NO.1 What are the two technologies that support AFT? (Choose two)
B. NAT-6to4
F. NAT64
Answer: E,F

NO.2 Refer to the exhibit .
Routers R1, R2, and R3 have IPv6 reachability, and R1 and R3 are able to ping each other with the
IPv6 global unicast address. However, R1 and R3 are unable to ping each other with their link-local
What is a possible reason for the problem?
A. Link-local addresses are forwarded by IPv6 routers using loopback interfaces.
B. Link-local addresses can communicate with neighboring interfaces.
C. Multicast must be enabled to allow link-local addresses to traverse multiple hops.
D. Link-local addresses can be used only with a physical interfaces local network.
Answer: D

400-251 Passed   

NO.3 What are the two IPSec modes? (Choose two)
A. Main
B. Aggressive
D. Transport
E. Tunnel
Answer: D,E

400-251 Braindumps   

NO.4 Refer to the exhibit You have received an advisory that your organization could be running a
vulnerable product. Using the Cisco Systems Rapid Risk Vulnerability Model, you determine that*
Your organization is running an affected product on a vulnerable version of code vulnerable
component is enabled and there is no feasible workaround * There is medium confidence of an
attack without significant collateral damage to the organization. According to the model what is the
appropriate urgency for remediation?
A. priority maintenance process
B. standard maintenance process
C. remove vulnerable device from service
D. contact ISP to trace attack
E. immediate mitigation process
F. no action required
Answer: B

400-251 CBT   

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400-251Exam Code: 400-251
Exam Name: CCIE Security Written
One year free update, No help, Full refund!
400-251 Customizable Exam Mode Total Q&A: 315 Questions and Answers
Last Update: 06-08,2017

400-251 Guaranteed Questions Answers Detail: 400-251 Customizable Exam Mode


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