Computer Science

The Arithmetic & Logic Unit (ALU) is a core component of the CPU responsible for performing arithmetic and logical operations. Printer, keyboard, and mouse are peripheral input/output devices and are not part of the CPU.

Floppy disk is the slowest among the given storage devices because it has very low data transfer rate and higher access time compared to hard disks and zip disks. Hard disks and zip disks are faster and more advanced magnetic storage devices.

The word 'computer' is derived from the Latin word 'putare', which means 'to reckon' or 'to calculate'. This reflects the original purpose of computers as calculating devices. Other options are not correct Latin roots related to the term.

A mouse is a point-and-draw input device used to control the cursor and interact with graphical elements on a computer screen. It allows users to point, click, and draw or select items. Other options like scanner, printer, and CD-ROM serve different input/output or storage functions.

A disk (such as a hard disk or floppy disk) is a secondary memory device used for non-volatile, long-term data storage. The keyboard is an input device, and ALU (Arithmetic Logic Unit) is a component of the CPU, neither of which is a secondary memory device.

A queue follows the FIFO (First In First Out) principle, where insertion (enqueue) and deletion (dequeue) are allowed only at specific ends. Traversing is also possible to view elements in order. However, direct retrieving (random access to any element) is not allowed in a queue.

Client-server applications involve a client requesting services from a server, such as web browsing, email, and internet chat. 'Ping' is a network diagnostic tool that uses ICMP packets to check connectivity and does not follow a client-server application model.

Laser printers use dry ink powder called toner to produce high-quality printed text and images. The toner is fused onto paper using heat and pressure. Other printers like daisy wheel, line, and thermal printers use different printing mechanisms that do not involve dry ink powder.

The shortcut key for the Bold command in most text editing software is Ctrl + B, which toggles bold formatting on and off.

A hard disk, flash drive, and DVD are all storage media used to store data. A scanner is an input device used to capture images or documents and transfer them to a computer.

The Program Counter (PC) is a special CPU register that holds the address of the next instruction to be executed. It automatically updates after each instruction fetch, ensuring sequential execution of instructions in a program. Other registers like MAR and IR serve different roles in the instruction cycle.

The Loader is a program within the operating system responsible for loading executable files (programs) into memory, effectively carrying your data to be executed. BIOS and ROM are hardware-related firmware, and the Processor executes instructions but does not carry data as a program.

Web 2.0 represents the shift toward user-generated content, interactivity, and collaboration. It emphasizes platforms where users can create, share, and collaborate on content (e.g., social media, wikis), rather than passively consuming static, publisher-provided content as in Web 1.0.

Links enable automatic updates in destination documents because they maintain a connection to the source document, so changes in the source are reflected automatically in the destination.

In operating systems, process scheduling involves various queues like Job Queue, Ready Queue, and Device Queue that hold processes or process identifiers. PCB (Process Control Block) is a data structure containing information about a process, not a queue for holding processes itself.

A peripheral device is any external hardware component connected to a computer that provides input, output, or storage functions. Among the options, a printer is a clear example of an output peripheral device, while CD-ROM and monitor serve different roles but are less appropriate as the single best answer in this context.

Supercomputers are the most powerful type of computers, designed to perform extremely complex and high-speed calculations. They are used in scientific research, weather forecasting, space exploration, and large-scale simulations. Other types like mainframe, minicomputers, and microcomputers are less powerful in comparison.

A Command Line Interface (CLI) allows users to interact with the computer by typing text-based commands using a keyboard. The system then executes these commands to perform specific tasks. Other interfaces like GUI and touchscreen rely on visual elements rather than typed commands.

The CPU (Central Processing Unit) is the primary component of a personal computer that performs computations and executes instructions. The motherboard connects components, RAM provides temporary data storage, and BIOS initializes hardware during booting, but none of these perform actual computing operations.

Windows 8 originally removed the traditional Start button and Start menu, replacing it with the Start screen interface. Later updates and Windows 8.1 reintroduced a modified Start button. Windows 10 and Windows Vista both include the Start button.

Assembly languages are considered low-level programming languages because they provide a close correspondence to a computer's machine code instructions, unlike high-level languages such as BASIC, COBOL, Fortran, C, C++, or Prolog.

The Central Processing Unit (CPU) is called the brain of the computer because it performs calculations, processes instructions, and controls all major operations of the system. It coordinates the activities of all other computer components.

PASCAL is a programming language specifically designed to support structured programming, emphasizing clear program structure and readability. It encourages the use of procedures and functions, making programs easier to understand and maintain compared to languages like FORTRAN, BASIC, and PL/1.

Microsoft OneNote is a digital note-taking application designed for capturing, organizing, and sharing notes across devices, including tablet PCs and regular computers. PowerPoint is used for presentations, and Access is a database management system.

AND, OR, and NOT are basic logic gates used in digital electronics to perform logical operations. Since all three are valid logic gates, the correct answer is 'All of these'.