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400-251 Exam Questions - Online Test


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Q1. DRAG DROP

Drag each step in the configuration of flexiblenetflow IPv6 traffic Unicast flows on the left into the Correct order of operation on the right?

Answer:

Explanation:

Step 1: Configure the flow exporter

Step 2: configure flow record Step 3: configure flow monitor Step 4: Apply flow monitor Step 5: Configure data export.

Q2. Which two statement about MSDP ate true? (Choose three)

A. It can connect to PIM-SM and PIM-DM domains

B. It announces multicast sources from a group

C. The DR sends source data to the rendezvous point only at the time the source becomes active

D. It can connect only to PIM-DM domains

E. It registers multicast sources with the rendezvous point of a domain

F. It allows domains to discover multicast sources in the same or different domains.

Answer: B,E,F

Q3. What are the two IPSec modes? (Choose two)

A. Aggressive

B. ISAKMP

C. Transport

D. IKE

E. Main

F. Tunnel

Answer: C,F

Q4. DRAG DROP

Drag each IP transmission and fragmentation term on the left to the matching statement on the right?

Answer:

Explanation: DF bit: A value in the IP header that indicates whether packet fragmentation is permitted.

Fragment offset: A value in the IP packet that indicates the location of a fragment in the datagram.

MF bit: Indicates that this is last packet with the biggest offset.

MSS: The amount of data that the receiving host can accept in each TCP segment. MTU: A value representing the maximum acceptable length of a packet to be transmitted over a link. PMTUD: A technology used to prevent fragmentation as data travels between two end points.

Tunnel: A logical interface allows packet to be encapsulated inside a passenger protocol for transmission across a

different carrier protocol.

Q5. Your 1Pv6 network uses a CA and trust anchor to implement secure network discover. What extension must your CA certificates support?

A. extKeyUsage

B. nameConstrainsts

C. id-pe-ipAddrBlocks

D. Id-pe-autonomousSysldsE. Ia-ad-calssuers

E. keyUsage

Answer: B

Q6. Which description of a virtual private cloud is true?

A. An on-demand configurable pool of shared software applications allocated within a public cloud environment, which provides tenant isolation

B. An on-demand configurable pool of shared data resources allocated within a private cloud environment,

which provides assigned DMZ zones

C. An on-demand configurable pool of shared networking resources allocated within a private cloud environment, which provides tenant isolation

D. An on-demand configurable pool of shared computing resources allocated within a public cloud environment, which provides tenant isolation

Answer: D

Q7. Which configuration is the correct way to change VPN key Encryption key lifetime to 10800 seconds on the key server?

A)

B)

C)

D)

E)

A. Option A

B. Option B

C. Option C

D. Option D

Answer: A

Q8. Which three options are methods of load-balancing data in an ASA cluster environment?(Choose three)

A. HSRP

B. spanned EtherChannel

C. distance-vector routing

D. PBR

E. floating static routes

F. ECMP

Answer: B,D,F

Q9. What are three QoS features supported on the ASA running version 8.x? (Choose Three)

A. Traffic shaping and standard priority queuing on the same interface.

B. IPSec-over-TCP priority queuing.

C. Traffic shaping within the class-default class map only.

D. Priority queuing.

E. Traffic shaping within any class map.

F. Traffic policing.

Answer: C,D,F

Q10. Which two statements about SGT Exchange Protocol are true? (Choose two)

A. It propagates the IP-to-SGT binding table across network devices that do not have the ability to perform

SGT tagging at Layer 2 to devices that support it

B. SXP runs on UDP port 64999

C. A connection is established between a “listener” and a “speaker”

D. SXP is only supported across two hops

E. SXPv2 introduces connection security via TLS

Answer: A,C