CompTIA
N10-005 · Question #403
N10-005 Question #403: Real Exam Question with Answer & Explanation
The correct answer is C: Satellite. Satellite WAN connections have the highest latency due to the enormous distance signals must travel to reach geostationary orbit and back.
Question
Which of the following WAN technologies has the highest latency?
Options
- APOTS
- BCable
- CSatellite
- DDSL
Explanation
Satellite WAN connections have the highest latency due to the enormous distance signals must travel to reach geostationary orbit and back.
Common mistakes.
- A. POTS (Plain Old Telephone Service) dial-up connections are slow in bandwidth but have terrestrial latency measured in tens of milliseconds, far lower than satellite.
- B. Cable internet uses terrestrial coaxial infrastructure with latency typically under 20 ms, which is much lower than satellite.
- D. DSL uses existing copper telephone lines with terrestrial latency typically under 30 ms, which is much lower than satellite.
Concept tested. Satellite WAN high latency due to propagation distance
Reference. https://www.fcc.gov/consumers/guides/getting-broadband-qa
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