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
3201
An operating system:
Answer:
Consists of programs that help operate the computer
The operating system manages hardware and software resources to run the computer.
3202
From which device is information retrieved the fastest?
Answer:
Hard disk
Hard disks provide faster data access speeds compared to floppy disks and magnetic tape.
3203
Which device offers the fastest access?
Answer:
Direct access from hard disk
Hard disks provide faster random access compared to tapes and floppy disks.
3204
Where is a magnetic strip usually found?
Answer:
Credit card
Magnetic strips on credit cards store data for transactions.
3205
What was the storage capacity of a standard 3.5 inch floppy disk?
Answer:
1.44 MB
The most common and well-known format for a 3.5-inch floppy disk was the high-density (HD) version, which had a formatted storage capacity of 1.44 megabytes (MB). This was a standard for personal computers for many years.
3206
Magnetic tape is classified as which type of access medium?
Answer:
Serial access medium
Magnetic tape requires sequential access to data, making it a serial medium.
3207
The binary system has base:
Answer:
2
Binary is a base-2 numbering system consisting of 0 and 1.
3208
Inkjet printers fall under which category?
Answer:
Non-Impact Printer
Inkjet printers spray ink without striking the paper, hence non-impact.
3209
Which storage device is typically the slowest in accessing data?
Answer:
Magnetic disk
Magnetic tape is a type of magnetic storage that stores data sequentially. To access data in the middle of the tape, the device must wind through all the preceding data, making its access time significantly slower compared to direct-access devices like hard disks, zip disks, or floppy disks.
3210
How many bits can each memory cell in a computer chip hold?
Answer:
1 bit
Each memory cell holds one bit of data.