Computer Science - IT MCQs
Topic Notes: Computer Science - IT
<p>MCQs and preparation resources for competitive exams, covering important concepts, past papers, and detailed explanations.</p>
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
1821
Device used to enter data or information into a computer include:__________?
Answer:
All
An input device is any hardware component that allows users to enter data and instructions into a computer. A keyboard is used for typing text, a mouse is used for pointing and clicking, and a microphone is used to input sound. Therefore, all the listed items are input devices.
1822
What does ASCII stand for?
Answer:
American Standard Code for Information Interchange
ASCII is a standard coding scheme used to represent text in computers and communication equipment.
1823
WAN hardware includes:
Answer:
Multiplexers and routers
Wide area networks use devices like multiplexers and routers to manage data transmission.
1824
What type of keys are F1 through F12 referred to as?
Answer:
Function keys
The keys labeled F1 through F12 on a computer keyboard are known as function keys. Their specific purpose or function can vary depending on the operating system and the software application that is currently active.
1825
How many types of semiconductor memory are typically used in computers?
Answer:
Two
The two common types are RAM (volatile) and ROM (non-volatile).
1826
Which of the following is NOT hardware?
Answer:
Assembler
An assembler is software that converts assembly language to machine code.
1827
An interface electronic circuit used to connect I/O devices to a computer’s CPU or _____ is a:
Answer:
Buffer
Buffers act as intermediaries facilitating communication between I/O devices and the CPU or memory.
1828
Dot matrix and band printers are classified as what type?
Answer:
Impact
Impact printers physically strike paper to create images.
1829
What does the letter 'C' in CPU represent?
Answer:
Central
CPU stands for Central Processing Unit. The 'C' stands for Central, which highlights its role as the primary component of a computer that controls operations and performs the processing, acting as the 'brain' of the system.
1830
Retaining data for future use is called:
Answer:
Storing
Storing is the act of saving data to a storage medium.