OS, DLL and PL

Why do modern computers need an operating system?

• To make computers faster

• To allow users to write programs

• To provide an environment for applications to run

• To reduce memory usage

Answer explanation

Modern computers need an operating system to provide an environment for applications to run. It manages hardware resources and allows software to function effectively, ensuring compatibility and stability.

Which of the following is NOT a key management task of an operating system? (a)  

• Memory management
• Hardware management
• Internet browsing
• Process management

Answer explanation

Internet browsing is not a key management task of an operating system. The OS primarily handles memory management, hardware management, and process management, while browsing is a user-level application.

Which type of operating system interface requires users to type commands?

(a)  

• GUI
• WIMP
• CLI
• Touchscreen

Answer explanation

The CLI (Command Line Interface) requires users to type commands to interact with the operating system, unlike GUI (Graphical User Interface) or WIMP (Windows, Icons, Menus, Pointer) which use visual elements.

The role of the file management system in an OS is (a)   .

• Prevents access to files
• Controls how files are named, store
• Manages user permissions for intern
• Ensures all applications run at the

Answer explanation

The file management system in an OS is crucial as it controls how files are named, stored, and retrieved, ensuring efficient organization and access to data. This is essential for user interaction with files.

Which of the following is NOT an example of utility software? (a)  

• Disk defragmenter
• Antivirus software
• Word processor
• File compression

Answer explanation

A word processor is not utility software; it is an application for creating documents. In contrast, disk defragmenters, antivirus software, and file compression tools are all types of utility software that help manage system resources.

What does an antivirus program do?

• Detects and removes malicious software

• Increases internet speed

• Compresses large files for storage

• Formats a hard disk

Answer explanation

An antivirus program is designed to detect and remove malicious software, protecting your computer from viruses, malware, and other threats. The other options do not relate to the primary function of antivirus software.

What is a benefit of using a Dynamic Link Library (DLL) file?

• Reduces software execution time by preloading all functions

• Allows multiple programs to share routines at runtime

• Prevents software from being updated

• Makes software independent of the operating system

Answer explanation

A key benefit of using a DLL is that it allows multiple programs to share routines at runtime, promoting code reuse and reducing memory usage, as the same library can be loaded by different applications simultaneously.

Match the following language translators with their functions.

• Translates high-level language to machine code all at once

• Interpreter

• Translates high-level language to machine code line by line

• Debugger

• Helps in finding and fixing bugs in code

• Compiler

• Translates assembly language to machine code

• Assembler

Answer explanation

A compiler translates high-level language into machine code all at once, creating an executable file. In contrast, an assembler translates assembly language, an interpreter translates code line-by-line, and a debugger helps find errors.

Which feature of an IDE helps programmers find errors while coding?

• Debugger

• Text editor

• File manager

• Compiler

Answer explanation

The debugger is a feature of an IDE that allows programmers to find and fix errors in their code by stepping through the code, inspecting variables, and evaluating expressions, making it essential for error detection.

Memory optimization in an operating system is (a)   .

• Controlling access to memory
• Organizing memory to maximize effic
• Deleting old files from RAM
• Preventing unauthorized users from

Answer explanation

Memory optimization in an operating system refers to organizing memory to maximize efficiency. This involves managing how memory is allocated and used, ensuring that resources are utilized effectively for better performance.