Cisco 400-201 Exam PDF Syllabus

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Question No. 1

In which way does SyncE propagate the clocking information in synchronous mode over an Ethernet link?

Answer: B

Question No. 2

Which four statements about an IP service level agreement (SLA) are true? (Choose four)

Answer: A, B, C, E

Question No. 3

Select the 3 best answers describing operation and configuration of Frame-Relay Inverse ARP.

Answer: A, B, C

Question No. 4

Which three components are required to support ISSU? (Choose Three)

Answer: A, B, F

Question No. 5

An MPLS VPN service is deployed over an MPLS provider. A customer wants all sites to run BGP with his provider, given that all CEs have the same AS value. Which feature on the service provider PEs can allow communication among different sites?

Answer: D

Question No. 6

A service provider is providing Layer 2 VPN between CE1 and CE2 via a pseudowire created between R1 and R5. What is the label stack of the packets leaving R6 going toward R5 for traffic flowing from CE1 to CE2?

Answer: F

Question No. 7

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

Answer: C, D, E

Question No. 8

What best describes the usage of Route-Target rewrite?

Answer: B

Question No. 9

Refer to the exhibit.

A router has this error in the syslog message

What issue has it reported ?

Answer: D

Question No. 10

Refer to the exhibit. The NOC team received multiple reports about poor quality of the VoIP traffic. An engineer notices that all VoIP traffic with poor quality uses Core links with QoS implemented. Which are the two reasons for this issue? (Choose two)

Answer: A, B

Question No. 11

Which BGP feature improves the convergence and response time to adjacency changes with BGP neighbors?

Answer: E

Question No. 12

What is one of the primary overhead fields associated with the Optical Payload Unit (OPU)?

Answer: C

Optical Payload Unit (OPU)

In order to begin describing the OTN as defined by the ITU G.709 standard, we must first enumerate its critical elements, their termination points, and the way they relate to one another in terms of hierarchy and function.

The primary overhead field associated with the OPU is the payload structure identifier (PSI). This is a 256-byte multiframe whose first byte is defined as the payload type (PT). The remaining 255 bytes are currently reserved. The other fields in the OPU overhead are dependent on the mapping capabilities associated to the OPU. For an asynchronous mapping (the client signal and OPU clock are different) justification control (JC) bytes are available to Application Note 153Telecom Test and Measurement compensate for clock rate differences. For a purely synchronous mapping (client source and OPU clock are the same), the JC bytes become reserved. Further details on mapping are available in ITU G.709.

Question No. 13

A service provider is using Cisco ME 3400 Series Ethernet Access Switches on the edge of a Metro Ethernet POP. A customer has a requirement to connect a switch to the network and requires the ability to trunk VLANs on the uplink port into the provider network. Which port type should the engineer configure on the switch to meet this requirement while maintaining a secure edge implementation?

Answer: C

Question No. 14

Which timing over packet solution provides only accurate frequency synchronization, but does not provide time/phase synchronization?

Answer: D

Question No. 15

Which Cisco IOS XR security component can protect the route processor of the Cisco CRS router?

Answer: C

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