  • /21
  • /26
  • /28

Question 27

Question
What is the binary value of the hexadecimal number 0x511
Answer
  • 10100011001
  • 10101010101
  • 10110010001
  • 10100010001
  • 10100110011

Question 28

Question
What is the binary value of the decimal number 1263
Answer
  • 11011101101
  • 10011101111
  • 10011101011
  • 1101000111
  • 1011110111

Question 29

Question
Which option is an example of an advanced distance vector routing protocol?
Answer
  • EIGRP
  • RIP
  • OSPF
  • ARP

Question 30

Question
Which option is an example of a distance vector routing protocol?
Answer
  • RIP
  • OSPF
  • ARP
  • IS-IS

Question 31

Question
Which option is an example of a link-state protocol
Answer
  • EIGRP
  • RIP
  • OSPF
  • ARP

Question 32

Question
What is the maximum allowable hop count for RIPv1?
Answer
  • 4
  • 8
  • 12
  • 15
  • 16

Question 33

Question
What is the default periodic interval at Ribv1 sends routing updates?
Answer
  • 15 seconds
  • 30 seconds
  • 45 seconds
  • 60 seconds
  • 90 seconds
  • RIPv1 only sends routing updates when the topology changes

Question 34

Question
What does RIPv1 send to its neighbors?
Answer
  • Information about changed routes
  • information about new routes
  • The entire routing table.
  • Information about deleted routes.

Question 35

Question
What are two advantages of employing an external router for inter-vlan routing over an IEEE 802.1Q trunk link? (Choose two)
Answer
  • Layer 3 functionality is not required on the switch
  • The router facilities communication between VLANs.
  • The single traffic path is optimized.
  • Latency is reduced as packets leave the switch.
  • Equal-Cost Multipath is supported.

Question 36

Question
Which statement correctly describes an SVI?
Answer
  • An SVI is a Layer 2 interface and uses a dynamic MAC address.
  • An SVI cannot have an IP address assigned to it.
  • An SVI provides Layer 3 routing between VLANs.
  • Each switch port requires an SVI assignment.

Question 37

Question
What is the Cisco Nexus Operating system command to define a port as a layer 3
Answer
  • switchport
  • no switchport
  • l3 switchport
  • port switching off

Question 38

Question
Which statement is correct regarding a routed port on a multilayer switch?
Answer
  • A routed port requires a SVI definition.
  • Routed ports cannot be configured on a multilayer switch that uses SVIs.
  • A maximum of 32 routed ports can be provisioned on a given multilayer switch.
  • A routed port is a physical port that supports layer 3 routing

Question 39

Question
On a new Cisco Nexus switch, you receive an error message when you attempt to create an SVI. What is the first command you must use to create the SVI?
Answer
  • interface vlan (vlan_id)
  • vlan (vlan_id)
  • feature svi
  • interface routed
  • feature inter-vlan

Question 40

Question
Which command should you use to configure a Cisco Nexus switch certificationort for Layer 2 operation?
Answer
  • nexus(config-if)#switchport
  • network(config-if)# layer-2
  • nexus(config-if)# routed
  • nexus(config-if)#interface-vlan

Question 41

Question
What are two core features of Cisco Nexus Operating system (Choose two)
Answer
  • SNMPv3
  • RMON
  • System Manager
  • PSS
  • VRF
  • TRILL

Question 42

Question
What is the acronym expansion of the UDLD feature of Cisco Nexus Operating System?
Answer
  • UniDirectional Link Detection
  • Unified Data Link Distribution
  • Unified Data Loss Detection
  • Unified Directional Link Distribution
  • Unidirectional Data Loss Detection.

Question 43

Question
What are four security features that are included in Cisco Nexus Operating system
Answer
  • Cisco TrustSec
  • IEEE 802.1Qau
  • CoPP
  • port security
  • PIM
  • SSL VPN
  • IPSec VPN
  • ACLs

Question 44

Question
What are three modular layer 2 processes in Cisco Nexus Operating system?
Answer
  • UDLD
  • PIM
  • HSRP
  • STP
  • Cisco Discovery Protocol (CDP)
  • OSPF

Question 45

Question
What are three modular layer 3 processes in Cisco Nexus Operating system?
Answer
  • UDLD
  • PIM
  • HSRP
  • STP
  • Cisco Discovery Protocol
  • OSPF

Question 46

Question
What are four security features that arae included in Cisco Nexus Operating System?
Answer
  • Cisco TrustSec
  • CoPP
  • ACLs
  • Port Security
  • IPsec VPN

Question 47

Question
What are two default user roles in Cisco Operating System?
Answer
  • admin
  • Network Operator
  • Operator
  • Storage Operator
  • Root
  • System Manager

Question 48

Question
On most keyboards, the up arrow and down arrow keys move through the command history. Which two key sequences can be used as alternative
Answer
  • ALT+A
  • ALT+F
  • ALT+N
  • ALT+E
  • ALT+P

Question 49

Question
What is the function of the Tab key on the Cisco Nexus Operating System command line interface?
Answer
  • Redisplays the current command line.
  • deletes all characters from the cursor to the end of the command line.
  • Clears the terminal screen
  • completes a partially entered command if enough characters are present.
  • moves the cursor one word to the right

Question 50

Question
where does Cisco Nexus Operating system store the running configuration file.
Answer
  • RAM
  • Flash
  • bootflash
  • Volatile
  • NVRAM

Question 51

Question
Where does Cisco Nexus Operating system store the startup configuration file?
Answer
  • RAM
  • flash
  • bootflash
  • volatile
  • NVRAM

Question 52

Question
Which two commands would you use to erase the Cisco Operating System configuration and return the switch to factory defaults?
Answer
  • write erase boot
  • erase configuration
  • erase running--configuration
  • erase startup-configuration
  • reboot
  • reload
  • shutdown

Question 53

Question
What is the minimum required command to enter global configuration mode on a Cisco Nexus switch?
Answer
  • con
  • configure
  • configure global
  • configure terminal

Question 54

Question
Which option would you use to exit the Cisco Nexus Operating System interface configuration mode and return to the exec prompt?
Answer
  • Ctrl-C
  • Ctrl-Z
  • Ctrl-E
  • exit

Question 55

Question
What is the correct format of an access control list on a Cisco Nexus switch to deny unencrypted. Web traffic from any source to destination host 10.10.1.110?
Answer
  • switch(config)# ip access-list 101 switch(config-acl)# deny tcp any host 10.10.1.110 eq 80
  • switch(config)# deny tcp any host 10.10.1.110 eq 80
  • switch(config)# access-list 101 deny tcp any host 10.10.1.110 eq 80 switch(config)# access-list 101 permit ip any any
  • switch(config)# ip access-list 101 switch(config-acl)# deny tcp any host 10.10.1.110 eq 80 switch(config)# access-list 101 permit ip any any

Question 56

Question
What is the correct format of an access control list on a Cisco Nexus switch to deny hosts on the 172.16.1.0/21 network from accessing HTTP proxy servers listening on port 8080?
Answer
  • switch(config)# ip access-list 101 switch(config-acl)# deny tcp 172.16.1.0 0.0.7.255 any eq 8080 switch(config-acl)# permit ip any any
  • switch(config)# ip access-list 101 switch(config-acl)# deny tcp any 172.16.1.0 255.255.248.0 eq 8080 switch(config-acl)# permit ip any any
  • switch(config)# access-list 101 deny tcp 172.16.1.0 0.0.15.255 eq 8080
  • switch(config)# ip access-list 101 switch(config-acl)# deny tcp any host 172.16.1.0/21 eq 8080
  • switch(config)# ip access-list 101 switch(config-acl)# deny tcp any host 10.10.1.110 eq 21 switch(config-acl)# permit ip any any

Question 57

Question
What is the correct format of an access control list on a Cisco Nexus switch to deny hosts on the 172.16.1.0/21 network from accessing HTTP proxy servers listening on port 8080?
Answer
  • switch(config)# ip access-list 101 switch(config-acl)# deny tcp 172.16.1.0 0.0.7.255 any eq 8080 switch(config-acl)# permit ip any any
  • switch(config)# ip access-list 101 switch(config-acl)# deny tcp 172.16.1.255.255.248.0 any eq 8080 switch(config-acl)# permit ip any any
  • switch(config)# access-list 101 deny tcp 172.16.1.0 0.0.15.255 eq 8080
  • switch(conifg)# ip access-list 101 switch(config-acl)# deny tcp any host 172.16.1.0/21 eq 8080

Question 58

Question
What is the correct format of an access control list on a Cisco Nexus switch to only permit unencrypted web traffic from the 172.16.1.0./25 network to destination host 10.10.1.110?
Answer
  • switch(config)# ip access-list 101 switch(config-acl)# permit tcp host 172.16.1.0/25 any eq 80
  • switch(config)# ip access-list 101 switch(config-acl)# permit tcp 172.16.1.0 255.255.255.128 any eq 80
  • switch(config)# ip access-list 101 switch(config-acl)# permit tcp 172.16.1.0/25 any eq 80
  • switch(config)#access-list 101 permit tcp 172.16.1.0/25 0.0.0.128 eq 80
  • switch(conifg)# ip access-list 101 switch(config-acl)# permit tcp any 172.16.1.0 255.255.248.0 eq 80

Question 59

Question
which device forwards data based on the destination IP address?
Answer
  • Repeater
  • bridge
  • switch
  • router
  • hub

Question 60

Question
Which network topology is most closely associated with classical CSMA/CD?
Answer
  • bus
  • token passing bus
  • star
  • Extended star
  • ring

Question 61

Question
Which network topology is most closely associated with FDDI
Answer
  • bus
  • token passing bus
  • star
  • extended star
  • ring

Question 62

Question
Which layer of the OSI model is associated with Token Ring Media Access Control
Answer
  • datagram
  • routing
  • network
  • data link
  • transport
  • transmission
  • session

Question 63

Question
When deploying 10BASE-2 Ethernet which type of connector is used
Answer
  • AUI
  • UTP
  • STP
  • BNC
  • RJ-11
  • RJ-45
  • ST
  • DC

Question 64

Question
When deploying 10BASE-2 Ethernet, what is the maximum cable length?
Answer
  • 100 meters
  • 100 Feet
  • 150 meters
  • 150 feet
  • 185 meters
  • 185 feet

Question 65

Question
How many IP address ranges are specified in RFC 1918
Answer
  • 1 in Class A, 2 in Class B, and 4 in Class C
  • 2 in Class A, 4 in Class B, and 8 in Class C
  • 4 in Class A, 8 in Class B, and 16 in Class C
  • 1 in Class A, 16 in Class B, and 256 in Class C

Question 66

Question
What is required to allow devices that are using RFC 1918 addresses to communicate over the Internet?
Answer
  • A private to public VLAN ust be defined on the Internet border device
  • The Internet firewall must permit RFC 1918 addresses.
  • VLAN translation is required on the Internet border device.
  • Network address translation is required on the Internet border device.

Question 67

Question
What is the addressing format of IPv6?
Answer
  • 48-bit dotted decimal
  • 48-bit colon-delimited hexadecimal
  • 64-bit colon-delimited hexadecimal.
  • 128-bit dotted decimal
  • 128-bit colon-delimited hexadecimal

Question 68

Question
Which statement describes the function of the OSI transport layer?
Answer
  • It segments data from the system of the sending host and reassembles the data into a data stream on the system of the receiving host.
  • It provides the connectivity and path selection between two host systems that may be located on geographically separated networks.
  • It defines how data is formatted for transmission and how access to the physical media is controlled.
  • It establishes, manages, and terminates session between two communicating hosts.

Question 69

Question
Which transport protocol requires a three-way handshake to establish a new connection?
Answer
  • ARP
  • UDP
  • IP
  • TCP

Question 70

Question
What is the subnet mask for the network 172.16.0.0/21?
Answer
  • 255.255.0.0
  • 255.255.255.240
  • 255.255.248.0
  • 255.255.255.248
  • 255.255.248.240
  • 255.255.255.0

Question 71

Question
What is the dotted hexadecimal representation of the IP address 172.13.99.225
Answer
  • AC.0D.63.E1
  • AB.63.99.D5
  • E2.1D.E1.66
  • BC.0C.C3.1F
  • CC.0D.F3.21

Question 72

Question
What is the decimal value of the hexadecimal number of 0x718?
Answer
  • 718
  • 1816
  • 2907
  • 3511
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