CCNA 3 Module 14 Quiz - Network Automation (Answers)

1. What is JSON?

It is a data format for storing and transporting data.
It is a scripting language.
It is a database.
It is a compiled programming language.

Explanation: JavaScript Object Notation (JSON) is a data format used by applications to store and transport data.

2. What is an architectural constraint to which a true RESTful API web service must adhere?

It must support the XML data format.
It operates as a cloud service.
It runs as client/server model.
It uses HTTPS to transport data.

Explanation: Conforming to the constraints of the REST architecture is generally referred to as being “RESTful”. An API can be considered “RESTful” if it has the following features:

Client/server – The client handles the front end and the server handles the back end.
Stateless – No client data is stored on the server between requests. The session state is stored on the client.
Cacheable – Clients can cache responses locally to improve performance.

3. In the RESTful API request example, http://www.mapquestapi.com/directions/v2/route?outFormat=json&key=KEY&from=San+Jose,Ca&to=Monterey,Ca, which term describes the component directions/v2/route?

parameters
resources
API server
query

Explanation: In this sample API request, the different components are as follows:

– API Server – the MapQuest API server, http://www.mapquestapi.com
– Resources – the MapQuest directions API, directions/v2/route
– Query – the data format and information the client is requesting from the API service, include these:

Format – format JSON is requested
Key – authentication key, here it is KEY
Parameters – information pertaining to the request, in this example, ”from=San+Jose,Ca” and ”to=Monterey,Ca”

4. Which statement describes an API?

It is a set of functions and procedures that allows a client application to access the data of the service application.
It is a programming language for creating a web-based application.
It is a set of functions and subroutines to be used in a comprehensive application.
It is a set of rules that filter network traffic for web-based applications.

Explanation: An application programming interface (API) is a set of functions and procedures to allow communication among applications. Typically, a service application provides the API to allow client applications to access the data of the service application.

5. Which term describes the process of managing configuration changes of network devices in an orderly fashion?

orchestration
version control
provisioning
automation

Explanation: Configuration management tools typically include automation and orchestration. Automation is automatically performing a task on a system. Arranging the automated tasks into a coordinated process or workflow is called orchestration.

6. Which web service API can use multiple data formats including JSON, XML, and YAML?

JSON-RPC
REST
SOAP
XML-RPC

Explanation: REST API can use multiple data formats including JSON, XML, YAML, and others. Both SOAP and XML-RPC use XML format. JSON-RPC uses JSON format.

7. What are two reasons that most RESTful APIs require a key in the request? (Choose two.)

to authenticate the requesting source
to gather information on the people using the API
to encrypt the query message in the API request
to make sure that the query matches the service offered by the web application
to specify the data format expected from the response

Explanation: Many RESTful APIs, including public APIs, require a key. The reasons an API provider may require a key include the following:

to authenticate the source to make sure it is authorized to use the API
to limit the number of people using the API
to better capture and track the data being requested by users
to gather information on the people using the API

8. What is a difference between the XML and HTML data formats?

XML uses a self-descriptive data structure but HTML uses a standard document structure.
XML formats data in hexadecimal whereas HTML formats data in binary.
XML requires indentation for each key/value pair whereas HTML does not require indentation.
XML encloses data within a pair of tags whereas HTML uses a pair of quotation marks to enclose data.

Explanation: XML is a human readable data structure used to store, transfer, and read data by applications. Like HTML, XML uses a related set of tags to enclose data. However, unlike HTML, XML does not use predefined tags or a standard document structure, but rather it uses self-descriptive tags and structure.

9. A programmer is using Ansible as the configuration management tool. Which term is used to describe a set of instructions for execution?

Pillar
Manifest
Cookbook
Playbook

Explanation: Ansible uses the name Playbook to describe the set of instructions to be executed.

10. Which term is used to describe a set of instructions for execution by the configuration management tool Chef?

Playbook
Pillar
Cookbook
Manifest

Explanation: The configuration management tool Chef uses the name Cookbook to describe the set of instructions to be executed.

11. Which two configuration management tools are developed using Python? (Choose two.)

Chef
Ansible
SaltStack
Puppet
NETCONF

Explanation: Ansible and SaltStack are configuration management tools developed using Python. Chef and Puppet are configuration management tools developed using Ruby. Ruby is typically considered a more difficult language to learn than Python. NETCONF is a network management protocol.

12. Which function of the Cisco intent-based networking system (IBNS) enables network operators to express the expected networking behavior that will best support the business intent?

translation
ACL analysis
activation
assurance

Explanation: The translation feature of Cisco IBNS enables network operators to express the expected network behavior that will best support the business intent.

13. Which types of APIs are suitable for the data communication between a travel website and a hotel chain inquiring about room availability data?

public APIs
partner APIs
open APIs
internal APIs

Explanation: Application APIs are categorized as follows:

Open APIs or Public APIs – publicly available and can be used with no restrictions
Internal or Private APIs – used by an organization or company to access data and services for internal use only
Partner APIs – used between a company and its business partners or contractors to facilitate business between them

14. Which characters are used to enclose a JSON key?

commas
square brackets
colons
quotation marks

Explanation: JSON keys are on the left side of the colon. They need to be wrapped in double quotation marks, as in “key”, and can be any valid string.

15. Which character is used to separate JSON key/value pairs?

(semi colon) ;
(dash) –
(comma) ,
(forward slash) /

Explanation: Each key/value pair in a series of key/value pairs is separated by a comma, so the middle of a JSON looks like this “key”: “value”, “key”: “value”.

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