What does the term "telecommunication" mean?

• Exchange of data between devices

• Communication at a distance

• Data transfer through radio waves

• Digital communication between computers

Which of the following is a characteristic of digital communication?

• Uses only analog data

• Always uses binary (0s and 1s) form

• Can use both digital and analog data

• Operates only in wired networks

What is the medium of communication in data communications?

• Transmission of data through the air

• Any medium such as wire or optical fibers

• Only traditional phone lines

• Only optical fibers

Which organization is responsible for standardizing data communications?

• IEEE

• ISO

• ITU

• All of the above

Which of the following describes the simplex mode of data transmission?

• Data can be sent in both directions simultaneously

• Data can be sent in both directions, but only one at a time

• Data is sent in one direction only

• Data is exchanged between multiple devices

In a star topology, what is the central connecting device?

• A hub or switch

• A router

• A computer

• A bus cable

What type of network is designed for connectivity over long distances?

• Local Area Network (LAN)

• Wide Area Network (WAN)

• Metropolitan Area Network (MAN)

• Wireless Network

Which topology connects all devices in a network with each other directly?

• Star topology

• Ring topology

• Bus topology

• Mesh topology

What is an essential element of a data communication protocol?

• Data rate

• Security

• Syntax

• Cable type

What does "throughput" measure in a network?

• Time delay between data transfers

• Data protection level

• Rate of successful data delivery over a network

• Number of devices in the network