CCIE Routing and Switching Written Exam 400-101 exam sample questions Certpark

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Share some CCIE 400-101 exam questions and answers below.
When you deploy DMVPN, What is the purpose of the command crypto isakmp key ciscotest address 0.0.0.0.0.0.0.0.? 
A. It is configured on the hub and spoke routers to establish peering 
B. It is configured on the hub to set the pre-shared key for the spoke routers. 
C. It is configured on the internet PE routers to allow traffic to traverse the ISP core. 
D. It is configured on the spokes to indicate the hub router. 
Answer: B

Which set of commands conditionally advertises 172.16.0.0/24 as long as 10.10.10.10/32 is in the routing table? 
A. 



B. 



C. 



D. 



Answer: C

How does an IPv6 host automatically generate a global address? 
A. It prepends its interface identifier to the network prefixes contained in Router Advertisement messages. 
B. It appends its interface identifier to the network prefixes contained in Router Advertisement messages. 
C. It appends its interface identifier to the network prefixes contained in Router Solicitation messages. 
D. It prepends its interface identifier to the network prefixes contained in Router Solicitation messages. 
Answer: B

Which option describes how a router responds if LSA throttling is configured and it receives the identical LSA before the interval is set? 
A. The LSA is added to the OSPF database and a notification is sent to the sending router to slow down its LSA packet updates. 
B. The LSA is added to the OSPF database. 
C. The LSA is ignored. 
D. The LSA is ignored and a notification is sent to the sending router to slow its LSA packet updates. 
Answer: C

Which two statements about IP source guard are true? (Choose two.) 
A. it must be applied to EtherChannel port members. 
B. It is available only on L2 ports. 
C. It is supported in software only. 
D. It is not supported on private VLANS. 
E. It blocks DHCP packets. 
Answer: B, D

Which three parameters must match to establish OSPF neighbor adjacency? (Choose three.) 
A. the process ID 
B. the hello interval 
C. the subnet mask 
D. authentication 
E. the router ID 
F. the OSPF interface priority 
Answer: BCD

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