400-251 Questions And Answers


Exam Name: CCIE Security Written Exam (v5.0)

Updated: 2022-06-26

Q & A: 124

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Question No : 1

Which are the three scanning engines that the Cisco IronPort dynamic vectoring and streaming engine can use to protect against malware? (Choose three)
A. Symantec
B. McAfee
C. F-Secure
D. TrendMicro
E. Sophos
F. Webroot
Answer: B, E, F

Question No : 2

Which three VSA attributes are present in a RADIUS WLAN Access-accept packet? (Choose three)
A. EAP-Message
B. Tunnel-Type
C. LEAP Session-Key
D. Tunnel-Private-Group-ID
E. Authorization-Algorithm-Type
Answer: C,E,F

Question No : 3

Which encryption type is used by ESA for implementing the Email Encryption?
A. SSL Encryption
C. Identity Based Encryption (IBE.
E. S/MIME Encryption
Answer: E

Question No : 4

Which two limitations of ISE inline posture are true?
A. The Cisco Discovery Protocol is not supported
B. QoS is not supported in a virtual environment
C. The Simple Network Management Protocol agent is not supported
D. Rexible NetFlow is not supported
E. Multicast is not supported
Answer: AC

Question No : 5

Which two statements about Cisco URL Filtering on Cisco IOS Software are true? (Choose Two)
A. By default, it allows all URLs when the connection to the filtering server is down.
B. It Supports Websense and N2H2 filtering at the same time.
C. ItSupports local URL lists and third-party URL filtering servers.
D. By default, it uses ports 8 and 22.
E. It Supports HTTP and HTTPS traffic.
F. It requires minimal CPU time.
Answer: C,E

Question No : 6

Which description of SaaS is true?
A. A service offering that allowing developers to build their own applications
B. A service offering a software environment in which applications can be build and deployed
C. A service offering on-demand licensed applications for end users
D. A service offering on-demand software downloads
Answer: C

Question No : 7

What is an example of a stream cipher?
A. RC4
B. Blowfish
D. RC5
Answer: A

Question No : 8

Which two options are open-source SDN controllers? (Choose two)
A. OpenContrail
B. OpenDaylight
C. Big Cloud Fabric
D. Virtual Application Networks SDN Controller
E. Application Policy Infrastructure Controller
Answer: A,B

Question No : 9

Which difference between DomainKeys and DKIM in a Cisco ESA deployment is true?
A. Only Domain Keys support incoming-mail authentication
B. AsyncOS supports mail signing for DKIM only
C. Bounce and delay messages can use DKIM only
D. AsyncOS supports mail signing and incoming-mail authentication for DomainKeys only
E. Bounce and delay messages can use Domain Keys only
F. If DomainKeys and DKIM are associated to a mail flow AsyncOS uses only DKIM to sign outgoing messages
G. Only DKIM supports incoming-mail verification
Answer: D

Question No : 10

Which two benefits of the Stealth Watch Flow Collector are true? (Choose two)
A. It can be deployed with hardware appliances or as virtual machines
B. It provides round trip time and server-response time calculations to optimize UDP connections
C. When deployed in a routed network its multiple flow sensors can aggregate data to provide full network visibility from Layer 1 to Layer?
D. It eliminates the need for separate flow sensors and flow collectors
E. Its management console provides numerous drill-down tools to help administrators isolate the root cause of an incident
F. It integrates with Cisco Outbreak intelligence for full zero-day threat protection
G. It can be configured and managed with the Stealth Watch management console which is an intuitive web interface, and a powerful CLI.
Answer: AB

Question No : 11

Which two statements about AMP Threat Grid are true? (Choose two)
A. It can transmit suspected malware to the public AMP | threat Grid cloud for deeper analysis
B. It provides two separate on premises appliances to support powerful malware analysis and threat intelligence features
C. It provide dynamic analysis reports and generates threat scores
D. It supports real time threat and behavioral analysis
E. It can be installed on individual endpoints to inspect local file for malware
F. It can act as an anonymized proxy lo transport endpoint, -vent data to the public AMP | threat Grid cloud for threat detection
Answer: BC

Question No : 12

Which two statements about Cisco ASA authentication using LDAP are true? (Choose two)
A. It uses attribute maps to map the AD memberOf attribute to the cisco ASA Group-Poilcy attribute
B. It uses AD attribute maps to assign users to group policies configured under the WebVPN context
C. The Cisco ASA can use more than one AD memberOf attribute to match a user to multiple group policies
D. It can assign a group policy to a user based on access credentials
E. It can combine AD attributes and LDP attributes to configure group policies on the Cisco ASA
F. It is a closed standard that manages directory-information services over distributed networks
Answer: A,B

Question No : 13

What are three technologies that can be used to trace the source of an attack in a network environment with multiple exit/entry points? (Choose three)
A. Remotely-triggered destination-based black holing
B. ICMP Unreachable messages
C. Sinkholes
D. A honey pot
E. Traffic scrubbing
Answer: C,D,E

Question No : 14

Which three messages are part of the SSL protocol? (Choose Three)
A. Change CipherSpec
B. Alert
C. Record
D. Message Authenication
E. CipherSpec
F. Handshake
Answer: A,B,F

Question No : 15

Which command sequence can you enter to enable IP multicast for WCCPv2?
A. Router(config)#ip wccp web-cache group-address
Router(config)# interface FastEthernet0/0
Router(config-if)#ip wccp web-cache redirect out
B. Router(config)#ip wccp web-cache group-list
Router(config)# interface FastEthernet0/0
Router(config)# ip wccp web-cache group-listen
C. Router(config)#ip wccp web-cache service-list
Router(config)# interface FastEthernet0/0
Router(config)# ip wccp web-cache group-listen
D. Router(config)#ip wccp web-cache group-address
Router(config)# interface FastEthernet0/0
Router(config)# ip wccp web-cache redirect in
E. Router(config)#ip wccp web-cache group-address
Router(config)# interface FastEthernet0/0
Router(config)# ip wccp web-cache group-listen
Answer: E
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