Which device converts digital computer data into analog waveforms for transmission over older telephone lines, and decodes them back upon arrival? MCQ with Answer and Explanation
Which device converts digital computer data into analog waveforms for transmission over older telephone lines, and decodes them back upon arrival?
A. Switch
B. Router
C. Bridge
D. Modem
Answer: Option D
Solution (By JKSSB Mock Tests)
A modem modulates digital signals into analog waves for transmission over phone lines, and demodulates them back into digital data at the receiving end.
Which topology design provides an exceptionally robust environment where the failure of any single connection line affects only the device connected to that specific line?
Explanation:
In a star topology, each node uses an isolated cable run to connect to a central switch. A break in one cable only disconnects that specific device.
Which network topology layout connects adjacent devices in a continuous line with no central controller, terminating cleanly at two distinct endpoints?
Explanation:
A Class C network has 256 addresses total, but 2 are reserved (one for the network ID and one for the broadcast address), leaving 254 usable host slots.
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