Cisco 642-661 Online Practice Questions and Exam Preparation

Cisco 642-661 Online Questions & Answers

• Question 81:

  Which configuration task requires configuring the bgp cluster-id {cluster-id} command?

  A. configuring hierarchical route reflectors
  B. configuring the BGP confederation ID
  C. configuring hierarchical BGP confederations
  D. configuring the member ASs within a BGP confederation
  E. configuring redundant route reflectors
  F. configuring redundant BGP confederations
  E. configuring redundant route reflectors

• Question 82:

  DRAG DROP

  Select and Place:

  

  

• Question 83:

  What is the range of values from which an ISP can assign a private AS number?

  A. 32768 to 65535
  B. 64512 to 65535
  C. 65101 to 65535
  D. 65001 to 65535
  B. 64512 to 65535

• Question 84:

  BGP table

  Address Prefix AS-Path Next hop Communities Other attr.

  10.0.0.0 /8 65100 65101 1.1.1.1 65101:111 ... ... ... ... ... ... IP routing table Protocol Address Prefix Next-hop Outgoing interface BGP 10.0.0.0 /8 1.1.1.1 OSPF 1.1.1.1 /32 172.16.1.2 Ethernet 0 conn. 172.16.1.0 /24 Ethernet 0 IP routing table Protocol Address Prefix Next-hop Outgoing interface BGP 10.0.0.0 /8 1.1.1.1

  OSPF 1.1.1.1 /32 172.16.1.2 Ethernet 0

  conn. 172.16.1.0 /24 Ethernet 0

  To forward a packet to 10.0.0.0/8, the router perform the following steps:

  Step 1. Search the ip routing table for a route to reach the 10.0.0.0/8 network.

  Step 2. ___________________________

  Step 3. Find the connected outgoing interface to reach 172.16.1.2. Step 4. Arp for the 172.16.1.2 MAC address if it is not already in the ARP cache. Step 5. Store the 172.16.1.2 MAC address in the Fast Switching cache for successive

  packets to network 10.0.0.0.

  What is step 2?

  A. Search the BGP table for an IGP route to reach the BGP next-hop 1.1.1.1.
  B. Search the BGP table for an IBGP route to reach the BGP next-hop 1.1.1.1.
  C. Search the IP routing table for an IGBP route to reach the BGP next-hop 1.1.1.1.
  D. Search the IP routing table for an IGP route to reach the BGP next-hop of 1.1.1.1.
  D. Search the IP routing table for an IGP route to reach the BGP next-hop of 1.1.1.1.

• Question 85:

  SIMULATION

  

  Check the answer below

  You have to add below command to allow update from AS 22

  WGR1> enable WGR1# config t WGR1(config)# ip prefix-list 1 seq 10 permit 0.0.0.0/0 le 32 WGR1(config)# end WGR1# clear ip bgp * WGR1# sh ip bgp summary // verify that the 23 prefix are received WGR1# copy running-config startup-config

• Question 86:

  Which BGP dampening configuration parameter is not configurable by the user?

  A. half-time
  B. reuse-limit
  C. max-suppress
  D. per-flap-penalty
  D. per-flap-penalty

• Question 87:

  When BGP is configured for aggregate addressing, which attribute is set by default unless the asset keyword is specified?

  A. summary-only
  B. atomic aggregate
  C. AS-path
  D. Aggregate route
  B. atomic aggregate

• Question 88:

  Every time a flap occurs on a route, the route receives ________.

  A. 750 per-flap penalty points which are user configurable.
  B. 1500 per-flap penalty points which are user configurable.
  C. 2000 per-flap penalty points which are user configurable.
  D. 1000 per-flap penalty points which are not user configurable.
  D. 1000 per-flap penalty points which are not user configurable.

• Question 89:

  Which BGP path attribute is used to inform the BGP peer that the routing information that was presented in the original routing updates may have been lost when the updates were summarized?

  A. AGGREGATOR
  B. AS_PATH
  C. ATOMIC_AGGREGATE
  D. CLUSTER_LIST
  C. ATOMIC_AGGREGATE

• Question 90:

  You work as a network engineer. You are troubleshooting a BGP neighbor relationship in which the neighbor relationship has gone down. You issue the following command: show ip bgp summary

  You see the string "PfxCt" and Idle appear in the State/PfxRcd field.

  What could be the cause of this issue?

  A. The neighbor has been manually shutdown.
  B. The maximum prefix limit had been set and exceeded.
  C. The interface on the neighbor router is down.
  D. There is a problem with the service provider.
  B. The maximum prefix limit had been set and exceeded.