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
3261
What type of device is a daisy wheel?
Answer:
Printer
Daisy wheel printers print characters using a wheel with letters on the ends.
3262
The communication line between the CPU, memory, and peripherals is called a:
Answer:
Bus
A bus is a common pathway for data transfer between computer components.
3263
What are small, fast memory units used to hold temporary results?
Answer:
Registers
Registers are high-speed memory locations within the CPU storing intermediate data.
3264
A storage device connected directly to a network is known as what?
Answer:
Network attached storage
NAS is a file-level storage system connected to a network for centralized data access.
3265
What is the storage capacity of a single-layer Blu-ray disc?
Answer:
25 GB
A single-layer Blu-ray disc can hold up to 25 gigabytes of data.
3266
Which of these is considered a very basic computer?
Answer:
Calculator
Calculators are simple dedicated computing devices.
3267
Which statement about memory is true?
Answer:
Cache is smaller than RAM
Cache memory is smaller but faster than RAM, storing frequently used data.
3268
The octal number system has how many symbols?
Answer:
8
Octal uses 8 symbols (0 to 7).
3269
A half adder is a logic circuit that adds how many digits at a time?
Answer:
One
A half adder adds two single binary digits (bits), producing a sum and a carry.
3270
What does the computer principle GIGO stand for?
Answer:
Garbage in garbage out
GIGO means if incorrect or poor quality data is entered, the output will also be incorrect or poor.