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
111
Which company leads as the biggest manufacturer of hard disk drives?
Answer:
Seagate
Seagate is widely known as one of the largest hard disk drive manufacturers.
112
Why are computer viruses given that name?
Answer:
Because they can copy themselves and infect other files
Computer viruses are malware programs that reproduce by copying themselves into other programs or files, much like biological viruses.
113
What is the purpose of the `-h` option for the `ls` command in Linux or macOS?
Answer:
To display file sizes in human-readable format (e.g., KB, MB, GB)
The `-h` (human-readable) option for the `ls` command makes it easier to read the file sizes.
114
The Find utility can be used to:
Answer:
All of the above
The Find tool allows users to search for documents, programs, and other computers on a network from one place.
115
Which of the following is not a valid command in either Windows or Linux?
Answer:
duplicate
There is no standard operating system command named `duplicate`.
116
Which command is used to display the current working directory in a Linux or macOS terminal?
Answer:
pwd
The `pwd` (print working directory) command displays the full path of the current working directory.
117
What term involves multiple processors in the computer?
Answer:
Multiprocessing
Multiprocessing specifically refers to a computer system's ability to support more than one processor (CPU) and to allocate tasks between them. This enables true parallel execution of processes, which is distinct from multitasking on a single processor.
118
The operating system belongs to which category of software?
Answer:
System
An operating system is considered system software because it manages computer hardware and provides a platform for other software to run.
119
A distributed operating system provides the illusion of:
Answer:
A single, powerful computer
A distributed operating system is a system software over a collection of independent, networked, communicating, and physically separate computational nodes. They handle jobs which are serviced by multiple CPUs.
120
The term "Pentium" is associated with:
Answer:
Microprocessor
Pentium indicates a family of microprocessors developed by Intel.