What does a wireless system refer to?

• A network that uses physical cables to transmit data.

• A type of system that does not utilize electromagnetic waves.

• A communication system that transmits data without physical cables.

• A system that requires wired connections for communication.

What do wireless systems utilize to transmit signals between devices?

• • Fiber optic cables

• • Electromagnetic waves or radio frequencies

• • Ethernet cables

• • Satellite connections

What type of channel is used in a wireless communication medium?

• • A stable and predictable channel

• • A channel with unlimited bandwidth

• • A private, non-broadcast channel

• • A noisy and unpredictable channel

Which of the following statements is true about a wireless communication medium?

• • The spectrum is usually regulated and bandwidth is limited.

• • More users result in more bandwidth per user.

• • It has lower equipment costs compared to wired systems.

• • It does not require a backbone system to function properly.

What are the benefits of digital modulation techniques in communication systems?

• • They reduce the number of communication channels.

• • They permit the multiplication of the number of communication channels.

• • They only work with analog circuits.

• • They are incompatible with SAW components.