642-883 Guide

642-883 Exam Royal Pack (In Stock.)

 
  • Exam Number/Code 642-883
  • Product Name SPROUTE Deploying Cisco Service Provider Network Routing (SPROUTE)
  • Questions and Answers
  • 174 Q&As
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  • Dec 03,2018
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2016 Nov 642-883 free practice test

Q81. A network specialist is working for a large enterprise that has a BGP-enabled multihomed core infrastructure. Recently, the ISP that provides Internet connectivity to the company had to temporarily disable one of the BGP sessions as a result of routers blackholing BGP prefixes in transit. Which option can the specialist use to avoid this incident in the future? 

A. filtering local prefixes outbound 

B. using only one router as primary BGP speaker 

C. permitting only local prefixes outbound 

D. filtering external prefixes inbound 

Answer:


Q82. Refer to the exhibit. 

Area 1 routers must have only a default route in their OSPF routing tables..Which configuration must be completed on XR2 to meet this requirement? 

A. router ospf 1 address-family ipv4 interface GigabitEthernet0/0/0/1 area 1 stub no-summary 

B. router ospf 1 area 1 stub no-summary 

C. router ospf 1 area 1 stub interface GigabitEthernet0/0/0/1 

D. router ospf 1 area 1 stub no-summary interface GigabitEthernet0/0/0/1 

Answer:


Q83. Refer to the exhibit. 

Which configuration on XR2 provides R1 with only the minimum routing information to reach the rest of the network? 

A. Router isis ABC interface GigabitEthernet0/0/0/1 circuit-type level-2-only 

B. Router isis ABC interface GigabitEthernet0/0/0/0 circuit-type level-1-2 

C. Router isis ABC interface GigabitEthernet0/0/0/1 circuit-type level-1 

D. Router isis ABC interface GigabitEthernet0/0/0/0 circuit-type level-1 

Answer:


Q84. Refer to the route policies exhibit. 

Which five route policies will cause the routes to be dropped or passed? (Choose five) 

A. route-policy one will cause the routes to be dropped. 

B. route-policy two will cause the routes to be dropped. 

C. route-policy three will cause the routes to be dropped. 

D. route-policy four will cause the routes to be dropped. 

E. route-policy five will cause the routes to be dropped. 

F. route-policy one will cause the routes to be passed. 

G. route-policy two will cause the routes to be passed. 

H. route-policy three will cause the routes to be passed. 

I. route-policy four will cause the routes to be passed. 

J. route-policy five will cause the routes to be passed. 

Answer: A,C,E,G,I 


Q85. Refer to the Cisco IOS route map configuration exhibit. 

Which two statements are correct? (Choose two.) 

A. The match prefix-list condition is a logical OR: match prefix list PL1 OR PL2. 

B. All match conditions are logical OR: match prefix list PL1 OR PL2 OR match the APACL1 AS path access list. 

C. The three match conditions are logical AND. match prefix list PL1 AND PL2 AND match the APACL1 AS path access list. 

D. The local preference AND the metric will be set to 100 IF the route matches the PL1 OR PL2 prefix list AND the route must also match the APACL1 AS path access list. 

E. All routes that are not matched by the sequence 10 route map statement will be dropped. 

Answer: A,D 

Explanation: 

http://www.routeralley.com/ra/docs/route_maps.pdf 

When match criteria is contained within a single line, a logical OR is applied. 


Replace 642-883 test question:

Q86. When monitoring the OSPF operations in the network, you notice that the OSPF process is not load balancing traffic across multiple OSPF links. Which configuration adjustment could be made to enable the OSPF process to load balance traffic across multiple OSPF links? 

A. Enable BFD on the OSPF interfaces and on the OSPF routing process. 

B. Enable NSR on the OSPF routing process. 

C. Enable NSF on the OSPF routing process. 

D. Adjust the OSPF cost on the OSPF interfaces. 

E. Adjust the OSPF variance parameter. 

F. Use the wide-style OSPF metric instead of the narrow-style OSPF metric. 

Answer:


Q87. An engineer wants to use an address family to configure internal BGP peer 10.1.1.1 as a route reflector client for unicast and multicast prefixes. Which option accomplishes this configuration? 

A. router bgp 140 address-family ipv4 unicast neighbor 10.1.1.1 remote-as 140 address-family ipv4 unicast route-reflector-client exit address-family ipv4 multicast route-reflector-client 

B. router bgp 140 neighbor 10.1.1.1 address-family ipv4 unicast address-family ipv4 multicast remote-as 150 route-reflector-client exit 

C. router bgp 140 address-family ipv4 unicast route-reflector-client address-family ipv4 multicast remote-as 140 neighbor 10.1.1.1 

D. router bgp 140 address-family ipv4 unicast neighbor 10.1.1.1 remote-as 150 address-family ipv4 unicast route-reflector-client exit address-family ipv4 multicast route-reflector-client 

Answer:


Q88. When configuring IPv4 and IPv6 IS-IS routing on Cisco IOS XR routers, which three statements are correct? (Choose three.) 

A. By default, a single SPF is used for both IPv4 and IPv6, so the IPv4 and IPv6 topology should be the same. 

B. By default, the IS-IS router type is Level 1 and Level 2. 

C. All IS-IS routers within the same IS-IS area must be configured with the same IS-IS routing process instance ID. 

D. By default, metric-style narrow is used. 

E. By default, the IS-IS interface circuit type is Level 1 and Level 2. 

F. The area IS-IS address-family configuration command is used to specify the IS-IS area address. 

Answer: B,D,E 

Explanation: 

C:\\Documents and Settings\\user-nwz\\Desktop\\1.JPG 

The default metric style for single topology is narrow metrics. However, you can use either wide metrics or narrow metrics. How to configure them depends upon how single-topology is configured. If both IPv4 and IPv6 are enabled and single-topology is configured, the metric style is configured in the address-family ipv4 stanza. You may configure the metric style in the address-family ipv6 stanza, but it will be ignored in this case. If IPv6 only is enabled and single topology is configured, then the metric style is configured in the address-family ipv6 stanza. 

C:\\Documents and Settings\\user-nwz\\Desktop\\1.JPG 


Q89. Which RPLs can be used to conditionally advertise a default route based on the prefix 

1.1.1.1 being in the routing table? 

A. route-policy RPL_Default_Originate if rib-has-route in (1.1.1.1/32) pass else drop endif end-policy 

B. route-policy RPL_Default_Originate if rib-has-route in (1.1.1.1/32) drop else pass endif end-policy 

C. route-policy RPL_Default_Originate if route in (1.1.1.1/32) pass else drop endif end-policy 

D. route-policy RPL_Default_Originate if not rib-has-route in (1.1.1.1/32) pass else drop endif end-policy 

Answer:


Q90. RAG DROP 

Answer: 


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