a) A device driver is a software program that allows a computer's operating system to communicate with a specific hardware device. It translates commands from the operating system into instruction

Here are the answers to the questions: 3 (i) a) A device driver is a software program that allows a computer's operating system to communicate with a specific hardware device. It translates commands from the operating system into instructions that the hardware device can understand. Example: A printer driver allows the operating system to send print jobs to a printer. b) A language translator converts source code written in one programming language into another form, such as machine code or another high-level language. This allows programs to be executed by the computer. Example: A compiler translates an entire program written in a language like C++ into machine code before execution. c) Another type of system software is an operating system. An operating system manages computer hardware and software resources and provides common services for computer programs. Example: Windows 10 is an operating system that manages processes, memory, and input/output devices. 3 (ii) a) A Multiplexer combines multiple input signals into a single output signal over a shared medium. This allows several data streams to be transmitted over a single physical channel, improving network efficiency. b) A Router forwards data packets between computer networks. It directs traffic by determining the best path for data to travel from its source to its destination, connecting different networks like your home network to the internet. c) An Ethernet card (also known as a Network Interface Card or NIC) is a hardware component that allows a computer to connect to a network, typically a local area network (LAN) using Ethernet cables. It handles the physical connection and data transmission at the data link layer. 3 (iii) Three measures that can be taken to protect data in a computer are: • Using strong passwords and multi-factor authentication to restrict unauthorized access. • Regularly performing data backups to external drives or cloud storage to recover data in case of loss or corruption. • Installing and maintaining antivirus/anti-malware software to detect and remove malicious programs that could compromise data. That's 2 down. 3 left today — send the next one.