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Ch 6 - Computer Networks Exam Questions and Answers
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Ch 6 - Computer Networks Exam Questions and Answers
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Ch 6 - Computer Networks ExamQuestions and Answers
1.Describe the purpose of a NIC. (2 marks) - Answer-Allow a computer to connect to a
network by sending and receiving electrical signals.
2.Distinguish between a network hub and a network switch. (4 marks) - Answer-A hub
sends data to all connected ports; a switch sends data to specific addresses.
3.Describe three ways in which security can be implemented on a wireless access
point.
(3 marks) - Answer-Hide SSID, restrict access to specific MAC addresses, encryption
4.Describe the purpose of a router. (2 marks) - Answer-Directs data packets, to their
destinations.
5.What is a network bridge? (2 marks) - Answer-A hardware device that connects two
networks.
6.State three different uses for a network server. (3 marks) - Answer-database, games,
7.Explain the difference between a client-server network and a peer-to-peer network.
(4 marks) - Answer-A client-server network has separate client machines as
workstations that request services and a server to provide services. A peer to peer
network doesn't have a server. Instead, services are carried out by the computers, or
'peers' on network. On a peer to peer network all computers have equal status, they act
as workstations and also all have network functionality.
8.Explain why bus networks can often be slow. (3 marks) - Answer-Collisions; re-sends
often necessary
9.State two advantages of a star network over a bus network.
(2 marks) - Answer-fewer collisions; faster transmission
10.Explain what is meant by a network protocol. (3 marks) - Answer-Defines rules and
standards for data transmission.
11.Describe two protocols commonly used on the Internet. (4 marks) - Answer-TCP
concerned with connections, POP3 emails
12.What is a data packet? (2 marks) - Answer-A unit of data, sent on a network.
13.What is meant by packet switching?
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