400-251 CCIE Security Study Guide

By | December 16, 2019

These Cisco 400-251 exam dumps are authentic and help you understand topics of designing, implementing, operating, and troubleshooting complex Cisco security technologies and solutions.

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Question No. 1

Which IETF standard is the most efficient messaging protocol used in a toT network?

Answer: A

Question No. 2

Which statement about private VLANs is true?

Answer: B

Question No. 3

Which policy action allows to a pass without any further inspection by the intrusion when implementing Cisco Firepower access control policy?

Answer: F

Question No. 4

Which Cisco Firepower interface mode allows you to send inline traffic directly through the device and only inspect a copy of the traffic?

Answer: A

Question No. 5

Which two statements about AMP. The Grid are true? (Choose two)

Answer: B, C

Question No. 6

From the list below, which one is the major benefit of AMP Threat GRID?

Answer: B

Question No. 7

Which statement is true about a SMURF attack?

Answer: B

Question No. 8

Which two combinations of node are allowed in a Cisco ISE distributed deployment? (Choose two)

Answer: B, D

Question No. 9

Which statement about securing connection using MACsec is true?

Answer: E

Question No. 10

Transmission control protocol, src port: 649999(64999), Dst Port:49086(49086),Seq:2,Ack:2,Len:

Refer to the exhibit.

Answer: D

Question No. 11

What are two types of attacks against wireless networks that be prevented by a WLC? (Choose two)

Answer: A, D

Question No. 12

Which statement about VRF-Lite implementation in a service provider network is true?

Answer: E

Question No. 13

Refer to the exhibit.

aaa authentication login default group radius

aaa authentication login NO_AUTH none

aaa authentication login vty local

aaa authentication dot1x default group radius

aaa authorization network default group radius

aaa accounting update newinfo

aaa accounting dot1x default start-stop group radius


p dhcp excluded-address

ip dhcp excluded-address


p dhcp pool mabpc-pool




ts sxp enable

cts sxp default source-ip

cts sxp default password ccie

cts sxp connection peer password default mode peer listener hold-time


ot1x system-auth-control


nterface GigabitEthernet1/0/9

switchport mode access

ip device tracking maximum 10

authentication host-mode multi-auth

authentication port-control auto



adius-server host key cisco

radius-server timeout 60


interface VLAN10

ip address


nterface Vlan50

no ip address


nterface Vlan60

ip address


nterface Vlan150

ip address

Looking at the configuration what may cause the MAB authentication to fail for a


Answer: E

Question No. 14

Which feature of WEP was intended to prevent an attacker from altering and resending data packets over a WEP connection ?

Answer: E

Question No. 15

Which of the following is AMP Endpoint offline engine for windows?

Answer: D

Question No. 16

Refer to the exhibit.

Which two effects of this configuration are true? (Choose two.)

Answer: C, F

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