Cambridge International A Level · Computer Science (9618)

Communication: Practice Questions

5 multiple-choice questions marked as you go, and 5 written questions with worked solutions. All on Communication.

10 questions24 marksFree, no account

Question 1

1 mark

Which networking device is responsible for directing data packets between different networks by examining the destination IP address?

Question 2

1 mark

An IPv4 address is given as \(192.168.10.45\). If the subnet mask is \(255.255.255.0\), which part of the address represents the network identifier?

Question 3

1 mark

In an Ethernet network utilizing CSMA/CD, two nodes, Station A and Station B, attempt to transmit a frame at the same time, resulting in a collision.

Which of the following describes the most technically accurate sequence of events that follows the detection of this collision?

Question 4

1 mark

In packet switching, what is the primary role of a router when a packet arrives at an intermediate node?

Question 5

1 mark

In the TCP/IP protocol suite, as a data unit is passed from the Transport Layer down to the Internet Layer, what specific encapsulation process occurs?

Question 6

2 marks

Identify the primary purpose of a Network Interface Card (NIC) within a computer system connected to a network.

Write your answer out first, then check it against the worked solution.

Question 7

3 marks

A company utilizes both public clouds and private clouds to manage its data storage and processing needs.
State the term used to describe this combination of cloud infrastructures and identify one benefit of using a private cloud compared to a public cloud.

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Question 8

5 marks

Explain the roles of trackers and seeds within the BitTorrent protocol during a file sharing session.

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Question 9

4 marks

(a) In the context of computer networks, explain the fundamental difference between the Internet and the World Wide Web (WWW).
(b) Identify two specific hardware components required to support the infrastructure of the Internet and state their purpose.

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Question 10

5 marks

A company is setting up a new network to connect its branch offices across different cities. They are evaluating communication technologies.

(a) Describe the process of packet switching, explaining how data is transmitted from a source to a destination across a network using this method.

(b) State two benefits and two drawbacks of using packet switching for network communication compared to circuit switching.

Write your answer out first, then check it against the worked solution.

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