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CertBus 2019 Newest Cisco 400-251 CCIE Security Exam VCE and PDF Dumps for Free Download!

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Following 400-251 530QAs are all new published by Cisco Official Exam Center

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Question 1:

What are the most common methods that security auditors use to access an organizations security processes? (Choose two)

A. physical observation

B. social engineering attempts

C. penetration testing

D. policy assessment

E. document review

F. interviews

Correct Answer: AF


Question 2:

Which three statements about RLDP are true? (Choose three)

A. It detects rogue access points that are connected to the wired network.

B. It can detect rogue APs that use WPA encryption.

C. It can detect rogue APs operating only on 5 GHz.

D. It can detect rogue APs that use WEP encryption.

E. The AP is unable to serve clients while the RLDP process is active.

F. Active Rogue Containment can be initiated manually against rogue devices detected on the wired network.

Correct Answer: AEF

Rogue Location Discovery Protocol (RLDP) http://www.cisco.com/c/en/us/support/docs/wireless-mobility/wireless-lan-wlan/70987-rogue-detect.html


Question 3:

What are three features that are enabled by generating Change of Authorization (CoA) requests in a push model? (Choose three)

A. session reauthentication

B. session identification

C. host reauthentication

D. MAC identification

E. session termination

F. host termination

Correct Answer: BCE


Question 4:

Which three of these are properties of RC4? (Choose three)

A. It is a block cipher.

B. It is a stream cipher.

C. It is used in AES.

D. It is a symmetric cipher.

E. It is used in SSL.

F. It is an asymmetric cipher.

Correct Answer: BDE


Question 5:

Which type of header attack is detected by Cisco ASA basic threat detection?

A. denial by access list

B. bad packet format

C. failed application inspection

D. connection limit exceeded

Correct Answer: B


400-251 PDF Dumps400-251 Exam Questions400-251 Braindumps

Question 6:

Which two statements about NVGRE are true? (Choose two)

A. It supports up to 32 million virtual segments per instance.

B. The network switch handles the addition and removal of NVGRE encapsulation.

C. NVGRE endpoints can reside within a virtual machine.

D. It allows a virtual machine to retain its MAC and IP addresses when it is moved to a different hypervisor on a different L3 network.

E. The virtual machines reside on a single virtual network regardless of their physical location.

Correct Answer: CE


Question 7:

Which two statements about SPAN sessions are true? (Choose two)

A. A single switch stack can support up to 32 source and RSPAN destination sessions.

B. Source ports and source VLANs can be mixed in the same session

C. They can monitor sent and received packets in the same session.

D. Multiple SPAN sessions can use the same destination port.

E. Local SPAN and RSPAN can be mixed in the same session.

F. They can be configured on ports in the disabled state before enabling the port.

Correct Answer: CF


Question 8:

You are considering using RSPAN to capture traffic between several switches. Which two configuration aspects do you need to consider? (Choose two)

A. All switches need to be running the same IOS version.

B. All distribution switches need to support RSPAN.

C. Not all switches need to support RSPAN for it to work.

D. The RSPAN VLAN need to be blocked on all trunk interfaces leading to the destination RSPAN switch.

E. The RSPAN VLAN need to be allow on all trunk interfaces leading to the destination RSPAN switch.

Correct Answer: BE


Question 9:

Which two statements about the MACsec security protocol are true? (Choose two)

A. When switch-to-switch link security is configured in manual mode, the SAP operation mode must be set to GCM.

B. MACsec is not supported in MDA mode.

C. Stations broadcast an MKA heartbeat that contains the key server priority.

D. MKA heartbeats are sent at a default interval of 3 seconds.

E. The SAK is secured by 128 bit AES-GCM by default.

Correct Answer: CE


Question 10:

Which file extensions are supported on the Firesight Management Center 6.1 file policies that can be analyzed dynamically using the Threat Grid Sandbox integration?

A. MSEXE MSOLE2 NEW-OFFICE PDF

B. DOCX WAV XLS TXT

C. TXT MSOLE2 WAV PDF

D. DOC MSOLE2 XML PDF

Correct Answer: A


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