Cisco 642-902 Online Practice Questions and Exam Preparation

Cisco 642-902 Online Questions & Answers

• Question 321:

  Which statement is true about IPv6?

  A. Only one IPv6 address is assigned per node.
  B. Only one IPv6 address can be assigned to each interface.
  C. Each host can auto configure its address without the aid of a DHCP server.
  D. IPv6 hosts use any cast addresses to assign IP addresses to interfaces.
  C. Each host can auto configure its address without the aid of a DHCP server.

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  Reference: http://www.tcpipguide.com/free/t_DHCPAutoconfigurationAutomaticPrivateIPAddressingA.htm

• Question 322:

  A router is running BGP and receives more than one route for a particular prefix. Assume all the routes for this prefix have the same attributes. Which three path features would be reasons be for the router to ignore some of the routes and not consider them as candidates for the best path? (Choose three.)

  A. paths that are marked as synchronized in the show ip bgp output
  B. paths that are marked as not synchronized in the show ip bgp output
  C. paths for which the NEXT_HOP is accessible
  D. paths for which the NEXT_HOP is inaccessible
  E. paths from an external BGP (eBGP) neighbor if the local autonomous system (AS) appears in the AS_PATH
  F. paths from an internal BGP (iBGP) neighbor if the local autonomous system (AS) appears in the AS_PATH
  B. paths that are marked as not synchronized in the show ip bgp output
  D. paths for which the NEXT_HOP is inaccessible
  E. paths from an external BGP (eBGP) neighbor if the local autonomous system (AS) appears in the AS_PATH

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  Only synchronized routes (answer B) with no AS loops (answer E) and a valid next hop (answer D) will be considered as candidates for the best path route selection decision process.

• Question 323:

  Which three statements about OSPF areas are true? (Choose three.)

  A. Areas introduce a boundary on the link-state updates.
  B. Areas are logical definitions specific to any given router.
  C. All routers within an area have the exact link-state database.
  D. The calculation of the Dijkstra algorithm on a router is limited to changes within an area.
  E. The area designated router will always have a priority of 0.
  A. Areas introduce a boundary on the link-state updates.
  C. All routers within an area have the exact link-state database.
  D. The calculation of the Dijkstra algorithm on a router is limited to changes within an area.

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  Reference:

  http://www.cisco.com/en/US/tech/tk365/technologies_white_paper09186a0080094e9e.shtml (areas and border routers)

• Question 324:

  Refer to the exhibit.

  

  BigBids Incorporated is a worldwide auction provider. The network uses EIGRP as its routing protocol throughout the corporation. The network administrator does not understand the convergence of EIGRP. Using the output of the show ip

  eigrp topology all-links command, answer the administrator's question.

  Which three networks is the router at 172.17.10.2 directly connected to? (Choose three)

  A. 172.17.0.0/30
  B. 172.17.1.0/24
  C. 172.17.2.0/24
  D. 172.17.3.0/25
  E. 172.17.3.128/25
  F. 172.17.10.0/24
  C. 172.17.2.0/24
  E. 172.17.3.128/25
  F. 172.17.10.0/24

  ---

  

  First, we should notice about the entry in the orange box, it shows that the network 172.17.10.0/24 is directly connected with this router and has a FD of 28160. So we can guess the networks that directly connected with router at 172.17.10.2 will be shown with an AD of 28160. From that, we find out 3 networks which are directly connected to the router at 172.17.10.2 (they are green underlined). The network 172.17.10.0/24 is surely directly connected to the router at 172.17.10.2 (in fact it is the network that links the router at 172.17.10.2 with Core1 router).

• Question 325:

  Which of the following is a GRE Tunnel characteristic?

  A. GRE impose more CPU overhead than IPSec on VPN gateways
  B. GRE tunnels can run through IPsec tunnels.
  C. GRE Tunnel doesn't have support for IPv6
  D. GRE consists of two sub-protocols: Encapsulated Security Payload (ESP) and Authentication Header (AH).
  B. GRE tunnels can run through IPsec tunnels.

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  If you run an IPsec tunnel through a GRE tunnel then we call it as "IPsec over GRE"

• Question 326:

  Based on the exhibited output, which three statements are true? (Choose three.)

  

  A. R1 is configured with the variance command.
  B. The route to 10.2.0.0/16 was redistributed into EIGRP.
  C. A default route has been redistributed into the EIGRP autonomous system.
  D. R1 is configured with the ip summary-address command.
  E. The router at 10.1.1.2 is configured with the ip default-network 0.0.0.0 command.
  F. R1 is sourcing an external EIGRP route from Null0.
  A. R1 is configured with the variance command.
  C. A default route has been redistributed into the EIGRP autonomous system.
  D. R1 is configured with the ip summary-address command.

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  From the routing table above, we see that network 172.16.1. can be reached via 2 unequal paths (with FD of 23072000 and 20640000) so surely R1 has been configured with the "variance" command By configuring a default route and redistribute it into EIGRP you will get the line "D *EX 0.0.0.0/0 ..." line in the routing table of that router From the line "10.2.0.0/16 is a summary, 00:16:18, Null0 we know that this network has been summarized with the "ip summaray-address" command (notice that 10.2.0.0 is not the major network of net

• Question 327:

  How is the configuration of a totally stubby area different from that of a stub area?

  A. The totally stubby area requires the no-summary command on the ABR.
  B. The totally stubby area requires the totally stubby command on the ABR.
  C. The no-summary command should be included on all routers within the totally stubby area.
  D. The totally stubby command should be included on all routers within the totally stubby area.
  E. The totally stubby area requires the no-summary command on the ASBR.
  A. The totally stubby area requires the no-summary command on the ABR.

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  Reference: http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080094a74.shtml

• Question 328:

  Refer to the exhibit.

  

  A partial routing configuration is shown. Complete the configuration so that only the default- network is redistributed from EIGRP 190 into EIGRP 212. Which ACL statement completes the configuration correctly?

  A. access-list 100 permit ip 0.0.0.0 0.0.0.0 0.0.0.0 0.0.0.0
  B. access-list 100 permit ip host 0.0.0.0 any
  C. access-list 100 permit ip any host 0.0.0.0
  D. A default-network cannot be redistributed between routing processes.
  C. access-list 100 permit ip any host 0.0.0.0

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  The command "access-list 100 permit ip any host 0.0.0.0 means permit any source address with the destination of 0.0.0.0/0, which is the default route Note: any equals 0.0.0.0 255.255.255.255

  host 0.0.0.0 equals 0.0.0.0 0.0.0.0

• Question 329:

  Refer to the exhibit.

  A new TAC engineer came to you for advice. A GRE over IPsec tunnel was configured, but the tunnel is not coming up.

  What did the TAC engineer configure incorrectly?

  A. The crypto map is not configured correctly.
  B. The crypto ACL is not configured correctly.
  C. The crypto map is not applied to the correct interface.
  D. The OSPF network is not configured correctly.
  B. The crypto ACL is not configured correctly.

• Question 330:

  A network administrator is troubleshooting a redistribution of OSPF routes into EIGRP.

  router eigrp 1 network 10.0.0.0 ! router ospf 1 network 172.10.0.0 0.0.255.255 area 0 redistribute eigrp 1 Given the exhibited commands, which statement is true?

  A. Redistributed routes will have an external type of 1 and a metric of 1.
  B. Redistributed routes will have an external type of 2 and a metric of 20.
  C. Redistributed routes will maintain their original OSPF routing metric.
  D. Redistributed routes will have a default metric of 0 and will be treated as reachable and advertised.
  E. Redistributed routes will have a default metric of 0 but will be treated as unreachable and not advertised.
  B. Redistributed routes will have an external type of 2 and a metric of 20.

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  By default, all routes redistributed into OSPF will be tagged as external type 2 (E2) with a metric of 20, except for BGP routes (with a metric of 1).

  Note: The cost of a type 2 route is always the external cost, irrespective of the interior cost to reach that route. A type 1 cost is the addition of the external cost and the internal cost used to reach that route.