Computer — All MCQs

4795 questions available

Showing 4761–4780 of 4795

Q4761.What term defines the total amount of time a process spends in a system from its initial arrival to final completion?

Easy
A Throughput
B Turnaround Time
C Output
D None of these
Computer Basics PPSC

Correct Answer: B

Turnaround Time represents the complete lifespan of a process, measuring the exact duration between submission and termination.

Q4762.In the OSI model, what type of logical data unit does the Data Link Layer (Layer 2) manage?

Easy
A Packets
B Frames
C Segments
D Bits
Computer Basics PPSC

Correct Answer: B

The Data Link Layer encapsulates network packets into Frames, preparing them for physical transmission as raw bits.

Q4763.In C/C++ programming, what roles can a 'null pointer' serve?

Easy
A To stop indirection in a recursive data structure
B As an error return value
C As a sentinel value
D All of the above
Computer Terminology PPSC

Correct Answer: D

A null pointer serves multiple roles, including acting as a sentinel, representing function errors, and terminating recursive trees or linked lists.

Q4764.Which formatting feature in Microsoft Word determines the exact vertical spacing between lines of a paragraph?

Easy
A Alignment
B Effects
C Indentation
D Line spacing
MS Word PPSC

Correct Answer: D

Line Spacing controls the vertical distance separating adjacent lines of text within a selected paragraph.

Q4765.In asymmetric digital signatures, which cryptographic key is made public and known to everyone?

Easy
A Private key
B Foreign key
C Public key
D Integrity key
General MCQs PPSC

Correct Answer: C

Public keys are distributed openly to allow anyone to verify a signature, whereas private keys must remain strictly confidential.

Q4766.Which software development lifecycle (SDLC) model actively incorporates user reviews and feedback throughout all its phases?

Easy
A Waterfall model
B Spiral model
C Agile model
D V-shaped model
General MCQs PPSC

Correct Answer: C

The Agile model relies on iterative cycles (sprints) with continuous collaboration and regular user reviews to adapt to changes.

Q4767.By design, in which processing mode does a computer microprocessor work?

Easy
A Serial mode
B Parallel mode
C Both serial and parallel mode
D None of the above
General MCQs PPSC

Correct Answer: B

Microprocessors process data in parallel, transmitting multiple bits (such as 32 or 64 bits) simultaneously over parallel internal buses.

Q4768.According to software engineering methodologies, the RAD model consists of how many distinct phases?

Easy
A 2 phases
B 3 phase
C 5 phases
D 6 phases
General MCQs PPSC

Correct Answer: C

The Rapid Application Development (RAD) model standardly consists of 5 phases: Business, Data, and Process Modeling, Application Generation, and Testing/Turnover.

Q4769.In software engineering project methodologies, what does the abbreviation 'RAD' stand for?

Easy
A Rapid Application Design
B Rapid Application Development
C Regular Application Design
D Regular Application Development
General MCQs PPSC

Correct Answer: A

The abbreviation RAD is formally defined as Rapid Application Design in traditional testing contexts.

Q4770.In relational database design terminology, records are formally referred to as which of the following?

Easy
A Files
B Tables
C Rows
D Fields
Computer Terminology PPSC

Correct Answer: C

A row in a database table represents a single, complete record containing multiple fields (attributes).

Q4771.What is the primary professional purpose of a software engineer?

Easy
A Designing and developing software applications
B Managing software projects
C Testing and debugging software code
D All of the above
General MCQs PPSC

Correct Answer: D

Software engineers are responsible for the entire lifecycle of software, including design, development, testing, debugging, and project management.

Q4772.The general-purpose 'C' programming language belongs to which category of languages?

Easy
A High-level language
B Low-level language
C Assembly language
D Machine language
Computer Terminology PPSC

Correct Answer: A

C is a compiled high-level programming language that abstracts physical hardware details while providing efficient memory access.

Q4773.Which of the following addresses is generated dynamically by the CPU during program execution?

Easy
A Physical address
B Absolute address
C Logical address
D None of these
Computer Basics PPSC

Correct Answer: C

The CPU generates a Logical (or Virtual) Address which is translated by the Memory Management Unit (MMU) into a physical address in RAM.

Q4774.What is the formula used to calculate the number of possible communication channels in a round table meeting of 'n' participants?

Easy
A n
B n / 2
C n - 1
D n * (n - 1) / 2
General MCQs PPSC

Correct Answer: D

The total number of unique communication links or channels between n individuals is calculated as n(n-1)/2.

Q4775.On which toolbar can you locate the Format Painter tool in classic versions of Microsoft Word?

Easy
A Formatting toolbar
B Picture Toolbar
C Drawing Toolbar
D Standard toolbar
MS Word PPSC

Correct Answer: D

In older toolbar-based versions of MS Word, the Format Painter is found on the Standard toolbar (represented by a paintbrush icon).

Q4776.What term is used in word processing for ready-made graphical illustrations that can be easily inserted into documents?

Easy
A Peripheral
B Clip art
C Highlight
D Execute
MS Word PPSC

Correct Answer: B

Clip art represents a collection of pre-made pictures, graphics, or illustrations that can be imported to enhance document visual layouts.

Q4777.In Microsoft Word, what is the correct ribbon navigation path to insert a hyperlink?

Easy
A Right-click and select edit
B Press Ctrl + H on the keyboard
C Navigate to the 'Insert' tab and select 'Hyperlink'
D Press Alt + F4
MS Word Shortcut Keys PPSC

Correct Answer: C

To insert a hyperlink, navigate to the Insert tab and click Hyperlink, or use the Ctrl + K keyboard shortcut.

Q4778.What is software that is distributed completely free of charge to users called?

Easy
A Free software
B Open-source software
C Paid software
D Trial software
General MCQs PPSC

Correct Answer: A

Software offered completely free of financial cost is termed Free software (or Freeware).

Q4779.What type of data signals are radio signals classified as in communication systems?

Easy
A Analog signals
B Digital signals
C Optical signals
D Magnetic signals
General MCQs PPSC

Correct Answer: A

Radio waves are continuous electromagnetic waveforms, representing analog signals rather than discrete binary packets.

Q4780.If you have an 18 GB storage partition and subtract 1 GB from it, what is the remaining capacity?

Easy
A 18 GB
B 17 GB
C 16 GB
D 19 GB
Computer Basics PPSC

Correct Answer: B

Subtracting 1 GB from an 18 GB storage partition leaves exactly 17 GB of storage capacity.