Computer — All MCQs
4795 questions available
Q2541.The clock speed of older computer CPUs was historically measured in ______?
Correct Answer: A
CPU clock speeds are measured in Hertz (Hz), historically in Megahertz (MHz) and modernly in Gigahertz (GHz).
Q2542.ASCII stands for what character encoding standard?
Correct Answer: C
ASCII stands for American Standard Code for Information Interchange, representing text in computers and other communication systems.
Q2543.Which of the following is a classic utility used for data compression?
Correct Answer: B
WinZip is a widely used file compression utility used to reduce the storage size of files and folders into archives.
Q2544.What is the primary function of a Gateway in computer networks?
Correct Answer: C
A Gateway acts as a protocol converter or translator connecting two different networks that utilize different protocols.
Q2545.Device driver software belongs to which of the following software categories?
Correct Answer: B
Device drivers are system software components that act as a translator, allowing the operating system to communicate with hardware peripherals.
Q2546.A programming loop whose body executes at least a single time is known as a ______?
Correct Answer: C
A do-while loop is a post-test loop, meaning its body always executes at least once before checking the loop exit condition.
Q2547.Which memory architecture acts as a high-speed buffer between the CPU and the main memory (RAM)?
Correct Answer: A
Cache memory is ultra-fast SRAM buffer memory located very close to the CPU that stores frequently used instructions and data.
Q2548.Which layer of the OSI model is responsible for addressing and routing packets across the network?
Correct Answer: B
The Network Layer (Layer 3) is responsible for logical packet addressing (like IP) and routing data packets between different networks.
Q2549.How many values can be returned from a function using a single return() statement in programming?
Correct Answer: C
A standard function return statement can return exactly one value or object (which could be a compound data structure like a tuple) back to the caller.
Q2550.A data field value of '01-01-2020 11:30' would be best represented with which of the following datatypes?
Correct Answer: C
The Date & Time data type is specifically designed to store and represent combined calendar date and clock time information.
Q2551.During the Windows installation process, which key is pressed to enter the system BIOS?
Correct Answer: B
Computers typically require pressing either the Delete (Del) or F2 key immediately after boot-up to open the BIOS/UEFI firmware settings.
Q2552.Which of the following is an example of a spreadsheet application?
Correct Answer: C
Microsoft Excel is a premier spreadsheet program used for organizing, formatting, and analyzing numerical data.
Q2553.The MS Word feature used to discard the last changes made to a document is _____?
Correct Answer: C
The Undo feature (Ctrl + Z) allows the user to discard the most recent text inputs, edits, or formatting changes.
Q2554.Among the following, which one is a characteristic of serial communication?
Correct Answer: C
Serial communication transmits data sequentially over a single wire. It minimizes noise and is highly efficient and reliable over long distances.
Q2555.Which of the following mathematical operators has the highest precedence in standard programming?
Correct Answer: C
In standard mathematical and programming evaluation orders, multiplication (*) holds a higher precedence than addition (+) or subtraction (-).
Q2556.A single page where data is entered in MS Excel is called ______?
Correct Answer: C
An individual page within an Excel workbook is called a worksheet. A workbook can contain multiple worksheets.
Q2557.When someone tells you that your computer does not have enough active memory, which of the following is being referred to?
Correct Answer: C
In standard computing, 'memory' refers to RAM (Random Access Memory), which temporarily holds active programs and data.
Q2558.In the star topology of a network, the central point device is a _____?
Correct Answer: C
In a star network topology, all endpoints connect to a central device such as a Hub or Switch which relays network traffic.
Q2559.Among the following, which data structure uses push() operations on its data elements?
Correct Answer: C
A Stack is a LIFO (Last In, First Out) data structure that uses push() to add elements and pop() to remove elements.
Q2560.In programming, a named memory location that can hold a changeable value is called a _____?
Correct Answer: C
A Variable is a named storage location in memory whose value can be altered during program execution.