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Free CCDA 200-901 exam questions and answers

Question 1:

How does requesting a synchronous API operation differ from requesting an asynchronous API operation?

A. clients receive responses with a task id for further processing

B. clients subscribe to a webhook for operation results

C. clients poll for the status of the execution of operations

D. clients can access the results immediately

Correct Answer: C

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Question 2:

What are two advantages of YANG-based approaches for infrastructure automation? (Choose two.)

A. multi-platform vendor abstraction

B. compiles to executables that run on network devices

C. designed to reflect networking concepts

D. directly maps to JavaScript

E. command line driven interface

Correct Answer: AC

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Question 3:

Which device is used to transport traffic from one broadcast domain to another broadcast domain?

A. layer 2 switch

B. proxy server

C. router

D. load balancer

Correct Answer: C

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Question 4:

Which service provides a directory lookup for IP addresses and host names?

A. DNS

B. NAT

C. SNMP

D. DHCP

Correct Answer: A

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Question 5:

Users cannot access a webserver and after the traffic is captured, the capture tool shows an ICMP packet that reports “time exceeded in-transit”. What is the cause of this webserver access issue?

A. A router along the path has the wrong time.

B. A router along the path is misrouting the packets in a wrong direction.

C. The server is too loaded and the connection could not be handled in time.

D. The server is too far away and the packets require too much time to reach it.

Correct Answer: B

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Question 6:

Refer to the exhibit.

What is the value of the node defined by this YANG structure?

A. Option A

B. Option B

C. Option C

D. Option D

Correct Answer: D

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Question 7:

What is used in Layer 2 switches to direct packet transmission to the intended recipient?

A. MAC address

B. IPv6 address

C. spanning tree D. IPv4 address

Correct Answer: A

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Question 8:

Users cannot access a webserver and after the traffic is captured, the capture tool shows an ICMP packet that reports “communication administratively prohibited”. What is the cause of this webserver access issue?

A. An access list along the path is blocking the traffic.

B. Users must authenticate on the webserver to access it.

C. A router along the path is overloaded and thus dropping traffic.

D. The traffic is not allowed to be translated with NAT and dropped.

Correct Answer: A

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Question 9:

What is an advantage of a version control system?

A. facilitates resolving conflicts when merging code

B. ensures that unit tests are written

C. prevents over-writing code or configuration files

D. forces the practice of trunk-based development

Correct Answer: A

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Question 10:

Refer to the exhibit.

What is the result of executing this Ansible playbook?

A. The playbook copies a new start-up configuration to CISCO_ROUTER_01

B. The playbook copies a new running configuration to CISCO_ROUTER_01

C. The playbook backs up the running configuration of CISCO_ROUTER_01

D. The playbook backs up the start-up configuration of CISCO_ROUTER_01

Correct Answer: D

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Question 11:

A 401 HTTP response code is returned when calling a REST API. What is the error state identified by this response code?

A. The server cannot process the request as it has detected an issue in the request syntax or body.

B. The request has not been accepted because it requires authentication.

C. The sever accepted the request but the client is not authorized for this content.

D. The server cannot find the requested resource because the path specified is incorrect.

Correct Answer: B

Reference: https://blog.restcase.com/rest-api-error-codes-101/#:~:text=A%20401%20error%20response% 20indicates,credentials%20or%20none%20at%20all.

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Question 12:

What is the first development task in test-driven development?

A. Write code that implements a desired function.

B. Write a failing test case for a desired function.

C. Reverse engineer the code for a desired function.

D. Write a passing test case for existing code.

Correct Answer: B

Reference: https://technologyconversations.com/2013/12/20/test-driven-development-tdd-example-walkthrough/

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Question 13:

What is the purpose of a firewall in application deployment?

A. adds TLS support to an application that does not support it natively

B. limits traffic to only ports required by the application

C. provides translation for an application\’s hostname to its IP address

D. forwards traffic to a pool of instances of the application

Correct Answer: B

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Question 14:

A small company has 5 servers and 50 clients. What are two reasons an engineer should split this network into separate client and server subnets? (Choose two.)

A. Subnets will split domains to limit failures.

B. A router will limit the traffic types between the clients and servers.

C. Subnets provide more IP address space for clients and servers.

D. A router will bridge the traffic between clients and servers.

E. Internet access to the servers will be denied on the router.

Correct Answer: AE

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Question 15:

How does a developer create and switch to a new branch called “my-bug-fix” to develop a product fix?

A. git checkout -b my-bug-fix

B. git branch -b my-bug-fix

C. git branch my-bug-fix

D. git checkout my-bug-fix

Correct Answer: C

Reference: https://www.dnnsoftware.com/community-blog/cid/155105

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