CompTIA
CN0-201 · Question #11
When a phone is lifted off-hook, it connects the two wires causing an electrical signal to flow from the phone exchange to the phone. What is this electrical signal called?
The correct answer is C. Loop start signal. See the full explanation below for the reasoning.
Question
When a phone is lifted off-hook, it connects the two wires causing an electrical signal to flow from the phone exchange to the phone. What is this electrical signal called?
Options
- AOff-hook signal
- BGround start signal
- CLoop start signal
- DOn-hook signal
How the community answered
(31 responses)- A13% (4)
- B3% (1)
- C77% (24)
- D6% (2)
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