CBSE Class 12 Informatics Practices
Question 9 of 18
Practice Paper — Question 17
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Question Assertion (A). MODEM stands for modulator-demodulator.
Reasoning (R). It is a computer hardware device that converts data from a digital format to analog and vice versa.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Both A and R are true and R is the correct explanation of A.
Explanation
MODEM stands for modulator-demodulator. It is a computer hardware device that allows connecting and communicating with other computers via telephone lines. It converts digital data from a computer into analog signals suitable for transmission over telephone lines, and vice versa, converting incoming analog signals back into digital data that the computer can understand.