200-901 Network Fundamentals Practice Question
A developer is building a real-time video streaming application that must minimize delay, even if some packets are lost. Which transport protocol is most appropriate, and why?
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
✓
UDP, because it has lower overhead and no retransmission delay.
UDP is suitable for real-time streaming because it is connectionless and does not retransmit lost packets, reducing latency. TCP's retransmission and ordering would cause delays.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
TCP, because it provides flow control to avoid congestion.
Why it's wrong here
Flow control can introduce delay.
- ✗
UDP, because it guarantees packet delivery.
Why it's wrong here
UDP does not guarantee delivery.
- ✗
TCP, because it ensures all packets arrive in order.
Why it's wrong here
Ordered delivery is not critical for real-time video; delay is more important.
- ✓
UDP, because it has lower overhead and no retransmission delay.
Why this is correct
UDP minimizes delay, which is crucial for real-time streaming.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 200-901 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 200-901 exam.