Computer — All MCQs
4795 questions available
Q2261.A processor unit that controls, coordinates and directs all operations performed by the computer is ______?
Correct Answer: C
The Control Unit (CU) coordinates and directs all the tasks executed by the computer system.
Q2262.ERIC is a?
Correct Answer: B
ERIC (Education Resources Information Center) is a comprehensive online database of education-related literature.
Q2263.Which country has the worst internet speed?
Correct Answer: C
Yemen historically records some of the slowest internet connection speeds in the world.
Q2264.5G internet technology mainly uses which frequency range?
Correct Answer: C
5G technology uses high-frequency radio waves in the millimeter wave spectrum for high speed and low latency.
Q2265.ALU stands for what?
Correct Answer: A
ALU stands for Arithmetic Logic Unit, the computational center of the CPU.
Q2266.In MS PowerPoint F5 is used for _____?
Correct Answer: A
In PowerPoint, pressing F5 launches the slide show presentation from the beginning.
Q2267.An Email address consists of two parts, Username or ID and _____?
Correct Answer: B
An email address consists of two parts: the username/ID and the domain name, separated by an @ symbol.
Q2268.DOS stands for ______?
Correct Answer: C
DOS stands for Disk Operating System, a CLI-based OS.
Q2269.PNG, JPEG, GIF are the formats of _____ files.
Correct Answer: A
PNG, JPEG, and GIF are file extensions for digital image graphics.
Q2270.In the banking system, what does OTP stand for?
Correct Answer: A
OTP is a temporary secure One Time Password used to verify transactions.
Q2271.In binary representation, what is the decimal equivalent of 1011?
Correct Answer: A
Binary 1011 equals 11 in the decimal system.
Q2272.What is the full form of QR?
Correct Answer: A
QR stands for Quick Response, a type of matrix barcode.
Q2273.Which of the following best defines a hotkey in the context of office automation?
Correct Answer: C
A hotkey is a combination of keys pressed to execute an automated command quickly.
Q2274.Among the following, which one is the purpose of using frames in HTML?
Correct Answer: A
HTML frames are used to divide a webpage into sections displaying separate HTML documents.
Q2275.When you go to a tyre shop for wheel alignment, what type of computer does the mechanic use?
Correct Answer: A
A wheel alignment machine uses a specialized computer dedicated to a single diagnostic task.
Q2276.In MS Word, which of the following options are found in the 'Arrange' group?
Correct Answer: A
The Arrange group contains layout options such as Align, Rotate, Position, and Wrap Text.
Q2277.Among the following communication mediums, which one requires alignment between sender and receiver for long-range communication?
Correct Answer: C
Microwave communication operates via high-frequency line-of-sight signals requiring direct antenna alignment.
Q2278.Time-sharing operating systems can also be considered as?
Correct Answer: C
Time-sharing systems allow multiple users to share CPU cycles, making them multitasking environments.
Q2279.To represent the type of relationship between entities in an ER diagram, which of the following symbols is used?
Correct Answer: B
In ER diagrams, rectangles represent entities, ovals represent attributes, and diamonds represent relationships.
Q2280.A method used by perpetrators to gather personal information using false e-mails and websites is referred to as?
Correct Answer: C
Phishing is a social engineering exploit that uses fraudulent electronic communications to steal sensitive credentials.