This fully mcqs for the Computer Operator position in a Khyber Pakhtunkhwa (KPK) Public Sector Organization. This guide provides all 100 MCQs with detailed explanations for Computer Science, Mathematics, English, and General Knowledge.
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_____ is the collection of all those parts of computer system, which are actually working during the processing of data to get information:
Hardware refers to the physical components (like CPU and RAM) that execute the actual processing of data.
RAM (Random Access Memory) is also called:
RAM is volatile memory that allows the computer to both read data from and write data to it during operation.
A _____ may be defined as "the memory required to store a single alphanumeric character of data":
One byte (8 bits) is the standard unit used to represent a single character, such as a letter or number.
A byte is a combination of:
A byte equals 8 bits; since 1 nibble is 4 bits, 2 nibbles also make a byte.
Each node in star topology is connected to a _____ minicomputer which controls the network:
In a star topology, all devices are connected to a central hub or switch that manages data traffic.
The _____ sign indicates that this is an instruction for the compiler:
In C/C++, the # symbol denotes a preprocessor directive, which tells the compiler to perform specific actions before actual compilation.
A "C" program consists of _____ function/functions:
A C program must have at least one function (main) but can contain many more.
Each type of computer has its own machine language which consists of _____:
Machine language is binary code, composed entirely of 0s and 1s.
A High Level Language is much powerful programming tool than _____ language:
Assembly is a low-level language; High-Level Languages (HLL) are more powerful because they are easier to write and more portable.
Most of the C compiler use Integrated Development Environment (IDE) to _____ a simple program:
An IDE provides all the tools necessary to write, compile, link, and run code in one interface.
Constants are quantities whose values _____ during program execution:
By definition, a constant remains fixed and cannot be altered once the program is running.
Floating-point constants are also called:
Floating-point numbers represent real numbers (fractions/decimals), hence they are called real constants.
In C/C++, the _____ is used to issue a new line:
The escape sequence \n moves the output cursor to the beginning of the next line.
Relational operators are used to compare _____ values of the same type:
Relational operators (like <,>) compare two operands to determine their relationship.
Syntax errors result when the _____ of the programming language are not followed:
Syntax errors occur when the grammatical rules or syntax of a language are violated.
Which of the following is arithmetic operator?
The asterisk (*) is used for the arithmetic operation of multiplication.
In a structured program, the logical flow is governed by _____ basic control structures:
The three structures are Sequence, Selection (if/else), and Iteration (loops).
Loop provides a way for you to repeat _____ statement/statements as many times as your application requires:
Loops can repeat a single line of code or a block of multiple statements.
The Currency of Canada is:
Canada uses the Canadian Dollar (CAD).
What is meant by solstice?
A solstice occurs when the Sun reaches its highest or lowest point in the sky at noon, resulting in the longest or shortest day.
In which continent is the Alps Mountain to be found?
The Alps are the highest and most extensive mountain range system that lies entirely in Europe.
Sri Lanka is an island which is located in:
Sri Lanka is an island nation located in South Asia, specifically in the Indian Ocean.
The world largest lake is located in:
The Caspian Sea, considered the world's largest lake, is located in Asia.
Which of the following is the second largest ocean in the world?
The Pacific is the largest, and the Atlantic is the second-largest ocean.
"Mumbai" is the sea port of:
Mumbai is a major port city on the west coast of India.
Which of the following is the Capital of Brazil?
Brasilia was inaugurated as the capital of Brazil in 1960.
Security Council comprises of how many members?
The UN Security Council consists of 5 permanent members and 10 non-permanent members.
APP is the news agency of:
APP stands for Associated Press of Pakistan.
Ariana Airline is an airline of:
Ariana Afghan Airlines is the largest airline of Afghanistan.
The International Rice Research Institute is located in:
IRRI is headquartered in Los Baños, Philippines.
Which of the following is the old name of Bangladesh?
Before independence in 1971, Bangladesh was the eastern wing of Pakistan, known as East Pakistan.
Which of the following country is called 'Land of Lilies' ?
Canada is often referred to as the Land of Lilies.
_____ is the highest military award of Pakistan:
Nishan-e-Haider is Pakistan's highest military gallantry award.
When was Organization of the Islamic Conference (OIC) established?
The OIC was founded in September 1969 following a summit in Rabat, Morocco.
Ukraine shares border with how many European Union member states?
Ukraine borders Poland, Slovakia, Hungary, and Romania, all of which are EU members.
Which of the following country has largest labour force?
Due to its massive population, China has the world's largest labor force.
Science is originated from a Latin word Scientia, which means to:
"Scientia" translates to "knowledge" or "to know" .
Campbellpur is the old name of:
Attock city was formerly known as Campbellpur in honor of Sir Colin Campbell.
Product of the roots of the equation $2x^2 - 3x - 4=0$ are:
For $ax^2 + bx + c=0$, the product of roots is $c/a$. Here, $-4/2=-2$.
$sqrt{16x^4 - 24x^3 + 25x^2 - 12x + 4}=_____$:
Expanding $(4x^2 - 3x + 2)^2$ yields the expression inside the square root.
Find an expression for the perimeter of a rectangle whose area is given by $x^2 + 13x - 90$:
Factoring the area gives $(x+18)(x-5)$. Perimeter $=2(Length + Width)=2(x+18 + x-5)=2(2x+13)=4x+26$.
$V propto frac{1}{P}$ and $P=300 ext{ N/m}^2$ when $V=4 ext{ m}^3$. Find P when $V=3 ext{ m}^3$.
Since $PV=k$, $300 imes 4=1200$. When $V=3$, $P=1200/3=400$.
The distance between two points with coordinates $(1, -5)$ and $(x, 7)$ is $6sqrt{5}$. What is the value of $x$?
Using the distance formula $sqrt{(x-1)^2 + (7 - (-5))^2}=6sqrt{5}$, solving for $x$ yields 7.
Find the value of $x^4 + frac{1}{x^4}$ when $x + frac{1}{x}=2$:
If $x + frac{1}{x}=2$, then $x=1$. Therefore, $1^4 + frac{1}{1^4}=2$.
A 20m ladder is leaned against a wall. If the base of the ladder is 16m from the wall, how high up the wall will the ladder reach?
Using Pythagoras theorem: $h^2=20^2 - 16^2=400 - 256=144$. $sqrt{144}=12$.
The sum of Rs.65,000 is divided among three brothers Hamza, Junaid and Awais... Find the share of Junaid.
Let Awais $=x$, Junaid $=4x$, Hamza $=8x$. $13x=65000 ightarrow x=5000$. Junaid $(4x)=20000$.
Find the third proportion of 5 and $5sqrt{3}$:
$5 : 5sqrt{3}=5sqrt{3} : x ightarrow 5x=(5sqrt{3})^2=75$. $x=15$.
The bisectors of the angles of a triangle are:
The three angle bisectors of a triangle always intersect at a single point (the incenter), making them concurrent.
Crawling down the stairs is dangerous for babies. [Identify underlined phrase: "Crawling down the stairs" ]
"Crawling" is a verb acting as a noun, making it a gerund.
She did not eat any fruit. [Identify "any" ]
"Any" describes the noun "fruit," so it functions as an adjective.
Jim works _____ than his brother.
"Than" indicates a comparison between two people, requiring the comparative degree "harder" .
Do not tease the beggar. [Passive voice]
Imperative negative sentences are changed to passive using "Let + object + not + be + V3" .
Wait _____ tomorrow.
"Till" is used to indicate waiting up to a specific time in the future.
Jane is not coming today as she is ill. [Identify clause: "as she is ill" ]
It explains "why" she is not coming, which is the function of an adverbial clause of reason.
I could catch the kite. [Passive voice]
Modal passive is formed by "Modal + be + V3" .
Prevention is _____ than cure.
Comparing two things (prevention and cure) requires the comparative "better" .
This is a _____ movie.
Adjectives follow the order: Opinion (Wonderful), Age (new), Origin (Pakistani).
Weather forecaster, frequently make mistakes. [Identify "frequently" ]
It describes the frequency of the verb "make," hence it is an adverb.
The _____ tag is used when you want to end a line, but do not want to start a new paragraph:
The <br> tag inserts a single line break.
Metadata is data about _____:
Metadata provides information about other data to make it easier to find and manage.
DHTML is a combination of technologies used to create dynamic web sites:
DHTML stands for Dynamic Hypertext Markup Language.
Data is a plural form of the Latin word:
Datum is the singular form, and data is the plural form.
In Data Base, tables organize data into columns called:
In database terminology, columns are "fields" and rows are "records".
A _____ is an integrated collection of data that is shared by all the organizational users:
A database is designed to be a central repository for shared organizational data.
Database store data and information extracted from selected _____ databases:
Data warehouses often pull from both internal daily operations and external sources.
A data warehouse stores data from _____:
Data warehouses are designed for historical analysis, keeping both current and past data.
A point-to-point protocol over Ethernet is a network protocol for:
PPPoE (Point-to-Point Protocol over Ethernet) encapsulates PPP frames within Ethernet frames.
High speed Ethernet works on:
Optical fiber supports the highest bandwidth and speeds for modern Ethernet.
A website following the _____ business model sells its products to an intermediate buyer...
Business-to-Business (B2B) involves transactions between businesses rather than direct to consumers.
A website following the _____ business model sells its products directly to a customer:
Business-to-Consumer (B2C) refers to selling directly to the end user.
An e-commerce payment system facilitates the acceptance of _____ for online transactions:
It specifically enables electronic or online payment methods.
A debit card is also known as a:
Debit cards are linked to bank accounts and function like electronic checks.
A stored value card is a _____ with a monetary value stored on the card itself:
Gift cards or transit cards are types of stored-value payment cards.
The current generation of smart card includes _____ with programmable function:
Integrated Circuit (IC) chips allow smart cards to process data securely.
A sequence of characters is generally known as a:
In programming, a "string" is the data type for text or character sequences.
In C/C++, the puts() function can only output _____ string/strings at a time:
puts() accepts a single string argument and automatically adds a newline.
A Database Management System (DBMS) is the software that manages _____:
DBMS software like MySQL or Oracle is specifically for managing databases.
A data model is an abstract representation of the data about _____ within an organization:
Data models define entities, their attributes, and their relationships.
A Hierarchical is a familiar structure, here records are stored in the form of a _____:
Hierarchical databases use a parent-child or tree-like structure.
DDL statements are a subset of SQL statements used to _____ oracle 8 database structure:
Data Definition Language (DDL) includes commands like CREATE, ALTER, and DROP.
MS-Access is used to _____ a large amount of information:
MS-Access is a relational database tool used for storing and editing data.
_____ plays a significant role mostly in the form of computer based Information system Management Information System (MIS):
Computers are the backbone of modern MIS.
As computer is a very important tool for _____ production of our needed information:
Computers process data much faster and with fewer errors than manual methods.
The teacher said, "The Earth moves around the Sun." [Indirect speech]
Tense does not change for universal truths in indirect speech.
Would you like to go to the museum or to the zoo? [Identify sentence type]
It connects two independent ideas with the coordinating conjunction "or".
She eats an apple. [Choose past simple form]
Past simple interrogative uses "Did + subject + V1".
Because I paid attention, I got an A on the test and I was so happy. [Identify sentence type]
It has one dependent clause ("Because...") and two independent clauses joined by "and".
If you _____ brush your teeth regularly, your teeth decays:
Present simple negative for "you" uses "do not".
The plural form of the word, "quiz" is _____:
Words ending in "z" often double the "z" before adding "es" for plurals.
He said to me, "When did you finish your lesson?" [Indirect speech]
Past simple ("did finish") changes to past perfect ("had finished") in indirect speech.
The opposite form of the word, "stand" is:
"Lie" (down) is the physical opposite of standing.
The masculine of the word, "stewardess" is:
Steward is the male equivalent of a stewardess.
The antonym of the word, "fear" is _____:
Courage is the state of being without fear or facing it.
After obtaining the IP address, to prevent the IP conflict the client may use:
Gratuitous ARP is often used to detect if an IP is already in use on the network.
What is DHCP snooping?
DHCP snooping is a Layer 2 security feature that filters untrusted DHCP messages.
A DNS client is called:
The resolver is the client-side component that initiates the query to convert a domain name into an IP.
Network congestion occurs:
Congestion happens when data being sent exceeds the capacity of the network link.
Which one of the following extends a private network across public networks?
A VPN creates a secure "tunnel" across public internet to connect remote users to a private network.
Ethernet frame consists of:
An Ethernet frame header contains MAC addresses, but it encapsulates IP packets which contain IP addresses.
Which of the following protocols is used by World Wide Web (www)?
Hypertext Transfer Protocol (HTTP) is the foundational protocol for transferring data on the web.
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