Computer — All MCQs
4795 questions available
Q2501.The F5 key on a standard computer keyboard is primarily used to?
Correct Answer: A
In browsers and folder explorers, pressing F5 refreshes or reloads the active window or webpage.
Q2502.What is the standard data storage capacity of a normal Compact Disk (CD)?
Correct Answer: A
A standard CD-ROM stores up to 700 megabytes (MB) of data or about 80 minutes of uncompressed audio.
Q2503.The fundamental stored-program structure of modern computers was developed by which pioneer?
Correct Answer: A
The basic computer architecture (with ALU, control unit, memory, and joint instruction/data space) was developed by John von Neumann in 1945.
Q2504.In MS Access, how many primary keys can typically be defined per table?
Correct Answer: A
Relational databases permit only one Primary Key (which uniquely identifies each row) per table.
Q2505.Which technique for deadlock recovery is generally easiest regarding CPU overhead?
Correct Answer: C
Terminating one or more deadlocked processes (Process Termination) is the simplest recovery method, despite losing some computational work.
Q2506.The famous Android operating system was established and further developed by which company?
Correct Answer: B
Google acquired Android Inc. in 2005 and has since driven its development and global deployment.
Q2507.What is virtual memory in operating systems?
Correct Answer: C
Virtual memory is an OS technique that uses a portion of secondary storage (hard drive) to pretend to be additional RAM when physical memory runs low.
Q2508.Which of the following is NOT included in the Von Neumann computer architecture?
Correct Answer: D
The Von Neumann architecture features a unified memory for both data and instructions. Separate instruction and data buses belong to the Harvard architecture.
Q2509.Which core part of an Operating System is responsible for managing hardware resources?
Correct Answer: B
The Kernel is the heart of an operating system, directly interacting with and managing hardware resources (like memory, CPU, and peripherals).
Q2510.Which system call is used in Unix-based operating systems to create a new child process?
Correct Answer: B
The fork() system call creates an exact duplicate child process of the parent process in Unix/Linux.
Q2511.Which of the following is a valid built-in option for Backup and Restore in Windows 10?
Correct Answer: B
File History is Microsoft's primary built-in utility in Windows 10 designed to automatically back up user file histories.
Q2512.In database and recovery systems, what are 'checkpoints'?
Correct Answer: C
Checkpoints are periodically recorded, consistent system states from which the database or OS can resume recovery after a crash.
Q2513.A self-service kiosk allows customers to select options on-screen and instantly view confirmations on the same surface. Which device is used?
Correct Answer: C
A touch screen handles both input (touch selections) and output (visual display of confirmations) on the exact same surface.
Q2514.In operating systems, different files are primarily recognized and opened by their?
Correct Answer: C
The file extension (like .txt, .pdf, or .exe) identifies the file format and tells the OS which application to use to open it.
Q2515.Which device is primarily used to visually display transaction details to a bank teller?
Correct Answer: B
A computer monitor is the primary display output hardware used to show user interfaces and transaction details.
Q2516.In MS Access, which 5-letter term starts with S?
Correct Answer: C
In MS Access, when you open a table or query results, Access displays the data in Datasheet view, which is referred to as a Sheet (5 letters). Other 5-letter objects are Table and Query, but they do not start with S.
Q2517.Which device is MOST appropriate for capturing customer signatures digitally in a branch?
Correct Answer: C
A touch screen allows users to write their signature directly onto the screen using a stylus or finger, making it ideal for digital signature capture.
Q2518.Which of the following is a type of computer program that is used to perform a specific task, such as creating a spreadsheet or editing an image?
Correct Answer: B
Application software is designed to perform specific user-oriented tasks, like creating spreadsheets or editing images, separate from core system software tasks.
Q2519.Which of the following is a physical component of a computer?
Correct Answer: A
Physical, tangible parts of a computer system are called hardware. A printer is a hardware peripheral, whereas MS Word and Windows are software.
Q2520.Which feature in a word processor checks spelling and grammar?
Correct Answer: C
Spell Check is a standard office automation tool designed to identify and correct spelling and grammatical errors.