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400-251 Exam Questions & Answers

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400-251 Exam Questions & Answers

Vendor: Cisco

Certifications: CCIE

Exam Code: 400-251

Exam Name: CCIE Security Written

Updated: Dec 11, 2021

Q&As: 665

Exam retired

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Free 400-251 Exam Questions in PDF Format

400-251 Online Practice Questions and Answers

Questions 1

Which of the following statements correctly describe how DMVPN can be used to provide network segmentation over public transport networks?

A. The DMVPN hub and spokes must use the same VRF for a given DMVPN cloud.

B. The tunnel vrf command under the tunnel interface is used to associate clear text data packets with a VRF.

C. DMVPN can be used to transport MPLS packets inside of an mGRE tunnel

D. The vrf forwarding command under the tunnel interface is used to associate encrypted packets with a VRF.

E. The front door VRF for DMVPN is defined under the isakmp profile.

Show Answer
Questions 2

Which statement of DKIM signing in ESA is true?

A. The signing private key is required by the sending server

B. The outgoing profile in ESA is configured with signing private key

C. The domain profile is used to asso穋iate the sendline domain with the signing key

D. The receiving server gets the signing public key from ISE

E. The ESA does not allow the creation of a signing key pair

F. The signilng public key is required by the receiving server

Show Answer
Questions 3

Which describes of a Botnet attack is true ?

A. It is launched by a single machine controlled by command and control system

B. It is a form of a fragmentation attack to evade an intrusion prevention security device

C. It is launched by a collection of machines controlled by command and control system

D. It is a form of a wireless attack where attacker installs an access point to create backdoor to a network

E. It can by used to participate in DDoS .

F. It is a form of a man-in-the-middle attack where the compromised machine is controlled remotely C

Show Answer More Questions

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