Informatics Practices
Assertion. MODEM stands for modulator-demodulator.
Reason. 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.
Computer Networks
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Answer
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.
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Related Questions
Assertion. The tree topology is a hybrid topology created through a combination of Bus and Star topologies.
Reason. In tree topologies, at a time either bus topology transmission is followed or star topology transmission takes place but never both.
Assertion. The bus and star topologies are widely used topologies.
Reason. Bus topology is the simplest topology and star topology is more robust comparatively.
Assertion. A modem is a communication device that works on the principle of converting digital data to analog data and vice versa.
Reason. Modulation is a process of converting digital data to analog form and Demodulation is a process of converting analog data to digital form.
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Reason. An active hub is capable of amplifying the signal during transmission while a passive hub merely lets the signal pass through it.