Cisco 400-201 Practice Exam Questions

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Question No. 1

Two customer sites are connected to a service provider backbone through L2VPN. GRE is carrying L2VPN circuits across the backbone. Which part of the packet carries the information to route the L2VPN circuits?

Answer: A

Question No. 2

In Multicast VPN (MVPN) implementations, which two of the following statements are regarding the Default MDT Group? (Choose two).

Answer: A, D

MVPN supports two MDT types:

*Default MDT—The default MDT is a permanent channel for PIM control messages and low-bandwidth streams between all PE routers in a particular multicast domain. All multicast traffic in the default MDT is replicated to every other PE router in the domain. Each PE router is logically seen as a PIM neighbor (one hop away) from every other PE router in the domain.

*Data MDT—Data MDTs are optional. If enabled, they are dynamically created to provide optimal paths for high-bandwidth transmissions, such as full-motion video, that do not need to be sent to every PE router. This allows for on-demand forwarding of high-bandwidth traffic between PE routers, so as to avoid flooding every PE router with every high-bandwidth stream that might be created.

Question No. 3

A network engineer is trying to optimize convergence.

What action should be taken to overcome EBGP frequent session loss due to interface flapping between two different AS routers?

Answer: B

Question No. 4

Refer to the exhibit.

XYZ is using the BSR method and PE1 has the configuration shown.

Answer: B

Question No. 5

An engineer is designing a security method for a service provider company that needs to secure BGP peering with external peers. Based on the options provided, which three security precautions should be taken? (Choose three.)

Answer: A, B, C

Question No. 6

Which two statements about Layer 3 MPLS VPN are true? (Choose two.)

Answer: A, C

Question No. 7

Refer to the exhibit.

An ISP network runs L3VPN MPLS over the IP core to deliver internet service for the customer as a central service through a dedicated VRF.

Which route target plan delivers the internet service to customers while preserving customer VRF privacy?

Answer: D

Question No. 8

What is the relationship between the Domain Name System (DNS) and LDAP?

Answer: D

Question No. 9

What is the typical marked DSCP value for a voice media packet in Voice over IP technology?

Answer: E

Question No. 10

What is the main goal of the incident management?

Answer: A

Question No. 11

Refer to the exhibit.

An MPLS-based service provider wants to deploy QoS over its backbone. Original customer QoS information must be preserved when the packet leaves the MPLS network. In addition, the egress LSR must forward packets according to the LSP Diff-Service information, as depicted in the topology. Which QoS model satisfies these requirements?

Answer: B

Question No. 12

Refer to the exhibit.

Refer to the exhibit. A company has four office locations, which are identified as 1,2,3 and 4. The PE routers at these locations have assigned RDs of 10:10 , 20:20, 30:30 and 40:40, respectively Locations 1 and 3 need to share routing information

Which set of configurations allows for this requirement?

Answer: E

Question No. 13

Which protocol provides fast link failure detection for all type of encapsulation?

Answer: D

Question No. 14

Which option is the benefit of per-link LFA over per-prefix LFA?

Answer: C

Question No. 15

In the Carrier Supporting Carrier (CsC) feature, which two options represent protocols that run between CSC-PE and CSC-CE? (Choose two.)

Answer: C, E

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