200-901 Network Fundamentals Practice Question
Which TWO of the following are benefits of using UDP over TCP for real-time applications?
⚠ Common exam trap
Cisco often tests the misconception that 'reliable' means 'better' for all applications, but candidates must recognize that real-time apps prioritize low latency over reliability, making UDP's lack of guarantees a feature, not a flaw.
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
✓
Lower latency due to no connection setup
UDP does not require a three-way handshake (SYN, SYN-ACK, ACK) before data transmission, eliminating the connection setup latency inherent in TCP. This makes UDP ideal for real-time applications like VoIP or video streaming where low delay is critical.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Lower latency due to no connection setup
Why this is correct
UDP is connectionless, reducing latency.
- ✗
Guaranteed delivery of all packets
Why it's wrong here
UDP does not guarantee delivery.
- ✓
Reduced overhead from smaller header size
Why this is correct
UDP header is 8 bytes vs TCP's 20+.
- ✗
In-order packet delivery
Why it's wrong here
UDP does not guarantee order.
- ✗
Congestion control to avoid network overload
Why it's wrong here
UDP lacks congestion control.
Visual reference
Go deeper
Related to this question
About these practice questions
This 200-901 question is part of Courseiva's 989-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
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.