CCNA AI and Network Operations Practice Test 8 — 15 Questions

Question 1

Match each automation or API term to its most accurate role.

Accepted Answer

REST: Architectural style for designing networked applications using HTTP. These pairings correctly associate each automation/API term with its primary role.

Question 2

Match each basic controller or API term to its most accurate meaning.

Accepted Answer

REST API: Uses HTTP methods to perform CRUD operations on network devices. These pairs match controller or API terms correctly. REST API uses HTTP, controller centralizes management, northbound/southbound interfaces define directions, JSON is common data format, and YANG models network data.

Answer

Controller: A centralized software that manages network devices and policies

Answer

Northbound interface: Interface between controller and applications

Answer

JSON: A data format used for exchanging information between systems

Question 3

Why is JSON often preferred over completely unstructured text in API responses?

Accepted Answer

Because JSON provides structured, machine-readable data that software can parse consistently.. JSON is preferred because it gives software a predictable structure to parse. In practical terms, an application can look for keys, values, arrays, and objects instead of trying to interpret a free-form text paragraph meant mainly for human readers. That makes programmatic processing far more reliable. This is one of the main reasons JSON is so common in controller APIs and automation tools. It is about structure and machine readability, not encryption, authentication, or HTTPS.

Answer

Because JSON automatically encrypts the payload.

Answer

Because JSON replaces the need for authentication.

Answer

Because JSON is the same thing as HTTPS.

Question 4

Match each REST-style method to the action it most commonly represents.

Accepted Answer

GET - Retrieve, POST - Create, PUT - Replace, PATCH - Partial Modify, DELETE - Remove, HEAD - Headers only. REST methods are standardized: GET retrieves, POST creates, PUT replaces, PATCH partially modifies, DELETE removes, and HEAD retrieves only headers.

Answer

GET - Retrieve, POST - Update, PUT - Create, PATCH - Delete, DELETE - Replace, HEAD - Headers only

Answer

GET - Retrieve, POST - Create, PUT - Update, PATCH - Replace, DELETE - Remove, HEAD - Headers only

Answer

GET - Retrieve, POST - Create, PUT - Replace, PATCH - Update, DELETE - Remove, HEAD - Headers only

Question 5

Match each data-structure term to its most accurate meaning.

Accepted Answer

Key: Field name. These pairs correctly match data-structure terms to their definitions. Array uses indices, hash table uses key-value mapping, stack is LIFO, queue is FIFO, linked list uses nodes with references, and tree is hierarchical.

Question 6

Which two statements accurately describe JSON in network automation contexts?

Accepted Answer

It is a structured data format that software can parse reliably.. JSON is widely used in network automation because it provides structured, machine-readable data. In practical terms, software can reliably identify keys, values, objects, and arrays without having to guess meaning from free-form text. That makes it a common format in modern APIs.

The important point is that JSON is a data format. It is not the API itself and it is not the secure transport that carries the data.

Answer

It is the encryption protocol that protects the API session.

Answer

It replaces the need for authentication.

Answer

It is the same thing as a southbound API.

Question 7

Which two statements accurately describe software-defined networking and network virtualization concepts at a basic CCNA level?

Accepted Answer

SDN is associated with more centralized or programmable control of network behavior.. At a basic level, these concepts point toward more abstracted, software-driven ways of controlling or delivering networking capabilities. SDN is associated with more centralized or programmable control behavior. NFV is associated with delivering network functions in virtualized software form instead of relying only on fixed-purpose hardware.

The goal here is conceptual recognition, not deep architectural implementation detail.

Answer

Both terms are just new names for subnet masks.

Answer

Both terms replace the need for routing protocols completely.

Answer

Both terms refer only to wireless client roaming.

Question 8

Match each term to the most appropriate description in an API context.

Accepted Answer

Endpoint: The URL where an API can be accessed. These pairings define key API terms with their descriptions.

Question 9

A JSON response from a controller contains a list of interfaces, each with its own name and status fields. Which JSON structure is most likely used to represent that list?

Accepted Answer

An array of objects. The most likely structure is an array containing objects. In practical terms, an array is the natural way to represent a list of similar items, and each item can then be an object with named fields such as name and status. This is a very common pattern in API payloads.

The question is testing structure recognition, not programming syntax mastery.

Answer

A single scalar string only

Answer

A wildcard mask

Answer

A route metric table

Question 10

Drag each automation or API concept from the left to its corresponding description on the right. Not all descriptions are used.

Concepts:
- Northbound API
- Southbound API
- JSON
- HTTPS

Accepted Answer

Application-facing interface to the controller. Northbound API: the application-facing interface of an SDN controller, allowing apps to request services. Southbound API: the interface that enables the controller to configure managed devices, such as OpenFlow. JSON: a structured data format using key/value pairs and arrays, lightweight and machine‑friendly. HTTPS: secure, encrypted transport for API communications, protecting data in transit. Distractors: 'Human-readable serialization format' describes YAML, not JSON or APIs. 'Protocol for network device configuration' might refer to NETCONF or CLI, not HTTPS or the APIs listed.

Question 11

Match each programmability term to its most accurate description.

Accepted Answer

API: A set of protocols and tools for building software applications, specifying how components should interact.. Each term is correctly matched with its standard definition in software development and API contexts.

Answer

API: A programming language used to write automation scripts for network devices.

Answer

API: A hardware component that connects network devices to the internet.

Answer

API: A security protocol that encrypts data transmitted over a network.

Question 12

Which two statements accurately describe why APIs and human-oriented CLIs are both still useful in network operations?

Accepted Answer

APIs are useful for structured, repeatable software-driven interaction.. APIs and CLIs are both useful because they serve different operational strengths. In practical terms, APIs are better for repeatable software interaction and structured automation, while CLIs remain valuable for direct human troubleshooting and ad hoc inspection. Mature environments often use both depending on the task.

This is not an either-or question. It is about fit for purpose.

Answer

APIs make all CLIs obsolete in every situation.

Answer

CLIs are only useful for configuring initial device settings and cannot be used for monitoring.

Answer

Neither interface should ever return structured data.

Question 13

A REST API call uses the GET method against a device inventory endpoint. What is the most likely intent of the call?

Accepted Answer

To retrieve information from the endpoint.. The most likely intent is to retrieve information, not to create or delete it. In practical terms, GET is commonly used when a client wants to read state or inventory data from an API endpoint. This is one of the most basic REST-style concepts in network automation.

The key is to associate method semantics with likely operational intent.

Answer

To delete the endpoint from the controller.

Answer

To replace the endpoint with a new resource.

Answer

To force the device into PPP mode.

Question 14

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

Answer

POST - Retrieve a resource

Answer

PUT - Partially update a resource

Question 15

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.

Answer

DELETE

Answer

POST

Answer

PUT