IGCSE Computer Science (0984) — May–June 2023, Paper 12

Circle three output devices from the following list. Actuator Keyboard Microphone Printer Scanner Speaker Touch screen Webcam

Convert the following 8-bit binary numbers to hexadecimal. Show your working. 10010011 00001101

A character set is used to represent text data in binary. Convert the text 'Hi' to binary using the ASCII character set. H has the ASCII denary value of 72. i has the ASCII denary…

Data is transmitted between devices. Identify one type of data transmission where bits are transmitted one at a time along a single wire.

A programmer writes a program in a high-level language. Tick (✓) one box to show which statement about a high-level language is correct. A Each instruction directly corresponds to…

Complete the sentences about cookies by using the correct words from the list. persistent session text web browser web server Cookies are small files, containing data, that are…

A company experiences a Distributed Denial of Service (DDoS) attack. Draw and annotate a diagram to show how a DDoS attack works.

A device is allocated an IPv4 address when it joins a network. Tick (✓) one box to show which device allocates the IPv4 address. A The DNS server B The ISP server C The router D…

An expert system is used to help diagnose medical conditions. Give three other components of an expert system (other than the inference engine).

Describe the difference between system software and application software. Give one example of each.