Computer — All MCQs

4795 questions available

Showing 2821–2840 of 4795

Q2821.Which US supercomputer surpassed Japan's Fugaku in May 2022 to become the world's fastest supercomputer?

Easy
A Simorgah
B Fugaku
C Jiuzhang
D Frontier
General MCQs PPSC

Correct Answer: D

The Frontier supercomputer of Oak Ridge National Laboratory (USA) became the fastest supercomputer in the world, achieving exascale speeds.

Q2822.In search engine and digital marketing terminology, what does SEO stand for?

Easy
A Search Email Operator
B Systematic Engine Output
C Search Engine Optimisation
D Software Engine Order
Internet & Web PPSC

Correct Answer: C

SEO stands for Search Engine Optimisation, the technical process of improving a website's organic visibility on search engines.

Q2823.In digital data measurement, 1 byte consists of exactly how many bits?

Easy
A 4 bits
B 8 bits
C 12 bits
D None of these
General MCQs PPSC

Correct Answer: B

A standard byte consists of 8 bits. It represents the smallest addressable unit of memory in most computer architectures.

Q2824.A text-based user interface where users interact with the system by typing commands is called a _____?

Easy
A Common-line interface
B Command-line internet
C Command-line interface
D None of these
Internet & Web PPSC

Correct Answer: C

CLI stands for Command-Line Interface, which stands in contrast to graphical user interfaces (GUI).

Q2825.In internet testing, what does the abbreviation IBT stand for?

Easy
A International Basic Test
B Internet-Based Training
C Internet-Based Test
D Internal Board Test
Internet & Web PPSC

Correct Answer: C

IBT stands for Internet-Based Test, representing examinations delivered and proctored securely over the internet.

Q2826.In digital data, a 'nibble' is equal to _____?

Easy
A 4 bits
B 8 bits
C 12 bits
D None of these
General MCQs PPSC

Correct Answer: A

A nibble is a 4-bit data unit (half of a byte), which can represent 16 distinct values (equivalent to a single hexadecimal digit).

Q2827.A machine-level instruction in basic computer languages consists of which two key parts?

Easy
A Opcode and Operand
B Byte and Bit
C Input and Output
D None of these
Computer Networks PPSC

Correct Answer: A

A basic machine instruction contains an opcode (specifying the operation to execute) and an operand (specifying data or memory address).

Q2828.Where is the startup firmware BIOS typically stored on a computer's motherboard?

Easy
A Hard Disk
B RAM
C Flash Memory Chip
D All of these
Computer Basics PPSC

Correct Answer: C

The BIOS is stored in a non-volatile flash memory chip (ROM) on the motherboard, preserving startup configurations.

Q2829.The process of transferring files from a remote server on the Internet to your local computer is called?

Easy
A Forwarding
B Downloading
C Uploading
D None of these
Internet & Web PPSC

Correct Answer: B

Downloading represents fetching files from a remote network host. Uploading represents sending files up to the remote host.

Q2830.The network diagnostic utility command 'ping' uses which protocol to verify device connectivity?

Easy
A TCP
B UDP
C ICMP
D HTTP
Internet & Web PPSC

Correct Answer: C

The 'ping' command transmits ICMP (Internet Control Message Protocol) echo request packets and awaits an echo reply to verify connectivity.

Q2831.In internet and networking protocols, what does IP stand for?

Easy
A Internal Processing
B Internet Program
C Internet Protocol
D Input Protocol
Internet & Web PPSC

Correct Answer: C

IP stands for Internet Protocol, the principal protocol suite that defines data packet routing across networks.

Q2832.Which of the following is classified as non-volatile computer memory?

Easy
A RAM
B ROM
C PROM
D Both B and C
Computer Basics PPSC

Correct Answer: D

ROM and PROM are non-volatile memories that retain written data when powered down. RAM is completely volatile.

Q2833.Who is credited with designing and developing the foundational high-level 'C' programming language in 1972?

Easy
A Dennis Ritchie
B Bill Gates
C Bjarne Stroustrup
D James A. Gosling
Computer Terminology PPSC

Correct Answer: A

Dennis Ritchie developed the C language at AT&T Bell Laboratories, which went on to influence C++, Java, and Python.

Q2834.Which highly influential language is widely referred to as the 'mother of all languages' in modern programming?

Easy
A Python
B Java
C C
D Assembly
Computer Terminology PPSC

Correct Answer: C

C is often called the 'mother of all languages' because most compilers, operating systems, and modern programming syntaxes are built on it.

Q2835.Which Windows keyboard shortcut opens the Task Manager directly?

Easy
A Control Panel
B File Explorer
C Ctrl + Shift + Esc
D Settings
MS Word Shortcut Keys PPSC

Correct Answer: C

Pressing Ctrl + Shift + Esc bypasses secondary screens and launches the Windows Task Manager directly.

Q2836.Which shortcut key combination can be used to open the Start menu in Windows?

Easy
A Ctrl + Space
B Ctrl + Esc
C WIN + Esc
D Alt + Esc
MS Word Shortcut Keys PPSC

Correct Answer: B

Pressing Ctrl + Esc is a legacy, universal shortcut used to toggle open the Windows Start menu.

Q2837.In text editing and word processors, what does the 'Delete' key do?

Easy
A Deletes the character to the left of the cursor
B Deletes the character to the right of the cursor
C Deletes the entire line
D None of these
General MCQs PPSC

Correct Answer: B

The Delete key removes the character immediately to the right of the cursor. Backspace removes the character to the left.

Q2838.In command-line and shell interfaces, what is the purpose of the 'Enter' key?

Easy
A Process and execute the command
B Cancel the command
C Format the command text
D None of these
General MCQs PPSC

Correct Answer: A

The Enter key acts as a submission command, instructing the terminal or shell to execute the typed instruction.

Q2839.A computer's central CPU is classified as which of the following?

Easy
A Hardware
B Software
C Application software
D None of these
Computer Basics PPSC

Correct Answer: A

The CPU (Central Processing Unit) is a physical, silicon-based hardware processor component.

Q2840.Red, green, and blue squiggly lines indicate errors in MS Word. Which menu contains settings to turn these off?

Easy
A Proofing
B Spell Check
C Thesaurus
D None of these
MS Word PPSC

Correct Answer: A

In MS Word, go to File -> Options -> Proofing to customize or disable the automatic spelling and grammar squiggly lines.