Which type of device converts digital binary signals from a computer interface into analog patterns to transmit them over older public telephone lines? MCQ with Answer and Explanation

Which type of device converts digital binary signals from a computer interface into analog patterns to transmit them over older public telephone lines?
A. Modem
B. Bridge
C. Switch
D. Router
Answer: Option A
Solution (By JKSSB Mock Tests)
A modem modulates digital data into analog waves for transmission over telephone copper lines, and demodulates them back upon reception.

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Practice More Computer Networking Questions

Question #1
What condition happens on a shared network segment if multiple stations transmit electrical signals simultaneously, causing data frames to collide and warp?
A. Automatic loopback routing
B. Data Collision
C. Signal termination bypass
D. MAC address duplication

Correct Answer: Option B


Explanation:
Data collisions occur when multiple devices transmit signals over a shared medium simultaneously, garbling the data frames.

This question belongs to: Computer Computer Networking
Question #2
What is the range of Class C IP addresses?
A. 224.0.0.0 to 239.255.255.255
B. 128.0.0.0 to 191.255.255.255
C. 1.0.0.0 to 126.255.255.255
D. 192.0.0.0 to 223.255.255.255

Correct Answer: Option D


Explanation:
Class C ranges from 192.0.0.0 to 223.255.255.255.

This question belongs to: Computer Computer Networking
Question #3
What structural feature characterizes a Tree Topology layout?
A. A dense layout where every node features wireless transceivers.
B. A line of nodes with no central coordination nodes.
C. A hierarchical combination of multiple star networks connected back to a central bus backbone line.
D. A closed loop where every machine acts as a repeater.

Correct Answer: Option C


Explanation:
Tree topology integrates star networks into a hierarchical tree pattern, wired back to a primary root bus or centralized switch matrix.

This question belongs to: Computer Computer Networking