Cisco 400-201 Exam Preparation Material

By | February 4, 2020

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Question No. 1

A service provider is implementing an nV Edge system with the two ASR 9000 chassis has two RSPs. Which two cabling methods reflect the minimum configuration needed for full synchronization between the two Cisco ASR 9000 chassis? (Choose two)

Answer: A, E

Question No. 2

Refer to the exhibit

Refer to the exhibit. A network engineer is deploying the this RTBH filtering configuration template on 100 Cisco IOS XR router. What is missing from this configuration?

Answer: D

Question No. 3

Refer to the exhibit.

Which two Layer 2 headers of the frames that are initiated from router A will successfully reach router B? (Choose two.)

Answer: B, C

Question No. 4

Which E3 alarm indicates that there could be an issue with the transmit signal with the local equipment?

Answer: C

Question No. 5

Two islands of IPv6 networks that are running ISIS (IPv6 IGP) must be connected using a tunnel over an IPv4 network. Which tunneling method can be used to achieve this goal?

Answer: A

GRE has a protocol field that identifies the passenger protocol. GRE tunnels allow Intermediate System-to-Intermediate System (IS-IS) or IPv6 to be specified as a passenger protocol, which allows both IS-IS and IPv6 traffic to run over the same tunnel. If GRE did not have a protocol field, it would be impossible to distinguish whether the tunnel was carrying IS-IS or IPv6 packets. The GRE protocol field is why it is desirable that you tunnel IS-IS and IPv6 inside GRE


Question No. 6

Cisco IOS XR has implemented a nonstop routing feature so that when RP failover occurs, the routing information can be recovered locally. Which protocol does not support the NSR feature?

Answer: E

Question No. 7

What happens when a broadcast storm is detected?

Answer: C

Question No. 8

Refer to the exhibit. Which Cisco IOS XE configuration method allocates a label for prefixes with a /32 subnet mask only?

Answer: A

Question No. 9

In Cisco IOS XR architecture, what is lightweight messaging?

Answer: D

Question No. 10

Which option is the ATM Cell Relay feature that enhances throughtput and uses bandwidth more efficiently?

Answer: C

Question No. 11

In which two ways does the BGP graceful restart capability preserve prefix information during a restart? (Choose two.)

Answer: C, E

Question No. 12

In the context of MPLS, what is the correct action to be performed when an aggregate label is received?

Answer: D

Question No. 13

ISP_X has IPv4 only enabled in the MPLS backbone. ISP_X must provide IPv6 services to its customers including IPv6 Internet access. Which IPv6 transition mechanism allows ISP_X to provide IPv6 connected by leveraging the existing MPLS IPv4 core network?

Answer: A

Question No. 14

What is the port number of an IPSec Encapsulating Security Payload packet?

Answer: A

Question No. 15

Refer to the exhibit.

Which two configurations are shown? (Choose two)

Answer: B, D

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