DDC Q3-3C

Which of the following is a guided transmission medium?

• Microwave

• Infrared

• Fiber optic

• Radio wave

Which of the following is an unguided transmission medium?

• Twisted pair cable

• Microwave

• Coaxial cable

• Optical fiber

Which factor refers to the loss of signal energy as it propagates?

• Bandwidth

• Radiation

• Noise absorption

• Attenuation

In broadcast transmission, a message sent by one machine is:

• Received only by the destination

• Received by all machines in the network

• Ignored by the server

• Sent only to a subset of machines

Which transmission method sends data in real-time, requiring synchronization between sender and receiver?

• Serial

• Parallel

• Asynchronous

• Synchronous

Transmission media is also called a communication channel.

• True

• False

Radiowaves are directional and require precise antenna alignment.

• True

• False

Infrared communication is limited to short distances and cannot pass through obstacles.

• True

• False

Parallel transmission is more suitable for long-distance communication than serial transmission.

• True

• False

Broadcast networks allow multicasting.

• True

• False