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AI and Network OperationshardMultiple ChoiceObjective-mapped

CCNA AI and Network Operations Practice Question

Why is HTTPS preferred over HTTP when accessing sensitive controller APIs?

⚠ Common exam trap

A frequent exam trap is believing that HTTPS removes the need for tokens or credentials in API access. Some candidates incorrectly assume that because HTTPS encrypts traffic, authentication is unnecessary. However, HTTPS only secures the transport layer and does not provide access control. Another trap is thinking HTTP cannot carry API requests, which is false since HTTP can transmit API data but without encryption. Also, confusing the data format with the transport protocol leads to the incorrect belief that JSON requires HTTPS, when in fact JSON can be sent over any protocol. Understanding these distinctions is crucial to avoid selecting incorrect answers.

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

Because HTTPS encrypts the API traffic in transit.

HTTPS is preferred because it encrypts the traffic in transit. In practical terms, sensitive controller APIs may carry tokens, credentials, operational details, and configuration data. Sending that information over plain HTTP would expose it to interception on the network. HTTPS reduces that risk by protecting the session. This does not make HTTPS a replacement for authentication. It is a transport-security choice that works alongside access control, not instead of it.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • Because HTTPS encrypts the API traffic in transit.

    Why this is correct

    HTTPS wraps the API payload in TLS/SSL encryption, so any sensitive data transmitted over the network—such as passwords, tokens, or personal information—remains unreadable to anyone who intercepts the packets. This prevents eavesdropping and man-in-the-middle attacks, which is why secure communication is mandatory for sensitive operations. In contrast, HTTP sends all data as plaintext, leaving it exposed on shared networks.

  • Because HTTPS removes the need for tokens and credentials.

    Why it's wrong here

    HTTPS only secures the transport channel; it does not replace authentication or authorization mechanisms. APIs still require credentials like API keys, OAuth tokens, or certificates to verify the identity of the caller and enforce access control. The encryption simply shields those credentials from being captured while in transit, but the client must still present them for every request.

    When this WOULD be correct

    In a different question that asks about the advantages of HTTPS in a context where security measures are being discussed, and specifically mentions that HTTPS can eliminate the need for certain types of insecure credentials, this option could be correct. For example, if the question stated that HTTPS allows for secure session management without exposing tokens.

  • Because HTTPS is the only way JSON can be transmitted.

    Why it's wrong here

    JSON is a syntax for structuring data that is completely agnostic to the underlying network protocol. It can be serialized and transmitted over HTTPS, plain HTTP, WebSockets, or even stored in files without any reliance on TLS. HTTPS is just one of many transports capable of delivering JSON; it is neither a requirement nor unique to the format.

    When this WOULD be correct

    In a different exam scenario, if the question specifically stated that JSON can only be transmitted securely, or if it asked about protocols that support JSON exclusively, then this option could be correct. For example, a question could ask, 'Which protocol is exclusively used for transmitting JSON data?'

  • Because HTTP cannot carry API requests at all.

    Why it's wrong here

    HTTP is fully capable of transmitting API requests; in fact, many public APIs still offer HTTP endpoints for compatibility. The problem is that HTTP does not encrypt the request or response body, so any sensitive payload can be read or modified by an attacker on the network path. Thus, the limitation is a lack of confidentiality and integrity, not an inability to carry API traffic.

    When this WOULD be correct

    In a question that specifically asks about the capabilities of HTTP versus other protocols, such as when comparing HTTP to a protocol that does not support API requests at all, this option could be correct. For example, if the question stated, 'Which protocol cannot handle API requests?' then D would be the correct answer.

Option-by-option analysis

Why each answer is right or wrong

Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The 200-301 exam frequently reuses these exact scenarios with slightly different constraints.

Because HTTPS encrypts the API traffic in transit.Correct answer

Why this is correct

HTTPS wraps the API payload in TLS/SSL encryption, so any sensitive data transmitted over the network—such as passwords, tokens, or personal information—remains unreadable to anyone who intercepts the packets. This prevents eavesdropping and man-in-the-middle attacks, which is why secure communication is mandatory for sensitive operations. In contrast, HTTP sends all data as plaintext, leaving it exposed on shared networks.

Because HTTPS removes the need for tokens and credentials.Wrong answer — click to see why

Why this is wrong here

This option is incorrect because HTTPS does not eliminate the need for tokens and credentials; it only secures the transmission of data. Tokens and credentials are still essential for authentication and authorization in API requests.

★ When this WOULD be the correct answer

In a different question that asks about the advantages of HTTPS in a context where security measures are being discussed, and specifically mentions that HTTPS can eliminate the need for certain types of insecure credentials, this option could be correct. For example, if the question stated that HTTPS allows for secure session management without exposing tokens.

Why candidates choose this

Candidates may find this option tempting because they might confuse the security features of HTTPS with the overall simplification of authentication processes, leading them to believe that HTTPS inherently negates the need for any credentials.

Because HTTPS is the only way JSON can be transmitted.Wrong answer — click to see why

Why this is wrong here

This option is wrong because HTTPS does not dictate the format of data transmission; JSON can be transmitted over both HTTP and HTTPS. The choice of protocol does not limit the data formats used in API requests.

★ When this WOULD be the correct answer

In a different exam scenario, if the question specifically stated that JSON can only be transmitted securely, or if it asked about protocols that support JSON exclusively, then this option could be correct. For example, a question could ask, 'Which protocol is exclusively used for transmitting JSON data?'

Why candidates choose this

Candidates may choose this option due to a misunderstanding of how protocols work and the assumption that security protocols inherently dictate data formats, leading them to conflate HTTPS with specific data types.

Because HTTP cannot carry API requests at all.Wrong answer — click to see why

Why this is wrong here

This option is wrong because HTTP can indeed carry API requests; it is a foundational protocol for web communication. The statement incorrectly suggests that HTTP is entirely incapable of handling API requests, which is not true.

★ When this WOULD be the correct answer

In a question that specifically asks about the capabilities of HTTP versus other protocols, such as when comparing HTTP to a protocol that does not support API requests at all, this option could be correct. For example, if the question stated, 'Which protocol cannot handle API requests?' then D would be the correct answer.

Why candidates choose this

Candidates may choose this option due to a misunderstanding of HTTP's capabilities, possibly influenced by discussions about security where HTTPS is emphasized over HTTP, leading to the false assumption that HTTP is entirely ineffective for APIs.

Analysis generated from the official 200-301blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”

Quick reference

OSI Model Reference

LayerNamePDUKey Protocols / Devices
7ApplicationDataHTTP, HTTPS, DNS, SMTP, FTP, SSH
6PresentationDataTLS / SSL, JPEG, ASCII encoding
5SessionDataNetBIOS, RPC, SIP
4TransportSegment / DatagramTCP, UDP
3NetworkPacketIP, ICMP, OSPF — Routers
2Data LinkFrameEthernet, Wi-Fi, PPP — Switches, Bridges
1PhysicalBitsCables, NICs, Hubs, Repeaters

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Last reviewed: May 17, 2026

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