Introduction to Data & Communication Network

What does data communication involve?

• Playing games online

• Exchanging data between devices

• Running software locally

• Watching television

Which of the following is NOT a component of data communication?

• Message

• Receiver

• Antenna

• Protocol

What is the function of a protocol in data communication?

• Display data

• Compress data

• Define transmission rules

• Encrypt hardware

Which mode allows two-way communication but only one direction at a time?

• Simplex

• Duplex

• Full Duplex

• Half Duplex

Which network type is ideal for a home or small office?

• WAN

• PAN

• MAN

• LAN

A network that covers an entire country is known as?

• LAN

• PAN

• WAN

• MAN

What is a characteristic of a PAN (Personal Area Network)?

• Covers multiple cities

• High-speed connection

• Short-range communication

• Requires satellite link

Which of the following is true about a MAN?

• It covers a very small area

• It covers an entire continent

• It covers a city

• It is slower than a PAN

Which topology connects every device to every other device?

• Bus

• Star

• Ring

• Mesh

What is a major disadvantage of star topology?

• High reliability

• Single point of failure

• Difficult to set up

• Requires no cables