PPSC Computer Operator Past Paper 2026 Solved Solved MCQs

Correct Answer: Google

Google acquired Android Inc. in 2005 and has since developed and maintained the Android mobile operating system.

Correct Answer: Linux

Linux is a family of open-source Unix-like operating systems, contrasting with proprietary systems like Windows and macOS.

Correct Answer: Operating system

An operating system is essential for hardware management and for loading other programs into memory upon startup.

Correct Answer: File extension

Operating systems use file extensions to identify the file format and determine which application should open the file.

Correct Answer: Kernel

The kernel is the central component of an operating system that manages hardware resources and interfaces directly with the hardware.

Correct Answer: Fork

The fork() system call in Unix/Linux is used to create a new process by duplicating the existing (parent) process.

Correct Answer: Processes wait indefinitely

A deadlock occurs when two or more processes are waiting for each other to release resources, resulting in a state where none can proceed.

Correct Answer: All of these

Windows 10 allows users to back up data to various locations including external USB drives, cloud services like OneDrive, or network locations.

Correct Answer: Operating system

macOS is the proprietary operating system developed by Apple for its Mac line of computers.

Correct Answer: Recovery

Checkpoints allow an operating system or database to restore state and continue from a known good configuration after a failure.

Correct Answer: Circular wait

While mutual exclusion, hold and wait, and no preemption are conditions for deadlock, circular wait is the final condition that completes the deadlock scenario.

Correct Answer: Hard disk

Virtual memory uses a portion of the hard disk drive to act as an extension of the computer's physical RAM.

Correct Answer: John von Neumann

John von Neumann described the stored-program computer architecture in a 1945 paper, which is now the basis for modern computer design.

Correct Answer: I/O interface

The classic Von Neumann architecture consists of the Arithmetic Logic Unit (ALU), Control Unit, Memory, and Input/Output mechanisms, though modern textbooks often distinguish I/O as external to the core architectural model.

Correct Answer: Arithmetic and logical operations

The Arithmetic Logic Unit (ALU) is the part of the CPU responsible for performing mathematical calculations and logical comparisons.

Correct Answer: SISD

SISD (Single Instruction, Single Data) is the traditional von Neumann architecture model where one instruction acts on one piece of data at a time.

Correct Answer: Registers

CPU registers are the smallest and fastest type of memory located directly inside the processor.

Correct Answer: WAN

The Internet is a Wide Area Network (WAN) that connects devices across large geographical distances.

Correct Answer: SMTP

Simple Mail Transfer Protocol (SMTP) is the standard protocol used for sending emails across the internet.

Correct Answer: Router

A router is a networking device that connects multiple networks and directs data traffic between them.

Correct Answer: 128 bits

An IPv6 address is 128 bits long, providing a significantly larger address space than IPv4.

Correct Answer: Transponders

A transponder is a component of a satellite that receives signals, changes their frequency, and retransmits them to Earth.

Correct Answer: 80

Port 80 is the standard port used for unencrypted HTTP web traffic.

Correct Answer: Protocol

A network protocol is a set of established rules that govern how data is transmitted and received between devices.

Correct Answer: ICMP

ICMP (Internet Control Message Protocol) is used for diagnostic and error messaging, not for routing data traffic like RIP, BGP, or OSPF.

Correct Answer: Telnet

Telnet is a network protocol used for providing a bidirectional interactive text-oriented communication facility for remote login.

Correct Answer: Process

The layers of the OSI model are Physical, Data Link, Network, Transport, Session, Presentation, and Application. 'Process' is not one of them.

Correct Answer: Star

In a star topology, all devices are connected to a central hub; if that hub fails, the entire network goes down.

Correct Answer: Transport

The Transport layer is responsible for end-to-end communication, error recovery, and flow control.

Correct Answer: Maximum transfer unit

MTU stands for Maximum Transfer Unit, which is the largest size of a data packet that can be transmitted over a network protocol.

Correct Answer: Data transfer rate

Bandwidth is the maximum capacity of a wired or wireless communications link to transmit data over a network in a given amount of time.

Correct Answer: Attenuation

Attenuation is the reduction in signal strength as it travels through a transmission medium like optical fiber.

Correct Answer: 700 MB

A standard CD-ROM typically holds 700 MB of data, whereas 4.7 GB is the standard capacity for a single-layer DVD.

Correct Answer: pptx

.pptx is the default file extension for Microsoft PowerPoint presentations created in modern versions of the software.

Correct Answer: F4

In Microsoft Excel, pressing F4 repeats the last command or action performed.

Correct Answer: Transpose

The Transpose function in Excel allows you to switch the orientation of data from rows to columns or vice versa.

Correct Answer: Logical test and return value

The IF function checks a condition and returns one value if the condition is TRUE and another if it is FALSE.

Correct Answer: Cell

A cell, formed by the intersection of a row and a column, is the fundamental unit of data entry in an Excel worksheet.

Correct Answer: F2

Pressing the F2 key allows a user to enter edit mode for the currently selected cell.

Correct Answer: Ctrl+Page Down

In Excel, Ctrl+Page Down moves to the next worksheet, while Ctrl+Page Up moves to the previous one.

Correct Answer: Insert

The Insert tab on the Excel ribbon contains the Table command used to create tables.

Correct Answer: Perform vertical lookup and return value

VLOOKUP stands for 'Vertical Lookup' and is used to search for data in a column and return a corresponding value from the same row.

Correct Answer: MAX()

The MAX() function returns the largest numeric value in a given set or range of cells.

Correct Answer: SUM()

The SUM() function is used to add all numbers in a selected range of cells.

Correct Answer: Worksheet

An Excel workbook is essentially a container file that holds one or more worksheets (or charts).

Correct Answer: MOD()

The MOD() function returns the remainder after a number is divided by a divisor.

Correct Answer: .pdf

.pdf is a document format, not a native Excel workbook format used for storing worksheet data.

Correct Answer: =SUM(A1:A10)

Wait, the original text had a typo prefix. Assuming standard syntax: '=SUM(A1:A10)' is valid. Based on typical exam questions, a formula like '$.=SUM(sales)/(10-5)' is invalid due to characters like '$' being placed incorrectly at the start.

Correct Answer: Ctrl+Z

Ctrl+Z is the universal keyboard shortcut for the undo function in most software applications.

Correct Answer: Print layout

Print Layout view shows the document as it would appear on a printed page, including headers, footers, and margins.

Correct Answer: Insert menu

The Header and Footer tools are located under the Insert tab in the ribbon of Microsoft Word.

Correct Answer: Home > Editing > Select > Select All

In the modern Office ribbon interface, the 'Select All' function is located under the Editing group within the Home tab.

Correct Answer: Visual Basic

Microsoft Office applications use Visual Basic for Applications (VBA) to automate tasks via macros.

Correct Answer: Left

Left alignment is the default paragraph setting in Microsoft Word for left-to-right languages.

Correct Answer: 11

In most modern versions of Microsoft Word (like 2013 and later), the default font size is 11 points.

Correct Answer: References

The References tab contains tools for creating tables of contents, citations, and indexes.

Correct Answer: WordArt

WordArt is the specific feature in Microsoft Word used to create stylized text with various artistic effects.

Correct Answer: Shift+F5

F5 starts the slideshow from the beginning, while Shift+F5 starts the slideshow from the current slide selected.

Correct Answer: Ctrl+M

Ctrl+M is the standard shortcut to add a new slide to a presentation in PowerPoint.

Correct Answer: powerpnt.exe

The actual executable command to launch Microsoft PowerPoint is 'powerpnt.exe'.

Correct Answer: Design tab

The Design tab in PowerPoint contains themes and variants to change the overall look and feel of your presentation.

Correct Answer: F5

The F5 key is the standard shortcut to start a presentation slideshow from the beginning.

Correct Answer: Slides

PowerPoint presentations are composed of individual slides that contain text, images, and other multimedia elements.

Correct Answer: Graphical user interface

GUI stands for Graphical User Interface, a system that allows users to interact with electronic devices through visual icons and indicators.

Correct Answer: Word processor

Google Docs is a cloud-based word processing application similar to Microsoft Word.

Correct Answer: S????

In many command-line and search utilities, '?' is the wildcard character for a single character, so 'S????' represents a 5-letter word starting with S.

Correct Answer: American standard code for information interchange

ASCII is a character encoding standard for electronic communication representing text in computers.

Correct Answer: Distributed version control system (DVCS)

Git is a widely used distributed version control system for tracking changes in source code during software development.

Correct Answer: Waterfall

The Waterfall model is a linear, sequential approach where each phase must be completed before the next begins.

Correct Answer: Agile

Scrum is one of the most popular frameworks used to implement the Agile software development methodology.

Correct Answer: WinZip

WinZip is a well-known utility software used for file compression and archiving.

Correct Answer: Gigahertz

Clock speed, which indicates how fast a CPU can execute instructions, is measured in Gigahertz (GHz).

Correct Answer: Improve storage performance

Redundant Array of Independent Disks (RAID) technology is used to increase data reliability and/or improve performance by combining multiple physical drives.

Correct Answer: Storage performance

RAID is used to improve data storage performance and/or provide data redundancy.

Correct Answer: Network interface card

An Ethernet card is a type of Network Interface Card (NIC) that connects a computer to a wired network.

Correct Answer: Archie

Archie, created in 1990, is widely considered the first search engine for the internet.

Correct Answer: Creeper

The Creeper virus, created in the early 1970s, is recognized as the first computer virus.

Correct Answer: Asymmetric

Asymmetric cryptography, or public-key cryptography, uses a pair of keys: a public key for encryption and a private key for decryption.

Correct Answer: Worm

A computer worm is a standalone malware program that replicates itself in order to spread to other computers.

Correct Answer: Bill Gates & Paul Allen

Bill Gates and Paul Allen co-founded Microsoft in 1975.

Correct Answer: Translate code into machine code

A compiler transforms source code written in a high-level programming language into machine code that a computer's processor can execute.

Correct Answer: Python

Python is the most popular language for AI and machine learning due to its extensive libraries and ease of use.

Correct Answer: Debugging

Debugging is the systematic process of identifying, analyzing, and removing errors or 'bugs' in software code.

Correct Answer: using float

'using' is a keyword in C++ for namespace or type aliasing, not a data type itself.

Correct Answer: Operands and operators

An expression in programming is a combination of values (operands) and mathematical or logical symbols (operators) that evaluate to a single result.

Correct Answer: Name macro

When creating a macro, the process generally involves opening the recorder, naming the macro, assigning a shortcut (optional), and then performing the actions to be recorded.

Correct Answer: Submit

SQL uses commands like INSERT, DELETE, and UPDATE. 'Submit' is not a standard SQL query language command.

Correct Answer: All of these

A primary key is a unique identifier for a record in a table, must contain unique values, and is often implemented as an auto-incrementing number.

Correct Answer: Column linking a primary key

A foreign key is a field in one table that links to the primary key of another table to establish a relationship.

Correct Answer: Field

A field is the smallest unit of data in a database, representing a single piece of information, such as a name or age.

Correct Answer: External server database

An external database typically refers to a database hosted on a separate server or environment from the application accessing it.

Correct Answer: Relation

In relational database theory, a table is formally referred to as a 'relation'.

Correct Answer: Speed up search

Database indexing creates a data structure that allows the system to find and retrieve specific records much faster than scanning the entire table.

Correct Answer: 0 and 1

The binary number system uses only two digits, 0 and 1, to represent all numerical values.

Correct Answer: Binary

Computers operate using the binary number system, based on 0s and 1s, which correspond to electronic 'off' and 'on' states.

Correct Answer: LIFO

A stack operates on the Last-In, First-Out (LIFO) principle, where the last item added is the first one to be removed.

Correct Answer: Complete graph

A complete graph is a simple undirected graph in which every pair of distinct vertices is connected by a unique edge.

Correct Answer: Blockchain

Blockchain is the most well-known technology that utilizes a distributed ledger to record transactions securely.

Correct Answer: Recovery process

Checkpoints (or save points) are used in databases and OS systems to create a consistent state to return to in case of failure.

Correct Answer: Computer

Just as a lock secures a door, a password secures a computer (or account).