Which task is performed because the test-driven development approach is being used?

testing existing software before developing new code

creating test scenarios based on continuous development

writing code without committing any coding violations

refactoring code that is covered by existing tests

testing existing software before developing new code

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

Write a failing test case for a desired function.

Write code that implements a desired function.

Write a failing test case for a desired function.

Reverse engineer the code for a desired function.

Write a passing test case for existing code.

What is a benefit of test-driven development?

strict adherence to product requirements

faster releases that have minimal features

Which two statements describe the advantages of using a version control system? (Choose two.)

It allows for branching and merging so that different tasks are worked on in isolation before they are merged into a feature or master branch.

It allows multiple engineers to work against the same code and configuration files and manage differences and conflicts.

It allows for branching and merging so that different tasks are worked on in isolation before they are merged into a feature or master branch.

It provides tooling to automate application builds and infrastructure provisioning.

It allows multiple engineers to work against the same code and configuration files and manage differences and conflicts.

It provides a system to track User Stories and allocate to backlogs.

It allows developers to write effective unit tests.

What are two advantages of version control software? (Choose two.)

It supports tracking and comparison of changes in binary format files.

It allows new team members to access the current code and history.

It supports tracking and comparison of changes in binary format files.

It allows new team members to access the current code and history.

It supports comparisons between revisions of source code files.

It provides wiki collaboration software for documentation.

It allows old versions of packaged applications to be hosted on the Internet.

What is an advantage of a version control system?

facilitates resolving conflicts when merging code

ensures that unit tests are written

prevents over-writing code or configuration files

forces the practice of trunk-based development

Which two statements about JSON and XML are true? (Choose two.)

JSON objects are collections of key-value pairs.

The syntax of XML contains tags, elements, and attributes.

The syntax of JSON contains tags, elements, and attributes.

XML objects are collections of key-value pairs.

JSON objects are collections of key-value pairs.

JSON arrays are an unordered set of key-value pairs.

The syntax of XML contains tags, elements, and attributes.

Which two statements about JSON and XML are true? (Choose two.)

Functions allow problems to be split into simpler, smaller groups, and reduce code repetition, which makes the code easier to read.

Functions ensure that a developer understands the inner logic contained before using them as part of a script or application.

Functions create the implementation of secret and encrypted algorithms

Functions allow problems to be split into simpler, smaller groups, and reduce code repetition, which makes the code easier to read.

Functions store mutable values within a script or application.

What is a benefit of organizing code into modules?

enables code to be multifunctional

What is a benefit of organizing code into modules?

improves collaboration of the development team

enables the code to be broken down into layers

improves collaboration of the development team

makes it easier to deal with large and complex systems

enables the inclusion of more programming languages in the code

What is the outcome of executing this command? git clone ssh:/john@example.com/path/to/my-project.git

creates a local copy of a repository called “my-project”

initiates a new Git repository called “my-project”

creates a copy of a branch called “my-project”

creates a new branch called “my-project”

Which action does the Git command git merge allow the developer to perform?

Combine multiple sequences of commits into one unified history

Push changes to the remote repository

Create, list, rename, and delete branches

A developer is reviewing a code that was written by a colleague. It runs fine, but there are many lines of code to do a seemingly simple task repeatedly. Which action organizes the code?

Using functions, rewrite any pieces of code that are repeated.

Refactor the code by removing any unnecessary tests.

Reverse engineer and rewrite the code logic.

Using functions, rewrite any pieces of code that are repeated.

Which principle is a value from the manifesto for Agile software development?

customer collaboration over contract negotiation

processes and tools over teams and interactions

detailed documentation over working software

adhering to a plan over responding to requirements

customer collaboration over contract negotiation

Which advantage does the agile process offer compared to waterfall software development?

to add or update features with incremental delivery

to view the full scope of end-to-end work

to have each phase end before the next begins

to fix any issues at the end of the development cycle

How do XML and JSON compare regarding functionality?

JSON natively supports arrays and XML does not natively support arrays.

XML provides more support for mapping data structures into host languages than JSON.

XML provides more human readability than JSON.

JSON provides less support for data types than XML.

JSON natively supports arrays and XML does not natively support arrays.

What are two principles of an infrastructure as code environment? (Choose two.)

Components are coupled, and definitions must be deployed for the environment to function.

Redeployments cause varying environment definitions.

Environments must be provisioned consistently using the same inputs.

Service overlap is encouraged to cater for unique environment needs.

Complete complex systems must be able to be built from reusable infrastructure definitions.

Refer to the exhibit. The JSON data in the exhibit has been parsed and stored into a variable “data”. What returns the value “172.16.0.11”?

data[‘items’][0][‘host’][‘value’]

data[‘items’][‘host’][‘value’]

data[‘items’][1][‘host’][‘value’]

data[‘items’][0][‘host’][‘value’]

data[‘items’][‘host’][1]

Refer to the exhibit. What does the Python function do?

It returns HTTP Basic Authentication.

It returns DNAC user and password.

It reads a token from a local JSON file and posts the token to the DNAC URL.

It returns an authorization token.

Package updates from a local server fail to download. However, the same updates work when a much slower external repository is used. Why are local updates failing?

The update utility is trying to use a proxy to access the internal resource.

The server is running out of disk space.

The Internet connection is too slow.

The Internet is down at the moment, which causes the local server to not be able to respond.

The update utility is trying to use a proxy to access the internal resource.

Refer to the exhibit. A REST API returns this JSON output for a GET HTTP request, which has been assigned to a variable called “vegetables”. Using Python, which output is the result of this command?print(filter(lambda 1: 1[‘type’] == ‘fruit’, vegetables) [0][‘items’][0][‘items’][0])

{‘color’: ‘green’, ‘items’: [‘kiwi’, ‘grape’]}

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

The request has not been accepted because it requires authentication.

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

The request has not been accepted because it requires authentication.

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

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

Cisco 200-901 Practice Test 1 - Free Online Exam Prep & Questions

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

A.

User acceptance testers develop the test requirements.

B.

It enables code refactoring.

C.

Tests are created when code is ready for release.

D.

Implementation is driven by incremental testing of release candidates.

E.

Write a test before writing code.

Cisco 200-901 Practice Test 1

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Cisco 200-901 Practice Tests

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