200-901 Free Practice Test

- (Exam Topic 3)
A developer completed the creation of a script using Git. Before delivering it to the customer, the developer wants to be sure about all untracked files, without losing any information. Which command gathers this information?

1. A. git clean –n
2. B. git rm –f
3. C. git clean –r
4. D. git rm *

Correct Answer: A

- (Exam Topic 1)
Which two concepts describe test-driven development? (Choose two.)

1. A. It enables code refactoring.
2. B. Write a test before writing code.
3. C. Implementation is driven by incremental testing of release candidates.
4. D. User acceptance testers development the test requirements.
5. E. Tests are created when code is ready for release.

Correct Answer: BC
https://www.tutorialspoint.com/software_testing_dictionary/release_candidate.htm

- (Exam Topic 2)
A company wants to accelerate the adoption of technologies that will simplify its operations. Staff have different skill levels and are looking for a single site to find easy-to-consume beginner, intermediate, and
advanced multidomain use cases. Which site should be used?

1. A. DevNet Ecosystem Exchange
2. B. DevNet Automation Exchange
3. C. DevNet Creations
4. D. DevNet Support Forum

Correct Answer: D

- (Exam Topic 3)
A developer creates a program in which an object maintains a list of classes based on the observer pattern. The classes are dependent on the object. Whenever the state of the object changes, it notifies the dependent classes directly through callbacks. Which advantage of the observer pattern offers minimum dependencies and maximum flexibility between dependent objects or classes?

1. A. tight coupling
2. B. cohesion
3. C. mediation
4. D. loose coupling

Correct Answer: D

- (Exam Topic 3)
Refer to the exhibit.

An administrator attempts to perform a GET operation by using the Cisco IOS XE RESTCONF API to return the hostname of a device. The sequence diagram in the exhibit illustrates the HTTP messages observed. Which change to the API request resolves the issue?

1. A. Remove the -H 'Accept: application/yang-data+json’ header.
2. B. Replace -u cisco:cisco parameter with -u ‘cisco:cisco’.
3. C. Change the request method from -X ‘GET’ to -X ‘POST’.
4. D. Add the -H ‘Content-Type: application/yang-data+json’ header.

Correct Answer: B