alleryStart learning →UDP is preferred over TCP for applications that need
Aguaranteed delivery and ordering
Blow latency, can tolerate packet loss
Cencrypted traffic
Dlarge file transfers
Answer & Solution
Correct answer: B. low latency, can tolerate packet loss
1. UDP characteristics (RFC 1180 §6):
- CONNECTIONLESS — no handshake, send-and-forget
- SMALL HEADER (8 bytes) — low overhead
- NO reliability, ordering, or congestion control
2. PERFECT for applications where:
- Low latency matters more than reliability (gaming, VoIP, real-time streaming)
- Small request/response (DNS — one packet each way)
- Multicast/broadcast (TCP doesn't support it)
3. Option A describes TCP. Option C is unrelated to TCP vs UDP. Option D usually wants TCP for reliability.
_Source: RFC 1180 "A TCP/IP Tutorial", §6 (User Datagram Protocol)._
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