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200-901 Network Fundamentals Practice Question

An HTTP/2 connection uses multiple concurrent streams over a single TCP connection. Which feature of HTTP/2 enables this?

⚠ Common exam trap

Cisco often tests the distinction between the enabling mechanism (binary framing) and the resulting capability (multiplexing), so candidates mistakenly choose 'binary framing layer' because it sounds technical, but it is the foundation, not the feature that directly enables concurrency.

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

Multiplexing

Multiplexing is the HTTP/2 feature that allows multiple concurrent streams to share a single TCP connection. This eliminates head-of-line blocking at the application layer by enabling the interleaving of frames from different streams, so a slow response on one stream does not block others.

Answer analysis

Option-by-option breakdown

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

  • Binary framing layer

    Why it's wrong here

    Binary framing is part of the protocol, but multiplexing is the feature that allows concurrent streams.

  • Multiplexing

    Why this is correct

    Correct. Multiplexing allows multiple streams over one TCP connection.

  • Server push

    Why it's wrong here

    Server push proactively sends resources but is not about multiplexing.

  • Header compression (HPACK)

    Why it's wrong here

    HPACK reduces header size but does not enable multiple streams.

Visual reference

Client Server SYN (seq=100) SYN-ACK (seq=200, ack=101) ACK (ack=201) Connection established — data transfer begins

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Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

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