Cisco Cisco Certified DevNet Associate 200-901 Questions & Answers

• Question 271:

  Refer to the exhibit.

  

  What does the load balancer enable in the network topology?

  A. hosted application to access Internet services

  B. external requests to be routed to the application servers

  C. workstations to access the Internet

  D. application to access the database server

  Correct Answer: B

• Question 272:

  Which tool allows changes to the configuration management toolset to be tested?

  A. Cisco VIRL

  B. NAPALM

  C. Ansible

  D. pyATS

  Correct Answer: D

• Question 273:

  What is a benefit of organizing code into modules?

  A. improves overall performance

  B. reduces the length of code

  C. enables code to be multifunctional

  D. enables the reuse of code

  Correct Answer: D

  Modules are a way to build independent and self-contained chunks of code that can be reused. Developers typically use modules to divide a large project into smaller parts. This way the code is easier to read and understand, and each module can be developed in parallel without conflicts. A Module is packaged as a single file and in addition to being available for integration with other modules, it should work independently. A module consists of a set of functions and typically contains an interface for other modules to integrate with. It is essentially a library and cannot be instantiated. Note: A module is just a set of functions in a file.

• Question 274:

  What is a benefit of test-driven development?

  A. early customer involvement

  B. increased code quality

  C. faster releases that have minimal features

  D. strict adherence to product requirements

  Correct Answer: B

• Question 275:

  A developer creates a script that configured multiple Cisco IOS XE devices in a corporate infrastructure. The internal test environment is unavailable, and no maintenance window is available to test on a low-priority production environment. Which resource is used to test the code before it is applied to the production environment?

  A. Code Exchange

  B. Cisco DevNet Learning Labs

  C. Cisco DevNet Sandbox

  D. Cisco Support

  Correct Answer: C

  Reference: https://developer.cisco.com/site/sandbox/

• Question 276:

  In the test-driven development model, what is changed after a test fails?

  A. test

  B. schedule

  C. project requirements

  D. code

  Correct Answer: D

  Reference: https://www.guru99.com/test-driven-development.html#:~:text=In%20simple%20terms%2C%20test%20cases,code%20simple%20and%20bug%2Dfree

• Question 277:

  What are two benefits of using VLANs? (Choose two.)

  A. limits the devices that can join the network

  B. segments the broadcast domain extends the broadcast domain

  C. allows all network devices to be accessible from any host on the network

  D. enables the logical grouping of devices that belong to different Layer 2 devices

  E. extends the broadcast domain

  Correct Answer: BD

• Question 278:

  Refer to the exhibit.

  

  The script returns an output of 401. To use the supplied URL. an HTTP GET request must Be sent with an Authorization header. The header value is a BaseG4 encoded concatenation of the username and password. Which action must be taken to return an output of 200?

  A. Change the verify=False setting in the request to verify=True to enable HTTP Basic authentication

  B. Modify the method from LOGIN to GET and supply the username ;password value as JSON payload

  C. Verify that the username and password values imported from the configuration file ate still valid.

  D. Insert an Authorization header with the values username password from the supplied configuration file.

  Correct Answer: B

  This seems like a trick question. Simply changing "login" to "get" should fix it. You're still keeping the HTTPBasicAuth header intact while also sending the user/pass in the json payload according to this answer. Sending it in the payload shouldn't do anything since it's a simple GET. The payload will be ignored and the basic auth header will be used.

• Question 279:

  Refer to the exhibit.

  

  Given the API documentation for the UCS SDK Python class, UcsHandle, which code snippet creates a handle instance?

  

  A. Option A

  B. Option B

  C. Option C

  D. Option D

  Correct Answer: B

  Reference: https://www.ciscolive.com/c/dam/r/ciscolive/us/docs/2016/pdf/LTRINI%202020-LG.pdf

• Question 280:

  A company has written a script that creates a log bundle from the Cisco DNA Center every day. The script runs without error and the log bundles are produced. However, when the script is run during business hours, people report poor voice quality of phone calls. What explains this behavior?

  A. The script is written in a low-level programming language where there is no memory safety. This causes a buffer overflow and disruption on the network.

  B. The speed and duplex settings in Cisco DNA Center are set incorrectly, which causes the transfer to be too slow.

  C. The script is running in the Voice VLAN and causes delays and jitter in the subnet.

  D. Generating the logs causes the CPU on the network controller to spike, which causes delays in forwarding the voice IP packets.

  Correct Answer: C