200-901 Network Fundamentals Practice Question
In HTTP/2, which feature allows multiple concurrent requests and responses to be interleaved on a single connection, improving performance?
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
HTTP/2 multiplexing allows multiple streams to be sent concurrently over a single TCP connection, reducing head-of-line blocking.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Header compression (HPACK)
Why it's wrong here
HPACK compresses header fields to cut overhead across requests; it does not interleave concurrent request and response streams. It is tempting because it is a headline HTTP/2 performance feature, and would be correct if the question asked how HTTP/2 reduces redundant header bytes on repeated requests.
- ✗
Server push
Why it's wrong here
Server push lets the server send resources the client has not requested; it does not interleave multiple concurrent request/response streams. It is tempting because it improves page load performance, and would be correct if the question asked how HTTP/2 proactively delivers assets before the client asks.
- ✓
Multiplexing
Why this is correct
HTTP/2 multiplexing lets many request/response streams share one TCP connection, interleaving frames so no stream blocks another. This removes HTTP/1.1's head-of-line queuing per connection, directly satisfying the stem's requirement for concurrent, interleaved exchanges on a single connection.
- ✗
Binary framing
Why it's wrong here
Binary framing splits messages into frames, but it is the stream multiplexing layer that interleaves concurrent requests; framing alone does not provide that concurrency. It is tempting because binary framing underpins HTTP/2's efficiency, and would be the answer if the question asked how HTTP/2 encodes messages compactly.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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