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Cisco 300-420 問題練習

Designing Cisco Enterprise Networks (ENSLD) 試験

最新更新時間: 2022/07/31,合計60問。

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Question No : 1
Which common issue causes intermittent DMVPN tunnel flaps?

正解:

Question No : 2
An engineer must design a solution to provide backup connectivity between two sites. The engineer plans to use an Internet connection but company policy requires the connection to be encrypted. Additionally, there are several applications that utilize multicast to deliver video streams between the sites .
Which technology should the design include?

正解:

Question No : 3
Which feature is required for graceful restart to recover from a processor failure?

正解:
Explanation:
https://archive.nanog.org/meetings/nanog42/presentations/Weissner_SSO.pdf
The Stateful Switchover (SSO) feature works with Nonstop Forwarding (NSF) in Cisco software to minimize the amount of time a network is unavailable to its users following a switchover. The primary objective of SSO is to improve the availability of networks constructed with Cisco routers.

Question No : 4
A customer has several remote sites connected with their headquarters through microwave links.
An engineer must propose a backup WAN solution based on these conditions:



Which backup WAN link type the engineer recommend?

正解:

Question No : 5
Which two options can you use to configure an EIGRP stub router? (Choose two)

正解:

Question No : 6
Which function are fabric intermediate nodes responsible for in an SD-Access Architecture?

正解:

Question No : 7
What is one function of the vSmart controller in an SD-WAN deployment?

正解:

Question No : 8
An engineer must design a solution to connect a customer to the Internet. The solution will include a Layer 3 circuit with a CIR of 50 Mbps from the service provider. The hand-off from the provider's switch to the customer's router is 1Gbps .
Which solution should the engineer include to prevent potential issues with choppy voice traffic?

正解:

Question No : 9
An engineer must use YANG with an XML representation to configure a Cisco IOS XE switch with these specifications:
✑ IP address 10.10.10.10/27 configured on the interface GigabitEthernet2/1/0
✑ connectivity from a directly connected host 10.10.10.1/27
Which YANG data model set must the engineer choose?
A)



B)



C)



D)



正解:

Question No : 10
A customer is discussing QoS requirements with a network consultant. The customer has specified that end-to-end path verification is a requirement .
Which QoS solution meets this requirement?

正解:

Question No : 11
A company with multiple service providers wants to speed up BGP convergence time in the event a failure occurs with their primary link .
Which approach achieves this goal and does not impact router CPU utilization?

正解:

Question No : 12
An engineer is designing a multicast network for a company specializing in VoD content. Receivers are across the Internet, and for performance reasons, the multicast framework close to the receivers within each AS. For high availability, if the sources in one AS are no longer available, the receivers of that AS must be able to receive the VoD content from sources in another AS .
Which feature must the design include?

正解:
Explanation:
https://learningnetwork.cisco.com/s/question/0D53i00000KsrGrCAJ/rendezvous-point-high-availability-mechanisms

Question No : 13
DRAG DROP
An engineer must design an addressing plan for a small business using a single /24 network. Each department must have its own subnet.
Drag and drop the subnets from the left onto the departments requirements that they fulfill on the right. Not all options are used.



正解:

Question No : 14
What is the role of a control-plane node in a Cisco SD-Access architecture?

正解:
Explanation:
Reference: https://netaavi.com/my-blog-1/f/overview-of-sda-fabric-solution

Question No : 15
An organization plans to deploy multicast across two different autonomous systems.
Their solution must allow RPs to:
• discover active sources outside their domain
• use the underlying routing information for connectivity with other RPs
• announce sources joining the group
Which solution supports these requirements?

正解:
Explanation:
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipmulti_pim/configuration/xe-3s/asr903/imc-pim-xe-3s-asr903-book/imc_msdp.pdf

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