220-801 · Question #152
Which of the following Internet connection types has the HIGHEST latency?
The correct answer is B. Satellite. Satellite Internet has the highest latency of the options listed because the signal must travel roughly 22,000 miles to a geosynchronous orbit satellite and back, introducing inherent round-trip delays of 500ms or more.
Question
Options
- AWiMAX
- BSatellite
- CFiber
- DDial-up
How the community answered
(33 responses)- A3% (1)
- B88% (29)
- C3% (1)
- D6% (2)
Why each option
Satellite Internet has the highest latency of the options listed because the signal must travel roughly 22,000 miles to a geosynchronous orbit satellite and back, introducing inherent round-trip delays of 500ms or more.
WiMAX uses ground-based towers similar to cellular networks, resulting in latency typically in the 30-70ms range, far lower than satellite.
Geostationary satellites orbit at approximately 35,786 km (22,236 miles) above Earth. A single round-trip signal must travel this distance four times (client to satellite, satellite to ground station, return path), resulting in minimum latency of approximately 500-600ms. This physical distance constraint cannot be overcome by increased bandwidth or better equipment, making satellite the highest-latency option among all common Internet connection types.
Fiber optic connections transmit data at near the speed of light through glass, resulting in extremely low latency typically under 5ms for local connections.
Dial-up connections have higher latency than fiber or cable (typically 100-200ms) due to modem negotiation and narrow bandwidth, but still significantly lower than the 500ms+ inherent to satellite connections.
Concept tested: Satellite Internet latency due to orbital distance
Source: https://learn.microsoft.com/en-us/azure/networking/azure-network-latency
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