CCNA AI and Network Operations Practice Test 2 — 15 Questions

Question 1

Which statement best describes the role of a token in an API-based workflow?

Accepted Answer

A token is a value used to help authenticate or authorize API requests.. A token is a credential-like value used to help control access to the API. In plain language, the client presents the token so the system can determine whether the request should be accepted, often without resending the raw username and password every time. This makes repeated programmatic access more practical while still fitting into an access-control model.

A token is not a VLAN concept, a routing metric, or a transport protocol. The correct answer is the one centered on access control for API interaction.

Answer

A token is the OSPF cost of the controller link.

Answer

A token is the native VLAN for secure traffic.

Answer

A token replaces the need for HTTPS.

Question 2

Which statement best describes the purpose of HTTPS in controller-based API communication?

Accepted Answer

It provides encrypted transport for API requests and responses.. HTTPS provides encrypted transport for API communication. In plain language, it protects data such as tokens, credentials, requests, and responses while they cross the network. This matters because controller APIs often carry sensitive operational and configuration information that should not be exposed in clear text.

HTTPS is not the same thing as JSON or the controller itself. The correct answer is the one focused on secure transport.

Answer

It is the data format used inside every API payload.

Answer

It replaces authentication and authorization entirely.

Answer

It is the routing protocol used by the controller.

Question 3

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

Accepted Answer

They provide a defined interface through which software can retrieve data or request changes.. APIs are useful because they provide a defined software interface for tools and applications to retrieve data or request changes. In practical terms, that means dashboards, orchestration systems, and scripts can interact with the controller in a predictable way. This is much more automation-friendly than relying entirely on manual, device-by-device operation.

At the CCNA level, the key idea is not deep programming theory. It is that APIs make controlled software interaction possible. That is why they matter in controller-based environments.

Answer

They replace all forwarding devices in the network.

Answer

They remove the need for authentication and authorization.

Answer

They are the same thing as switch trunks.

Question 4

Which statement best describes why tokens are commonly used in API-based workflows?

Accepted Answer

They provide a controlled way for clients to authenticate or authorize repeated API access.. Tokens are commonly used because they let clients present a controlled access value instead of sending raw credentials repeatedly with every request. In practical terms, that makes repeated software-driven interaction more manageable while still fitting into an authentication and authorization model.

This does not mean tokens replace transport security or remove the need for access control. It means they are a common mechanism for managing API access in a practical way.

Answer

They eliminate the need for HTTPS entirely.

Answer

They are the same thing as router metrics.

Answer

They turn API data into VLAN tags.

Question 5

Which statement best explains why JSON is often easier for software tools to process than free-form text?

Accepted Answer

Because JSON provides structured data with predictable fields that software can parse consistently.. JSON is easier for software tools to process because it has predictable structure. In practical terms, the tool can look for keys, values, objects, and arrays instead of trying to infer meaning from loose human-oriented wording. That makes parsing more reliable and repeatable.

This is one of the reasons JSON is so common in APIs. It is about machine readability, not about encryption or routing.

Answer

Because JSON automatically authenticates the API client.

Answer

Because free-form text cannot be read by humans.

Answer

Because JSON replaces HTTPS.

Question 6

Which statement best describes a southbound API in a controller-based architecture at a conceptual level?

Accepted Answer

It is associated with communication between the controller and the devices or infrastructure it manages.. At a conceptual level, a southbound API is associated with communication between the controller and the network infrastructure it manages. In practical terms, if northbound APIs are how applications talk to the controller, southbound APIs describe how the controller interacts downward with devices or the forwarding infrastructure.

The CCNA emphasis here is basic directional understanding, not deep vendor-specific protocol detail.

Answer

It is the client-visible WLAN name.

Answer

It is the same thing as a default route.

Answer

It is used only to generate IPv6 addresses with EUI-64.

Question 7

Which statement best describes why a REST API is easier for software to use than a human-oriented CLI screen output?

Accepted Answer

Because a REST API provides structured, predictable interaction better suited for software integration. A REST API is easier for software to use because it provides structured requests and responses in predictable formats. In practical terms, software can interact with known endpoints and parse returned data more reliably than trying to interpret changing screen layouts designed for humans. This improves automation consistency and reduces parsing fragility.

This does not mean the CLI has no value. It means the API is usually the cleaner interface for programmatic integration.

Answer

Because CLI output cannot be read by humans

Answer

Because REST APIs remove the need for authentication

Answer

Because CLI output can be used only on wireless controllers

Question 8

Which statement best describes NFV at a conceptual level?

Accepted Answer

It is associated with delivering network functions in software-based or virtualized form.. NFV, or network functions virtualization, is associated with implementing network functions in software rather than relying only on fixed dedicated hardware appliances. In practical terms, functions such as routing, firewalls, or other services can be delivered in more virtualized or software-based ways.

This is a conceptual modernization topic. The key point is virtualization of the function, not just ordinary routing.

Answer

It is the same thing as PPP over Ethernet.

Answer

It is the process used by STP to elect a root bridge.

Answer

It is a replacement for DHCP host configuration.

Question 9

Which statement best describes software-defined networking at a conceptual level?

Accepted Answer

It emphasizes more centralized or programmable control of network behavior.. Software-defined networking is associated with separating or centralizing aspects of control and policy from simple per-device manual configuration. In practical terms, SDN emphasizes more programmatic, centralized, or controller-driven ways of defining how the network should behave. The exact implementation can vary, but the core idea is more abstracted and centrally influenced control.

At CCNA level, the emphasis is conceptual rather than vendor-specific.

Answer

It is a replacement for IPv4 subnet masks.

Answer

It is the same thing as a guest SSID.

Answer

It is a serial WAN encapsulation like PPP.

Question 10

Which statement best describes why APIs are valuable in automation even when a CLI is still available?

Accepted Answer

They provide a structured interface that is better suited to repeatable software-driven interaction.. APIs are valuable because they offer a structured and predictable interface for software-driven interaction, even if the CLI remains useful for human administrators. In practical terms, an engineer may still troubleshoot with the CLI, but automation tools benefit from consistent endpoints and machine-readable data.

This is not about replacing humans entirely. It is about choosing the best interface for repeatable programmatic workflows.

Answer

They make CLIs illegal to use in enterprise environments.

Answer

They remove all need for authentication or authorization.

Answer

They automatically convert JSON into routing metrics.

Question 11

Which statement best describes why HTTPS is commonly used together with APIs in network automation?

Accepted Answer

Because HTTPS provides secure transport for API communication.. HTTPS is commonly used with APIs because it provides a secure transport channel for the API interaction. In practical terms, the API defines how the client and server communicate logically, while HTTPS helps protect that communication in transit. This combination supports safer automation in real environments.

The key is to separate the API concept from the transport-security concept.

Answer

Because HTTPS is the same thing as JSON.

Answer

Because APIs cannot function without wireless controllers.

Answer

Because HTTPS automatically creates PPP sessions.

Question 12

Which statement best explains why structured API responses are valuable for network dashboards and automation systems?

Accepted Answer

They let software reliably extract known fields and values without guessing from human-formatted text.. Structured API responses are valuable because they let software process returned information consistently. In practical terms, a dashboard or automation system can extract fields such as status, interface names, counters, or alarms without guessing from free-form text. That makes automation more reliable and easier to maintain.

This is one of the main reasons structured formats and APIs are so common in modern network operations tools.

Answer

They remove the need for authentication tokens.

Answer

They automatically create WAN tunnels between sites.

Answer

They replace the need for IP routing tables.

Question 13

Which statement best describes why machine-readable state data is valuable for automation-based assurance?

Accepted Answer

Because software can evaluate and compare state consistently across many devices.. Machine-readable state data is valuable because it allows software to evaluate current conditions consistently and at scale. In practical terms, a tool can compare status, counters, and configuration state across many devices without relying on fragile text scraping or manual interpretation. That makes automated assurance and reporting much more practical.

This is one of the core operational benefits of structured telemetry and APIs.

Answer

Because it removes the need for any network design.

Answer

Because it forces all devices to use PPP.

Answer

Because it disables the CLI permanently.

Question 14

Which statement best describes YANG at a basic CCNA automation level?

Accepted Answer

It is a data-modeling language used to describe network configuration and state.. YANG is a data-modeling language used to describe network configuration and state in a structured way. In practical terms, it helps define how information should be represented for more programmatic and model-driven interaction with network devices. It is part of the broader shift toward structured automation.

The important thing at this level is to recognize YANG as a modeling concept, not as a transport protocol or a routing protocol.

Answer

It is the secure transport protocol used instead of HTTPS.

Answer

It is the BGP path-selection algorithm.

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It is the default CAPWAP discovery message.

Question 15

Which statement best describes why tokens are commonly used in API-based automation environments?

Accepted Answer

They provide an access-related value the client can use when making API requests.. Tokens are commonly used because they provide an access-related value that a client can present when interacting with an API. In practical terms, they help the platform determine whether the client is allowed to make the request. They are part of access control, not the data model itself.

This is a basic API-access concept and an important one for controller-driven automation workflows.

Answer

They replace JSON as the structured payload format.

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They are the same thing as a default route.

Answer

They are required only for STP root election.