how many questions of 642-883 exam dumps?

Q1. A service provider is running BGP with clients at the edge of the network. The service provider sees that routing updates from one site are being dropped when the other site receives them. Which feature.fixes this issue? 

A. EBGP multihop 

B. inter-AS peering 

C. AS-override 

D. allow-AS in 

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Q2. Which two features are specific only to Tier 3 providers? (Choose two.) 

A. interconnects with Tier Level 1 and Tier Level 2 ISPs in public peering points 

B. only purchases transit from other networks to reach the Internet 

C. purchases transit and pays settlements to other service providers 

D. uses strict route filtering to allow only customer and local routes to be sent to upstream providers 

E. receives a full Internet routing table via BGP from its upstream provider, which it can use for load-balancing traffic 

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Q3. Refer to the Cisco IOS show command output shown in the exhibit. 

Which of the following statements is correct? 

A. The best path to 10.2.10.1/32 was chosen because of the AS path. 

B. The best path to 10.2.10.1/32 was chosen because of the weight. 

C. The best path to 10.2.10.1/32 was chosen because of the local preference. 

D. The best path to 10.2.10.1/32 was chosen because of the MED. 

E. The best path to 10.2.10.1/32 was chosen because of the route origin. 

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Q4. Refer to the exhibit. 

Which two configuration options can be used to optimize the IS-IS network scenario? (Choose two.) 

A. Change the R1 and R2 IS type to Level 2. 

B. Change the R1 and R2 IS type to Level 1. 

C. Change the gi0/0 interface IS-IS circuit type on R1 and R2 to Level 2 only. 

D. Change the gi0/1 interface IS-IS circuit type on R1and R2 to Level 1. 

E. Change the IS type for all the routers to Level-1-2. 

F. Change the IS-IS network type for all the routers to point-to-point. 

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Q5. BGP peerings can be secured using which protection mechanism? 

A. SHA authentication 

B. MD5 authentication 

C. SSH 

D. SSL 

E. AAA 

F. digital certificates 

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Q6. 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 

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Q7. When redistributing EIGRP routes into OSPF as type E2 external OSPF routes, what is the default OSPF seed metric? 

A. Infinite 

B. 0 

C. 1 

D. 10 

E. 20 

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Q8. Refer to the exhibit. 

Routers B and C in transit AS 200 are the exit points toward AS 100 and AS 300. Router B is running Cisco IOS XR and Router C IOS XE. Internally, AS 200 runs OPSF only for internal routing. Which two methods can an engineer use to ensure proper reachability between AS 100 and AS 300 for the needed routes? (Choose two.) 

A. Router B: router ospf 200 redistribute bgp 200 tag 20 router bgp 200 address-family ipv4 unicast redistribute ospf 200 metric-type 2 

B. Router B: router ospf 200 redistribute bgp 200 router bgp 200 address-family ipv4 unicast redistribute ospf 200 

C. Router C: router ospf 200 redistribute bgp 200 metric-type 1 subnets tag 200 router bgp 200 address-family ipv4 redistribute ospf 200 

D. Router C: router ospf 200 redistribute bgp 200 metric-type 1 subnets tag 200 router bgp 200 address-family ipv4 redistribute ospf 200 match external 2 

E. Router C: router ospf 200 redistribute bgp 200 metric-type 1 subnets tag 200 router bgp 200 address-family ipv4 redistribute ospf 200 route-map match-tag match external route-map match-tag deny 10 match tag 200 

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Q9. RAG DROP 

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Q10. RAG DROP 

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