Computer Science/IT MCQs
Topic Notes: Computer Science/IT
MCQs and preparation resources for competitive exams, covering important concepts, past papers, and detailed explanations.
Plato
- Biography: Ancient Greek philosopher (427–347 BCE), student of Socrates and teacher of Aristotle, founder of the Academy in Athens.
- Important Ideas:
- Theory of Forms
- Philosopher-King
- Ideal State
651
A deadlock is a situation where:
Answer:
A process is waiting for a resource that is held by another waiting process
A deadlock is a situation in which two or more competing actions are each waiting for the other to finish, and thus neither ever does.
652
Who is considered the supervisor of computer activity?
Answer:
Control Unit
The Control Unit within the CPU directs and coordinates all computer operations and execution of programs, effectively supervising the system's activities.
653
What category of operating system is most common on PDA computers?
Answer:
Single user, single task
Most PDAs use single user, single task operating systems, focusing on one active function at a time.
654
The ____ is the core part of the OS containing instructions used most frequently by the system.
Answer:
Kernel
The kernel manages the most essential and frequent system operations in the OS.
655
What component is responsible for mediating communication between users and operating systems?
Answer:
User interface
The user interface (UI) is the part of the operating system that allows the user to interact with the computer. It can be a command-line interface (CLI) where users type commands, or a graphical user interface (GUI) with icons and windows. It translates human inputs into commands the OS can understand.
656
How is data arranged within a typical spreadsheet?
Answer:
Rows and columns
Data in spreadsheets is organized in the form of rows (horizontal) and columns (vertical), creating a grid structure.
657
Which option is ideal when you are unsure how long your computer will be unused, but want to resume exactly where you left off?
Answer:
Hibernate
Hibernate is suitable when stepping away for longer periods, storing your desktop state without consuming power.
658
Which operating system does NOT support long file names?
Answer:
MS-DOS
MS-DOS uses the 8.3 filename format, restricting file names to 8 characters plus a 3-character extension, while the others support longer names.
659
Which command is used to list the files and directories in the current directory in a Windows command prompt?
Answer:
dir
The `dir` command is used in DOS and Windows to display a list of files and subdirectories in a directory.
660
Upon startup, which screen shows BIOS version and manufacturer information?
Answer:
Power On Self Test (POST)
The POST process displays BIOS details and checks hardware integrity during computer startup.