Take this Exam: GCSE Computer Science: Computer Systems | Zestly

Question 1

A bitmap image is 200 pixels wide and 100 pixels high and is stored with a colour depth of 4 bits. Ignoring any metadata, what is the file size of the image in bits?

Accepted Answer

80 000 bits

Answer

20 000 bits

Answer

5 000 bits

Answer

240 000 bits

Question 2

Which network hardware component is used to connect multiple devices within a LAN and directs data packets to the specific destination device?

Accepted Answer

Switch

Answer

Router

Answer

Network Interface Card

Answer

Wireless Access Point

Question 3

What is the primary purpose of the TCP/IP protocol suite?

Accepted Answer

To define how data is broken into packets and transmitted across networks

Answer

To prevent unauthorised access to a network

Answer

To encrypt data sent over the internet

Answer

To provide a graphical interface for web browsing

Question 4

Which of the following is an example of a social engineering attack?

Answer

A brute force attack on a password

Answer

A denial of service attack on a server

Answer

Phishing emails designed to trick users into revealing credentials

Answer

Installing malware through a software vulnerability

Question 5

What is the main function of a firewall in a computer system?

Answer

To monitor and filter incoming and outgoing network traffic

Answer

To automatically remove all viruses from a computer

Answer

To encrypt files stored on the hard drive

Answer

To prevent physical theft of hardware