Cisco 400-201 Practice Exam Questions

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Question No. 1

Which three BGP features improve convergence? (Choose three.)

Answer: E, G, H

Question No. 2

Refer to the exhibit.

R3 is not able to install the R1 loopback address into its BGP routing table. What should be configured to install that route?

Answer: D

Question No. 3

What is the main difference between the information displayed on the dspload and the dsptrkutl screens?

Answer: B

Displays both the used and available bandwidth (both in the transmit and receive directions) for each trunk at the specified node. The “transmit” direction is from the node specified and to the node at the other end of the trunk. In the screen display, the numbers of disabled trunks appear in dim, reverse video on the screen.


Displays dynamic utilization information for a specified trunk. The trunk must be upped and added to use this command. The following lists the trunk utilization and terminated connection parameters included in the display. The parameter values are updated according to the specified or default interval and the screen remains displayed until the DEL key is depressed. Disabled trunks have their trunk number displayed in dim, reverse video on the screen.

Question No. 4

Which of the following statements regarding Control Plane Policing (CoPP) is correct? (Choose three.)

Answer: A, B, C

Question No. 5

Which ACL entry can be used to block Teredo tunnels?

Answer: B

Question No. 6

A service provider has a requirements to deploy a virtual router in its network to handle high-performance data plane service up to 20Gbps. Which Cisco solution fulfills this requirement?

Answer: B

Question No. 7

Which description of the Russian Doll Model is true?

Answer: C

Question No. 8

A Layer 3 VPN customer opened a case that reports connectivity loss with remote sites. An operations engineer realized this connectivity loss happened after the LDP label filtering was applied. What is the root cause of this issue?

Answer: B

Question No. 9

A network engineer wants to deploy a VPLS service within the MPLS backbone. The backbone expert team advises that LDP for signaling is used.

Which two characteristics of LDP would influence their decision? (Choose two.)

Answer: A, C

Question No. 10

Which three are advantages of SONET? (Choose three)

Answer: A, B, D

SONET Advantages

The big advantage of SONET is that it was designed to provide the following functions needed in networking at that time:

Single-step multiplexing

Access to low-level signals directly

Carry existing DS1, DS3, ATM, and packet traffic

Synchronous timing to eliminate bit stuffing

Overhead room for acceptable network management information

Allow transmission of data at higher speeds (50 Mbps+)

Question No. 11

Which three things are the building blocks of the Cisco VPLS architecture? (Choose three)

Answer: C, D, E

Question No. 12

Which Cisco IOS XR Virtualization technology provides full isolation between virtualized routing instances for extra control plane resources?

Answer: C

Question No. 13

Refer to the exhibit.

Inbound infrastructure ACLs are configured to protect the SP network. Which two types of traffic should be permitted in the infrastructure ACL? (Choose two.)

Answer: C, E

Question No. 14

Which protocol functions as the transfer protocol between the Cisco Open SDN Controller and forwarding devices?

Answer: C

Question No. 15

A customer requests that sites are connected over an MPLS backbone using the MPLS AToM service. However, the network engineer advises that the MPLS L3VPN service may be better for this situation. Which characteristic of MPLS L3VPN may make it a better option from the Service Provider perspective?

Answer: A

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