CCNA AI and Network Operations Practice Test 12 — 15 Questions

Question 1

Match each REST-style method to the most common intent.

Accepted Answer

GET - Retrieve a resource. RESTful methods map to CRUD operations: GET retrieves, POST creates, PUT replaces, PATCH partially updates, DELETE removes, and OPTIONS returns allowed methods.

Answer

GET - Create a new resource

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POST - Retrieve a resource

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PUT - Partially update a resource

Question 2

In a REST-style API, which method is most commonly associated with retrieving information?

Accepted Answer

GET. GET is the method most commonly associated with retrieving information. In practical terms, when a client wants to read state, inventory, or configuration details from an API endpoint without modifying the resource, GET is the expected choice.

This is a core automation vocabulary question and works well as an easier confidence-building item.

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DELETE

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POST

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PUT

Question 3

Which two statements accurately describe why structured telemetry and APIs improve operational tooling?

Accepted Answer

They make it easier for software to process known fields consistently.. Structured telemetry and APIs improve tooling because they reduce ambiguity and make automation more reliable. In practical terms, software can collect and compare known fields, counters, and states without brittle text parsing. That supports dashboards, reporting, and automated checks much better than relying only on human-oriented command output.

This is a broad operations-and-automation value question rather than a protocol memorization item.

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They eliminate the need for secure transport or access control.

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They force all devices to stop supporting CLI access.

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They are used only on wireless LAN controllers.

Question 4

Match each automation-related term to the description that best fits it.

Accepted Answer

Idempotent: An operation that can be applied multiple times without changing the result beyond the initial application.. The question requires matching automation-related terms to their correct descriptions. Idempotent means that an operation can be applied multiple times without changing the result after the first application. Declarative is a style where the user defines the desired state and the system determines the steps to achieve it. Imperative is a style where explicit step-by-step instructions are given. Orchestration refers to the automated coordination of multiple systems or services to complete a workflow. Each description aligns precisely with these concepts.

Question 5

Match each API workflow concept to the description that best fits it.

Accepted Answer

REST is a stateless architectural style that uses standard HTTP methods and typically exchanges data in JSON or XML format.. Ly defines REST as a stateless architectural style using standard HTTP methods (GET, POST, PUT, DELETE) and typically exchanging data in JSON or XML. Option B is incorrect because SOAP uses XML, not JSON, and is not lightweight; it is a protocol with strict standards. Option C is incorrect because GraphQL is a query language, not a protocol requiring XML schemas; it allows clients to request specific data, often using JSON. Option D is incorrect because webhooks are callback-based push notifications triggered by events, not periodic polling.

Answer

SOAP is a lightweight protocol that uses JSON for data exchange and is commonly used in RESTful services.

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GraphQL is a protocol that requires strict XML schemas and is used for real-time event notifications.

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Webhooks are a method for polling servers at regular intervals to check for updates.

Question 6

A network engineer sends an HTTP GET request to a controller API and receives status code 401. What does that response indicate?

Accepted Answer

Authentication is required or the token is invalid. HTTP 401 means the request is not authorized because valid authentication credentials were not supplied or were rejected. In practice, this usually means the token is missing, expired, malformed, or otherwise invalid.

Answer

The API endpoint does not exist

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The request was successful but returned an empty body

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The server is overloaded and cannot process the request

Question 7

Match each automation term to the best description.

Accepted Answer

Playbook: A YAML file defining automation tasks in Ansible. In Ansible, a Playbook is a YAML file that defines automation tasks, making option A correct. A Module is a reusable unit of code that performs a specific task, such as managing files or installing software, matching option B. An Inventory is a list of managed nodes (hosts) that Ansible targets, aligning with option C. A Role is a structured way to group tasks, variables, and files for reuse, which corresponds to option D. These terms are central to Ansible automation and should not be confused with data modeling languages or APIs.

Question 8

Which data format is most commonly used in REST APIs because it is lightweight and easy for applications to parse?

Accepted Answer

JSON. JSON is widely used with REST because it is compact, human-readable, and easy for software to parse. It is common in controller APIs and automation workflows.

Answer

YANG

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STP

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TFTP

Question 9

Which data format uses key-value pairs and is commonly returned by REST APIs?

Accepted Answer

JSON. JSON is a lightweight, human-readable data format that uses key-value pairs and is the most common format returned by REST APIs. YANG is a data modeling language used for configuration and state data, not a data format. Syslog is a logging protocol used for system messages. CDP (Cisco Discovery Protocol) is a Layer 2 discovery protocol for Cisco devices. None of these are key-value pair data formats typically returned by REST APIs.

Answer

YANG

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Syslog

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CDP

Question 10

Match each HTTP method to the action it most commonly performs in a REST API.

Accepted Answer

GET: Retrieve a resource or collection of resources.. All listed mappings are correct according to RESTful API conventions. GET retrieves a resource, POST creates a new resource, PUT replaces an existing resource, and PATCH applies a partial update.

Question 11

An API call returns HTTP status code 401. What does that usually mean?

Accepted Answer

Authentication is required or the credentials are invalid. A 401 response means the request lacks valid authentication credentials. The token may be missing, expired, or invalid.

Answer

The resource was moved permanently

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The request was successful but no content was returned

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The server cannot parse JSON

Question 12

Which two statements accurately describe API authentication tokens? (Choose two.)

Accepted Answer

Tokens are often sent in an HTTP header such as Authorization. APIs often use tokens so clients can authenticate without sending usernames and passwords in every call. Tokens are commonly time-limited and are usually placed where the API expects them, such as an HTTP header.

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Tokens are always permanent and never expire

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Tokens require Telnet to be enabled on the device

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A token changes JSON into XML automatically

Question 13

Exhibit: A script sends an HTTP GET request to a controller API endpoint. What is the usual purpose of the GET method?

Accepted Answer

Retrieve information from the resource. In REST-style APIs, GET is normally used to retrieve data from a resource. It is not the standard method for creating or replacing resources.

Answer

Create a brand-new resource

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Replace the entire resource configuration

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Delete the resource

Question 14

A network engineer queries a REST API and receives data in JSON format. Which statement about JSON is correct?

Accepted Answer

JSON stores data as key-value pairs and arrays. JSON is a lightweight data-interchange format that represents data as key-value pairs and arrays. Option A is incorrect because JSON is not a transport protocol; it is a data format exchanged over HTTPS. Option C is incorrect because JSON is platform-agnostic and used by many APIs, not limited to Cisco DNA Center. Option D is incorrect because JSON uses a flexible syntax with colons and brackets, not XML tags.

Answer

JSON is a transport protocol that replaces HTTPS

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JSON can be used only with Cisco DNA Center

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JSON requires XML tags around each object

Question 15

Exhibit: A controller returns an authentication token after a successful API login. Why does the client include that token in later requests?

Accepted Answer

To prove identity and authorization on later API calls. The token proves the client already authenticated and is authorized to use the API. It saves the client from resending credentials on every request and lets the server validate session or access scope.

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To replace the need for an IP address on the client

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To encrypt every packet at Layer 1

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To change HTTP from a stateless protocol to a routing protocol