Explain the type of signaling used between two exchanges?

520

Tell me what action is taken when the processor under execution is interrupted by a non-maskable interrupt?

524

Do you know what is the maximal decimal number that can be accommodated in a byte?

502

Do you know what is the nominal voltage required in subscriber loop connected to local exchange?

635

Explain what is the purpose of pc(program counter) in a microprocessor?

540

Tell me what is the max number of satellite hops allowed in voice communication?

518

Explain at which frequency voice is sampled?

507