Cisco 640-878 Online Practice Questions and Exam Preparation

Cisco 640-878 Online Questions & Answers

• Question 41:

  What platform is best placed as the edge device within the Cisco Service Provider Next Generation Network architecture running IOS-XE?

  A. ASR 9000
  B. Catalyst 6509
  C. 2921 Router
  D. C3560G
  E. Catalyst 7609
  A. ASR 9000

• Question 42:

  Your switch network has been configured to support multiple VLANs. In order for the users on one VLAN to communicate with users on another VLAN, which additional configuration is required?

  A. Enable a routing protocol like EIGRP on a router or on a Layer 3 capable switch
  B. Enable inter-VLAN routing on a router or on a Layer 3 capable switch
  C. Enable a switch virtual interface on the router, using the interface vlan global configuration command
  D. Enable a switch virtual interface on the switch, using the encapsulation dot1q
  E. subinterface configuration command
  F. Enable IP routing on a Layer 2 switch
  B. Enable inter-VLAN routing on a router or on a Layer 3 capable switch

• Question 43:

  Which three statements about VLAN implementation in a Layer 2 switch environment are true? (Choose three.)

  A. The Cisco IOS switchport access vlan interface configuration command is used to configure the native VLAN on the switch port.
  B. 802.1AD supports VLAN overlap.
  C. VLANs can span across multiple switches.
  D. 802.1Q encapsulation is used to identify different VLANs on a trunk port.
  E. Inter-VLAN routing is performed between VLAN tunnel ports.
  B. 802.1AD supports VLAN overlap.
  C. VLANs can span across multiple switches.
  D. 802.1Q encapsulation is used to identify different VLANs on a trunk port.

• Question 44:

  Refer to the exhibit.

  

  Which three statements about MPLS LDP operations are true?

  A. The incoming label for 10.2.10.1/32 is 16010 (which is allocated by the local router), and the outgoing label is 22 (as advertised by the next-hop router).
  B. The 16003 and 16010 labels are learned from the 192.168.112.40 LDP neighbor.
  C. The ImpNull outgoing label for the 192.168.102.0/24 network means that the outgoing label should be removed when sending packets to the 192.168.112.40 next-hop router, when the incoming label is 16003.
  D. The ImpNull outgoing label for the 192.168.102.0/24 network means that the local router has not received a label for that network from its neighbor.
  E. The Unlabeled outgoing label for 10.10.10.100/32 indicates that a label pop is required when sending packets to the 10.10.10.1 next-hop router.
  F. The outgoing label of 22 for 10.2.10.1/32 is learned from the 192.168.112.40 LDP neighbor.
  A. The incoming label for 10.2.10.1/32 is 16010 (which is allocated by the local router), and the outgoing label is 22 (as advertised by the next-hop router).
  C. The ImpNull outgoing label for the 192.168.102.0/24 network means that the outgoing label should be removed when sending packets to the 192.168.112.40 next-hop router, when the incoming label is 16003.
  F. The outgoing label of 22 for 10.2.10.1/32 is learned from the 192.168.112.40 LDP neighbor.

• Question 45:

  A network administrator is troubleshooting an issue whereupon they able to ping the web server, but unable to web browse to the same web server. When the administrator telnets to the webserver on port 80, the administrator gets a connection refused message. At which three layers of the OSI model does the problem exist? (Choose three.)

  A. Layer 1
  B. Layer 2
  C. Layer 3
  D. Layer 4
  E. Layer 5
  F. Layer 6
  G. Layer 7
  D. Layer 4
  E. Layer 5
  G. Layer 7

• Question 46:

  What is a requirement for performing Cisco IOS ISSU on the Cisco IOS XE-based ASR 1006 and ASR 1013 routers?

  A. must use consolidated package mode
  B. must use subpackage mode
  C. must have redundant RPs
  D. must have owner and nonowner SDRs
  C. must have redundant RPs

• Question 47:

  Refer to the configuration snippet below. A network engineer has been tasked with implementing a security policy that prevents subnet 209.165.202.128/27 from accessing web server 209.165.200.224. All users are now unable to access the web server. What command is missing from the access list configuration?

  Configuration: switch(config)#access-list 1 deny 209.165.202.128 0.0.0.31 209.165.200.224 switch(config)#interface FastEthernet 0/0 switch(config-if)# ip access-group 1 in

  A. switch(config-if)#ip access-group 1 out
  B. switch(config)#ip access-list 2 permit any any
  C. switch#ip access-list 2 permit any any
  D. switch(config)#ip access-list 1 permit any any
  D. switch(config)#ip access-list 1 permit any any

• Question 48:

  Which file extension indicates a bootable installation file in Cisco IOS XR software?

  A. .bin
  B. .tar
  C. .smu
  D. .pie
  E. .vm
  F. .mini
  E. .vm

• Question 49:

  Which procedure is used as the last resort disaster recovery procedure to completely replace the currently installed IOS XR software on Cisco IOS XR routers?

  A. netboot
  B. turboboot
  C. install recovery
  D. install rollback
  E. install add and install activate
  B. turboboot

• Question 50:

  Refer to the partial Cisco IOS router configuration exhibit.

  

  Which type of tunnel configuration is shown?

  A. GRE tunnel
  B. manual 6in4 tunnel
  C. 6to4 automatic tunnel
  D. 6RD
  E. IPv4-in-IPv6 tunnel
  B. manual 6in4 tunnel