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
1021
The WAV file format is associated with which type of files?
Answer:
Sound
WAV is an audio file format developed by Microsoft and IBM for storing uncompressed sound data.
1022
Poor response times in a computer system are most often caused by:
Answer:
Any of the above
Poor response times can result from a busy processor, high input/output rates, or excessive paging.
1023
The act of stealing passwords is commonly referred to as:
Answer:
Spoofing
Spoofing involves masquerading as an authorized user, often by stealing and using real passwords to gain access.
1024
Which is NOT a system tool in Windows?
Answer:
Virus scanning
Virus scanning is generally handled by antivirus software, not as a built-in system tool. Backup and disk defragment are included as system tools.
1025
Which was the first general-purpose electronic computer?
Answer:
ENIAC
ENIAC (Electronic Numerical Integrator and Computer) was the first general-purpose programmable electronic computer.
1026
What part of the computer performs the transformation of input data into output?
Answer:
The CPU
The CPU (Central Processing Unit) processes input data, carrying out instructions to produce the required output.
1027
System files are required to run which of the following?
Answer:
MS Dos
System files are fundamental to running MS-DOS, as they provide the basic operating environment.
1028
Data arrangement within a spreadsheet application is typically structured as:
Answer:
Rows and Columns
Spreadsheet software organizes data in horizontal rows and vertical columns, creating a grid.
1029
Which operating system listed does NOT truly implement multitasking?
Answer:
MS DOS
MS DOS is a single-tasking system, meaning it can only run one program at a time.
1030
Page Down Key is used to
Answer:
Moves the cursor one screen down
The correct answer is C) Moves the cursor one screen down. The Page Down key, often abbreviated as PgDn, is a keyboard key designed to move the visible content of a document or window downwards by one full screen or page at a time. This means that if you are viewing a long document, pressing Page Down will scroll the content so that the line that was at the bottom of your screen is now at the top, and a new page's worth of content is displayed below it. Option A is incorrect because moving the cursor one line down is the function of the Down Arrow key. Option B, while conceptually similar, is not the precise function; it moves one screen down, which may or may not correspond to an exact page in all document formats or displays. Option D is incorrect; moving the cursor one paragraph down is typically achieved by pressing Ctrl + Down Arrow or a similar key combination. Therefore, the most accurate description of the Page Down key's functionality is moving the cursor one screen down.