ComNet Lecture 1-2

What can you remember from this lecture?

Which of this is not part of data communications systems?

• Receiver

• Antenna

• Transmission medium

• Protocol

Each device can both transmit and receive, but not at the same time.

(a)  

Which of the following is NOT an advantage of star topology?

• Easy to add new devices to the network

• High cable usage and expensive setup cost

• Failure in one cable or device does not affect the entire network

• Centralized management and monitoring

Which of the following is a Layer 3 device?

• Router

• Hub

• Switch

• Modem

What is the full form of MAN?

What is the name of the packet in the Transport Layer?

• Bits

• Frame

• Datagram

• Segment

List the layers of the OSI model from top to bottom

• Physical, Data link, Network, Transport, Session, Presentation, Application

• Application, Transport, Network, Data link, Physical

• Application, Presentation, Session, Transport, Network, Data link, Physical

• Physical, Data link. Network, Transport, Application