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2021 Nov 642-883 free question

Q11. An engineer is using configuration blocks to build policy-based routing. All other traffic must not be affected and the policy must be applied to GigabitEthernet1/0. Which block correctly implements traffic that is destined for 10.10.10.0/24 using a next hop of 192.168.55.1? 

A. access-list 110 permit ip any 10.10.10.0 0.0.0.255 route-map PBR permit 10 match ip address 110 set next-hop 192.168.55.1 interface GigabitEthernet1/0 ip policy route-map PBR 

B. access-list 110 permit ip any 10.10.10.0 0.0.0.255 route-map PBR permit 10 match ip address 110 set next-hop 192.168.55.1 route-map PBR permit 20 interface GigabitEthernet1/0 ip policy route-map PBR 

C. access-list 110 permit ip any 10.10.10.0 255.255.255.0 route-map PBR permit 10 match ip address 110 set next-hop 192.168.55.1 interface GigabitEthernet1/0 ip policy route-map PBR 

D. access-list 110 permit ip any 10.10.10.0 255.255.255.0 route-map PBR permit 10 match ip address 110 set next-hop 192.168.55.1 route-map PBR permit 20 interface GigabitEthernet1/0 ip policy route-map PBR 

Answer: B 


Q12. Refer to the exhibit. 

R1 and XR2 cannot establish OSPF adjacency. Which option is the root cause of this issue? 

A. stub flag mismatch 

B. mismatched passwords 

C. process ID mismatch 

D. mismatched authentication types 

E. MTU mismatch 

Answer: D 


Q13. In Cisco IOS and Cisco IOS XE Software images, when redistributing routes from other routing protocols into OSPF, what is a common reason why some of the routes might not be redistributed into OSPF? 

A. The OSPF external metric type (E1 or E2) is not defined. 

B. The OSPF seed metric is not defined. 

C. The OSPF level (Level 1, Level 2, or Level-1-2) to which the routes will be redistributed into is not defined. 

D. The subnets option in the redistribute command is missing. 

Answer: D 


Q14. 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: A 


Q15. Which two OSPF network scenarios require OSPF virtual link configuration? (Choose two.) 

A. to connect an OSPF non-backbone area to area 0 through another non-backbone area 

B. to connect an NSSA area to an external routing domain 

C. to connect two parts of a partitioned backbone area through a non-backbone area 

D. to enable route leaking from Level 2 into Level 1 

E. to enable route leaking from Level 1 into Level 2 

F. to enable OSPF traffic engineering 

Answer: A,C 


Refresh 642-883 braindumps:

Q16. Which three statements are correct regarding the OSPF operations? line (Choose three.) 

A. PE5 OSPFv2 and OSPFv3 router id is 10.5.1.1 

B. The OSPF virtual-link cost is 1 

C. Area 3 is a transit area 

D. Area 4 is using MD5 authentication 

E. Area 1 IPv4 and IPv6 networks are not reachable from PE6 

Answer: C,D,E 

Explanation: #show ip protocols #show ip route ospf #show ip ospf interfaces #show ip ospf neighbors #show ip ospf database #show ip ospf border-routers #show ip ospf #show ip route 

#show ip protocols 


Q17. When configuring Cisco IOS route maps, which command allows the route map processing to jump to another statement instead of exiting? 

A. jump 

B. next 

C. set 

D. continue 

E. goto 

Answer: D 

Explanation: 

Match Operations With Continue Clauses 

If a match clause does not exist in the route-map entry but a continue clause does, the continue clause will be automatically executed and go to the specified route-map entry. If a match clause exists in a route-map entry, the continue clause is executed only when a successful match occurs. When a successful match occurs and a continue clause exists, the route map executes the set clauses and then goes to the specified route-map entry. If the next route map contains a continue clause, the route map will execute the continue clause if a successful match occurs. If a continue clause does not exist in the next route map, the route map will be evaluated normally. If a continue clause exists in the next route map but a match does not occur, the route map will not continue and will “fall through” to the next sequence number if one exists. 

Set Operations With Continue Clauses 

Set clauses are saved during the match clause evaluation process and executed after the route-map evaluation is completed. The set clauses are evaluated and executed in the order in which they were configured. Set clauses are only executed after a successful match occurs, unless the route map does not contain a match clause. The continue statement proceeds to the specified route-map entry only after configured set actions are performed. If a set action occurs in the first route map and then the same set action occurs again, with a different value, in a subsequent route map entry, the last set action may override any previous set actions that were configured with the same set command unless the set command permits more than one value. For example, the set as-path pretend command permits more than one autonomous system number to be configured. 


Q18. On the PE5 router, there are how many IPv4 and IPv6 OSPF neighbors and how many IPv4 OSPF interfaces? (Choose three) 

A. Two ipv4 ospf neighbors 

B. Three ipv4 ospf neighbors 

C. Two ipv6 ospf neighbors 

D. Three ipv6 ospf neighbors 

E. Three ipv4 ospf interfaces 

F. Four ipv4 ospf interfaces 

Answer: A,E,F 

Explanation: # show ip ospf neighbor # show ipv6 ospf neighbor 


Q19. What is function of the RP/0/RSP0/CPU0:PE1(config-ospf)#distance Cisco IOS-XR command? 

A. To modify the administrative distance of the OSPF routes 

B. To modify the default seed metric of the OSPF external routes 

C. To modify the OSPF default reference bandwidth 

D. To modify the OSPF cost 

Answer: A 

Explanation: 

http://www.cisco.com/en/US/docs/ios_xr_sw/iosxr_r3.8/routing/command/reference/rr38osp f.pdf 

C:Documents and Settingsuser-nwzDesktop1.JPG 


Q20. An engineer is configuring an eBGP peering session. What is the default TTL value? 

A. 1 

B. 64 

C. 127 

D. 255 

Answer: A