Cisco 640-878 Online Practice Questions and Exam Preparation

Cisco 640-878 Online Questions & Answers

• Question 71:

  A customer has created a new VLAN for the subnet that was allocated to them. Computers on the subnets can ping their default gateway, but they cannot ping devices in the other subnet. What is most likely the problem?

  A. Firewall on the Provider Edge is blocking access
  B. InterVLAN routing is not configured
  C. BGP has not been configured with the Provider Edge router
  D. VLAN Switched Virtual Interface is in a down state
  B. InterVLAN routing is not configured

• Question 72:

  Cisco IP NGN service providers can offer multiple services to their customers by using which type of technology in their core networks?

  A. ATM
  B. SONET/SDH
  C. Frame Relay
  D. IP/MPLS
  E. PBB
  D. IP/MPLS

• Question 73:

  What do both Carrier Grade NAT and NAT64 have in common?

  A. both are only used in carrier networks
  B. both are used for tunneling IPv6 in an IPv4 network
  C. both require the use IPv6
  D. both are methods for avoiding IPv4 address exhaustion
  D. both are methods for avoiding IPv4 address exhaustion

• Question 74:

  DRAG DROP

  Select and Place:

  

  

• Question 75:

  DRAG DROP

  Select and Place:

  

  

• Question 76:

  Which IPv6 address block is reserved for 6to4 tunneling?

  A. 2000::/16
  B. 2001::/16
  C. 2002::/16
  D. 3ffe::/16
  E. fe80::/16
  C. 2002::/16

• Question 77:

  You have just enabled IS-IS on the lab testing network. You notice that IS-IS is not using the optimal path selection based on the interface bandwidth. Currently, the IS-IS routing process seems to be selecting the best path based on the hop count.

  What configuration change can you make to cause IS-IS to select the optimal path based on the interface bandwidth?

  A. Enable a wide-style IS-IS metric.
  B. Enable a narrow-style IS-IS metric.
  C. Change the default auto-cost reference bandwidth to a higher value.
  D. Change the default IS-IS metric on each of the router interfaces to better correspond to the interface bandwidth.
  E. Change the interface bandwidth by using the bandwidth interface configuration mode command.
  D. Change the default IS-IS metric on each of the router interfaces to better correspond to the interface bandwidth.

• Question 78:

  Which Cisco IOS-XR command is used to unpack a package on the local router?

  A. install boot
  B. install commit
  C. install add
  D. install package
  C. install add

• Question 79:

  Which statement is true about enabling IS-IS routing and using the net command to configure the NSAP address?

  A. NSAP addresses have a fixed size of 20 bytes.
  B. The NSEL must always be 00 to identify the router.
  C. The area address follows the system ID field before the NSEL field.
  D. An AFI of 39 indicates that the AFI is a locally administered private address.
  B. The NSEL must always be 00 to identify the router.

• Question 80:

  Which statement about Cisco IOS XE software is true?

  A. It uses a two-stage configuration process.
  B. It is identical in look and feel to Cisco IOS software.
  C. It runs on the Cisco ASR 9010 platform.
  D. Packages can be added using the install add and install activate commands.
  E. It runs on the Cisco ME 3400 platform.
  B. It is identical in look and feel to Cisco IOS software.