200-301 AI and Network Operations Practice Questions

Question 1

Which statement best contrasts YAML with JSON?

Accepted Answer

YAML is commonly more human-readable, while JSON is widely used in APIs. YAML is often chosen because it is relatively easy for humans to read and edit. JSON is also readable but is especially common in API payloads and programmatic data exchange.

Answer

YAML can represent only arrays, while JSON can represent only strings

Answer

JSON requires indentation but YAML requires curly braces

Answer

YAML is a routing protocol and JSON is an access method

Question 2

Which statement accurately describes JSON?

Accepted Answer

It represents data with key-value pairs and arrays. JSON is a lightweight data-interchange format that commonly represents information using objects made of key-value pairs and arrays. It is widely used in APIs and automation workflows.

Answer

It uses angle brackets to define nested elements

Answer

It is a routing protocol for controller communication

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It can be parsed only by Cisco devices

Question 3

What is the role of a YANG model in network programmability?

Accepted Answer

It provides a structured way to model configuration and state data. YANG is a data modeling language used to define structured representations of configuration and operational data. Protocols such as NETCONF and RESTCONF can use those models to read or manipulate network state.

Answer

It encrypts API payloads between a client and server

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It replaces JSON as a transport protocol

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It assigns VLAN IDs dynamically to trunks

Question 4

What is the main benefit of using a data model such as YANG in network automation?

Accepted Answer

It defines structured data that tools can validate and manipulate consistently.. YANG provides a structured, consistent way to define configuration and operational data, which improves automation reliability.

Answer

It eliminates the need for IP addressing on managed devices.

Answer

It replaces TLS for secure API transport.

Answer

It forces all devices to run the same operating system.

Question 5

What is the most likely purpose of a GET request in a RESTful network API?

Accepted Answer

To retrieve data from the server. GET is typically used to retrieve information rather than create or modify it.

Answer

To delete a resource permanently

Answer

To create a new resource with a request body

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To encrypt the API session automatically

Question 6

Which statement best describes YANG in the context of network programmability?

Accepted Answer

YANG is a data modeling language for structured network information. YANG is a data modeling language used to describe the structure of network configuration and operational data. In plain language, it defines how information should be organized so systems and tools can exchange it consistently. That makes it valuable in programmable networking because devices, controllers, and management systems can work from a shared model instead of inventing incompatible structures.

YANG is not a transport protocol, not a cable type, and not a VLAN feature. It belongs to the data-model side of automation and programmability. CCNA questions usually do not expect detailed model-writing ability, but they do expect recognition that YANG helps standardize how network information is represented for automated systems.

Answer

YANG is the encrypted replacement for SSH

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YANG is a trunk encapsulation method

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YANG is an STP election field

Question 7

Which statement best describes an API token in a network automation workflow?

Accepted Answer

A value used to authenticate or authorize API access. An API token is typically a credential or credential-like value used to authenticate or authorize software access to an API. In plain language, it acts like a key that allows a script, application, or automation tool to prove it has permission to talk to the system. This is important because modern automation often depends on secure machine-to-machine access rather than manual interactive logins.

A token is not a routing metric, not a VLAN identifier, and not a physical connection property. It belongs to the security and access-control side of automation. CCNA-level questions usually do not expect deep application-security design, but they do expect recognition that API interactions often need protected credentials or tokens instead of anonymous access.

Answer

A special OSPF metric for controller traffic

Answer

A trunking field used to carry multiple VLANs

Answer

A duplex mode required for REST APIs

Question 8

Which statement best describes the relationship between REST and HTTP methods such as GET and POST?

Accepted Answer

REST commonly uses HTTP methods such as GET and POST to represent actions in API interactions. REST commonly uses standard HTTP methods as part of its interaction model. In plain language, a REST-style API often relies on verbs like GET, POST, PUT, and DELETE to indicate whether the client is reading information, creating something, updating something, or removing something. That is why CCNA automation questions often present REST and HTTP verbs together.

This does not mean REST is the same thing as HTTP itself, but HTTP methods are widely used in RESTful API designs.

Answer

REST requires every request to use only TFTP

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GET and POST are OSPF packet types

Answer

REST replaces all need for authentication

Question 9

Which statement best describes why JSON is common in controller APIs?

Accepted Answer

Because JSON is a lightweight structured format that is easy for software to exchange and parse. JSON is common because it is lightweight, structured, and relatively easy for software systems to parse and generate. In plain language, it gives applications a compact way to exchange organized data. That makes it practical for controllers, dashboards, automation tools, and APIs that need to send structured information frequently.

It is a data format, not an encryption mechanism or routing protocol.

Answer

Because JSON automatically encrypts every API response

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Because JSON replaces the need for HTTP methods

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Because JSON is required only for spanning-tree calculations

Question 10

Which statement best explains why APIs are useful in controller-based networking?

Accepted Answer

They allow external software to interact with the controller in a defined, programmatic way. APIs are useful because they let external software interact with the controller programmatically. In plain language, that means a dashboard, script, automation tool, or orchestration platform can request information or trigger changes without a human manually performing every step.

This is one of the main reasons controller-based designs fit so naturally with automation.

Answer

They replace all need for forwarding devices

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They are used only for Ethernet duplex negotiation

Answer

They make authentication unnecessary

AI and Network Operations