ITPEC IP April 2021 Question 11
Which of the following is an appropriate explanation of a hot plug?
Explanation
Attaching or detaching a peripheral device while the PC stays on — that is hot plugging.
With hot plug support the OS detects a device as it is connected, loads its driver, and releases it when it is removed, with no shutdown or restart. USB is the familiar example.
Answer (a)
Why not others:
- •(b) — software added later to extend an application's functions is a plug-in
- •(c) — powering a peripheral through its connecting cable is bus power (as with USB), not hot plugging
- •(d) — running a specific program and judging performance by its processing time is a benchmark
Key rule: Hot plug means changing connected devices while the power is on; plug and play means the OS configures a newly connected device automatically. USB supports both.
Computer Component · AI-written, may contain errors
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