KPK Public Sector Organization Computer Operator Solved Past Paper by ETEA

Fully solved past paper 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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1. _____ is the collection of all those parts of computer system, which are actually working during the processing of data to get information:
A) Hardware
B) Software
C) Program
D) Instruction
Correct Option: A
Explanation: Hardware refers to the physical components (like CPU and RAM) that execute the actual processing of data.

2. RAM (Random Access Memory) is also called:
A) Read Memory
B) Write Memory
C) Both (A) & (B)
D) None of the above
Correct Option: C
Explanation: RAM is volatile memory that allows the computer to both read data from and write data to it during operation.

3. A _____ may be defined as "the memory required to store a single alphanumeric character of data":
A) Bit
B) Byte
C) Kilo byte
D) Mega byte
Correct Option: B
Explanation: One byte (8 bits) is the standard unit used to represent a single character, such as a letter or number.

4. A byte is a combination of:
A) 8 bits
B) 2 nibbles
C) Both (A) & (B)
D) None of the above
Correct Option: C
Explanation: A byte equals 8 bits; since 1 nibble is 4 bits, 2 nibbles also make a byte.

5. Each node in star topology is connected to a _____ minicomputer which controls the network:
A) Corner
B) Side
C) Central
D) All of the above
Correct Option: C
Explanation: In a star topology, all devices are connected to a central hub or switch that manages data traffic.

6. The _____ sign indicates that this is an instruction for the compiler:
A) .
B) //
C) #
D) @
Correct Option: C
Explanation: In C/C++, the # symbol denotes a preprocessor directive, which tells the compiler to perform specific actions before actual compilation.

7. A "C" program consists of _____ function/functions:
A) One
B) More
C) Both (A) & (B)
D) None of the above
Correct Option: C
Explanation: A C program must have at least one function (main) but can contain many more.

8. Each type of computer has its own machine language which consists of _____:
A) Zeros
B) Ones
C) Both (A) & (B)
D) None of the above
Correct Option: C
Explanation: Machine language is binary code, composed entirely of 0s and 1s.

9. A High Level Language is much powerful programming tool than _____ language:
A) C
B) C++
C) C#
D) Assembly language
Correct Option: D
Explanation: Assembly is a low-level language; High-Level Languages (HLL) are more powerful because they are easier to write and more portable.

10. Most of the C compiler use Integrated Development Environment (IDE) to _____ a simple program:
A) Compile
B) Link
C) Execute
D) All of the above
Correct Option: D
Explanation: An IDE provides all the tools necessary to write, compile, link, and run code in one interface.

11. Constants are quantities whose values _____ during program execution:
A) Do not change
B) Change
C) Will change
D) None of the above
Correct Option: A
Explanation: By definition, a constant remains fixed and cannot be altered once the program is running.

12. Floating-point constants are also called:
A) Constants
B) Float
C) Floating constants
D) Real constants
Correct Option: D
Explanation: Floating-point numbers represent real numbers (fractions/decimals), hence they are called real constants.

13. In C/C++, the _____ is used to issue a new line:
A) \n
B) \\n
C) \new
D) \new line
Correct Option: A
Explanation: The escape sequence \n moves the output cursor to the beginning of the next line.

14. Relational operators are used to compare _____ values of the same type:
A) Two
B) Three
C) Four
D) Five
Correct Option: A
Explanation: Relational operators (like <,>) compare two operands to determine their relationship.

15. Syntax errors result when the _____ of the programming language are not followed:
A) Rules
B) Syntax
C) Both (A) & (B)
D) System
Correct Option: C
Explanation: Syntax errors occur when the grammatical rules or syntax of a language are violated.

16. Which of the following is arithmetic operator?
A) @
B) &
C) <
D) *
Correct Option: D
Explanation: The asterisk (*) is used for the arithmetic operation of multiplication.

17. In a structured program, the logical flow is governed by _____ basic control structures:
A) Two
B) Three
C) Four
D) Five
Correct Option: B
Explanation: The three structures are Sequence, Selection (if/else), and Iteration (loops).

18. Loop provides a way for you to repeat _____ statement/statements as many times as your application requires:
A) One
B) More
C) Both (A) & (B)
D) None of the above
Correct Option: C
Explanation: Loops can repeat a single line of code or a block of multiple statements.

19. The Currency of Canada is:
A) Euro
B) Pond
C) Dollar
D) Franc
Correct Option: C
Explanation: Canada uses the Canadian Dollar (CAD).

20. What is meant by solstice?
A) When sun reaches its maximum
B) The longest night
C) When sun goes through equator
D) None of the above
Correct Option: A
Explanation: A solstice occurs when the Sun reaches its highest or lowest point in the sky at noon, resulting in the longest or shortest day.

21. In which continent is the Alps Mountain to be found?
A) Africa
B) Asia
C) Europe
D) North America
Correct Option: C
Explanation: The Alps are the highest and most extensive mountain range system that lies entirely in Europe.

22. Sri Lanka is an island which is located in:
A) Arabian Sea
B) Pacific Ocean
C) Indian Ocean
D) None of the above
Correct Option: C
Explanation: Sri Lanka is an island nation located in South Asia, specifically in the Indian Ocean.

23. The world largest lake is located in:
A) Africa
B) Europe
C) Antarctica
D) Asia
Correct Option: D
Explanation: The Caspian Sea, considered the world's largest lake, is located in Asia.

24. Which of the following is the second largest ocean in the world?
A) Arctic Ocean
B) Southern Ocean
C) Atlantic Ocean
D) Pacific Ocean
Correct Option: C
Explanation: The Pacific is the largest, and the Atlantic is the second-largest ocean.

25. "Mumbai" is the sea port of:
A) Nepal
B) Sri Lanka
C) Russia
D) India
Correct Option: D
Explanation: Mumbai is a major port city on the west coast of India.

26. Which of the following is the Capital of Brazil?
A) Kyiv
B) Basseterre
C) Brasilia
D) Beirut
Correct Option: C
Explanation: Brasilia was inaugurated as the capital of Brazil in 1960.

27. Security Council comprises of how many members?
A) 15
B) 17
C) 25
D) 20
Correct Option: A
Explanation: The UN Security Council consists of 5 permanent members and 10 non-permanent members.

28. APP is the news agency of:
A) France
B) Pakistan
C) Malaysia
D) Bangladesh
Correct Option: B
Explanation: APP stands for Associated Press of Pakistan.

29. Ariana Airline is an airline of:
A) Pakistan
B) Afghanistan
C) Iran
D) Iraq
Correct Option: B
Explanation: Ariana Afghan Airlines is the largest airline of Afghanistan.

30. The International Rice Research Institute is located in:
A) Philippines
B) Indonesia
C) Thailand
D) Malaysia
Correct Option: A
Explanation: IRRI is headquartered in Los Baños, Philippines.

31. Which of the following is the old name of Bangladesh?
A) Batavia
B) East Pakistan
C) West Pakistan
D) Burma
Correct Option: B
Explanation: Before independence in 1971, Bangladesh was the eastern wing of Pakistan, known as East Pakistan.

32. Which of the following country is called 'Land of Lilies' ?
A) Belgium
B) Norway
C) Sweden
D) Canada
Correct Option: D
Explanation: Canada is often referred to as the Land of Lilies.

33. _____ is the highest military award of Pakistan:
A) Nishan-e-Pakistan
B) Nishan-e-Haider
C) Nishan-e-Imtiaz
D) Iron Cross
Correct Option: B
Explanation: Nishan-e-Haider is Pakistan's highest military gallantry award.

34. When was Organization of the Islamic Conference (OIC) established?
A) 1969
B) 1970
C) 1972
D) 1973
Correct Option: A
Explanation: The OIC was founded in September 1969 following a summit in Rabat, Morocco.

35. Ukraine shares border with how many European Union member states?
A) three
B) Six
C) Four
D) Eight
Correct Option: C
Explanation: Ukraine borders Poland, Slovakia, Hungary, and Romania, all of which are EU members.

36. Which of the following country has largest labour force?
A) Brazil
B) China
C) Canada
D) Indonesia
Correct Option: B
Explanation: Due to its massive population, China has the world's largest labor force.

37. Science is originated from a Latin word Scientia, which means to:
A) Behave
B) Teach
C) Act
D) Know
Correct Option: D
Explanation: "Scientia" translates to "knowledge" or "to know" .

38. Campbellpur is the old name of:
A) Pak Pattan
B) Lahore
C) Attock
D) Peshawar
Correct Option: C
Explanation: Attock city was formerly known as Campbellpur in honor of Sir Colin Campbell.

39. Product of the roots of the equation $2x^2 - 3x - 4=0$ are:
A) $-3/2$
B) $3/2$
C) 2
D) -2
Correct Option: D
Explanation: For $ax^2 + bx + c=0$, the product of roots is $c/a$. Here, $-4/2=-2$.

40. $\sqrt{16x^4 - 24x^3 + 25x^2 - 12x + 4}=_____$:
A) $\pm(4x^2 - 3x + 2)$
B) $\pm(4x^2 + 3x + 2)$
C) $\pm(4x^2 + 3x - 2)$
D) $\pm(4x^2 - 3x - 2)$
Correct Option: A
Explanation: Expanding $(4x^2 - 3x + 2)^2$ yields the expression inside the square root.

41. Find an expression for the perimeter of a rectangle whose area is given by $x^2 + 13x - 90$:
A) $2x + 16$
B) $4x + 26$
C) $3x - 24$
D) $6x - 18$
Correct Option: B
Explanation: Factoring the area gives $(x+18)(x-5)$. Perimeter $=2(Length + Width)=2(x+18 + x-5)=2(2x+13)=4x+26$.

42. $V \propto \frac{1}{P}$ and $P=300\text{ N/m}^2$ when $V=4\text{ m}^3$. Find P when $V=3\text{ m}^3$.
A) $400\text{ N/m}^2$
B) $350\text{ N/m}^2$
C) $250\text{ N/m}^2$
D) $200\text{ N/m}^2$
Correct Option: A
Explanation: Since $PV=k$, $300 \times 4=1200$. When $V=3$, $P=1200/3=400$.

43. The distance between two points with coordinates $(1, -5)$ and $(x, 7)$ is $6\sqrt{5}$. What is the value of $x$?
A) 3
B) 4
C) 7
D) 6
Correct Option: C
Explanation: Using the distance formula $\sqrt{(x-1)^2 + (7 - (-5))^2}=6\sqrt{5}$, solving for $x$ yields 7.

44. Find the value of $x^4 + \frac{1}{x^4}$ when $x + \frac{1}{x}=2$:
A) 2
B) 4
C) 8
D) 16
Correct Option: A
Explanation: If $x + \frac{1}{x}=2$, then $x=1$. Therefore, $1^4 + \frac{1}{1^4}=2$.

45. 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?
A) 6m
B) 8m
C) 10m
D) 12m
Correct Option: D
Explanation: Using Pythagoras theorem: $h^2=20^2 - 16^2=400 - 256=144$. $\sqrt{144}=12$.

46. The sum of Rs.65,000 is divided among three brothers Hamza, Junaid and Awais... Find the share of Junaid.
A) Rs.5,000
B) Rs.20,000
C) Rs.40,000
D) Rs.10,000
Correct Option: B
Explanation: Let Awais $=x$, Junaid $=4x$, Hamza $=8x$. $13x=65000 \rightarrow x=5000$. Junaid $(4x)=20000$.

47. Find the third proportion of 5 and $5\sqrt{3}$:
A) $10\sqrt{3}$
B) 15
C) 18
D) $20\sqrt{3}$
Correct Option: B
Explanation: $5 : 5\sqrt{3}=5\sqrt{3} : x \rightarrow 5x=(5\sqrt{3})^2=75$. $x=15$.

48. The bisectors of the angles of a triangle are:
A) Congruent
B) Concurrent
C) Parallel to each other
D) Perpendicular to each other
Correct Option: B
Explanation: The three angle bisectors of a triangle always intersect at a single point (the incenter), making them concurrent.

49. Crawling down the stairs is dangerous for babies. [Identify underlined phrase: "Crawling down the stairs" ]
A) Prepositional phrase
B) Verb phrase
C) Gerund phrase
D) Noun phrase
Correct Option: C
Explanation: "Crawling" is a verb acting as a noun, making it a gerund.

50. She did not eat any fruit. [Identify "any" ]
A) Adjective
B) Noun
C) Adverb
D) Preposition
Correct Option: A
Explanation: "Any" describes the noun "fruit," so it functions as an adjective.

51. Jim works _____ than his brother.
A) Hard
B) Hardest
C) Harder
D) Both (B) & (C)
Correct Option: C
Explanation: "Than" indicates a comparison between two people, requiring the comparative degree "harder" .

52. Do not tease the beggar. [Passive voice]
A) Let the beggar not be teased.
B) Let the beggar don't be teased.
C) Let the beggar not teased.
D) The beggar not be teased.
Correct Option: A
Explanation: Imperative negative sentences are changed to passive using "Let + object + not + be + V3" .

53. Wait _____ tomorrow.
A) with
B) till
C) for
D) of
Correct Option: B
Explanation: "Till" is used to indicate waiting up to a specific time in the future.

54. Jane is not coming today as she is ill. [Identify clause: "as she is ill" ]
A) Noun clause
B) Adjective clause
C) Adverb clause
D) None of the above
Correct Option: C
Explanation: It explains "why" she is not coming, which is the function of an adverbial clause of reason.

55. I could catch the kite. [Passive voice]
A) The kite could be caught by me.
B) The kite could caught by me.
C) The kite could be catch by me.
D) The kite would be caught by me.
Correct Option: A
Explanation: Modal passive is formed by "Modal + be + V3" .

56. Prevention is _____ than cure.
A) Best
B) Better
C) Good
D) None of the above
Correct Option: B
Explanation: Comparing two things (prevention and cure) requires the comparative "better" .

57. This is a _____ movie.
A) New Pakistani wonderful
B) Wonderful Pakistani new
C) Wonderful new Pakistani
D) None of the above
Correct Option: C
Explanation: Adjectives follow the order: Opinion (Wonderful), Age (new), Origin (Pakistani).

58. Weather forecaster, frequently make mistakes. [Identify "frequently" ]
A) Noun
B) Adverb
C) Adjective
D) Preposition
Correct Option: B
Explanation: It describes the frequency of the verb "make," hence it is an adverb.

59. The _____ tag is used when you want to end a line, but do not want to start a new paragraph:
A) <break>
B) <br>
C)
<hr>
D) <bk>
Correct Option: B
Explanation: The
tag inserts a single line break.

60. Metadata is data about _____:
A) Company
B) Database
C) Data
D) Information
Correct Option: C
Explanation: Metadata provides information about other data to make it easier to find and manage.

61. DHTML is a combination of technologies used to create dynamic web sites:
A) Dynamic HTML
B) Data HTML
C) Design HTML
D) None of the above
Correct Option: A
Explanation: DHTML stands for Dynamic Hypertext Markup Language.

62. Data is a plural form of the Latin word:
A) Datnum
B) Datnur
C) Datum
D) Datmn
Correct Option: C
Explanation: Datum is the singular form, and data is the plural form.

63. In Data Base, tables organize data into columns called:
A) Record
B) Fields
C) Cells
D) All of the above
Correct Option: B
Explanation: In database terminology, columns are "fields" and rows are "records".

64. A _____ is an integrated collection of data that is shared by all the organizational users:
A) Program
B) Compiler
C) Interpreter
D) Database
Correct Option: D
Explanation: A database is designed to be a central repository for shared organizational data.

65. Database store data and information extracted from selected _____ databases:
A) Operational
B) External
C) Both (A) & (B)
D) None of the above
Correct Option: C
Explanation: Data warehouses often pull from both internal daily operations and external sources.

66. A data warehouse stores data from _____:
A) Current years
B) Previous years
C) Both (A) & (B)
D) None of the above
Correct Option: C
Explanation: Data warehouses are designed for historical analysis, keeping both current and past data.

67. A point-to-point protocol over Ethernet is a network protocol for:
A) encapsulating PPP frames inside Ethernet frames
B) encapsulating Ethernet frames inside PPP frames
C) for security of Ethernet frames
D) for security of PPP frames
Correct Option: A
Explanation: PPPoE (Point-to-Point Protocol over Ethernet) encapsulates PPP frames within Ethernet frames.

68. High speed Ethernet works on:
A) Coaxial cable
B) Twisted pair cable
C) Optical fiber
D) None of the above
Correct Option: C
Explanation: Optical fiber supports the highest bandwidth and speeds for modern Ethernet.

69. A website following the _____ business model sells its products to an intermediate buyer...
A) New
B) B2B
C) Updated
D) Foreign
Correct Option: B
Explanation: Business-to-Business (B2B) involves transactions between businesses rather than direct to consumers.

70. A website following the _____ business model sells its products directly to a customer:
A) B2B
B) B2C
C) Foreign
D) New
Correct Option: B
Explanation: Business-to-Consumer (B2C) refers to selling directly to the end user.

71. An e-commerce payment system facilitates the acceptance of _____ for online transactions:
A) payment
B) online payment
C) Manual payment
D) Direct payment
Correct Option: B
Explanation: It specifically enables electronic or online payment methods.

72. A debit card is also known as a:
A) Bank card
B) Check card
C) Both (A) & (B)
D) None of the above
Correct Option: C
Explanation: Debit cards are linked to bank accounts and function like electronic checks.

73. A stored value card is a _____ with a monetary value stored on the card itself:
A) Payment card
B) Value card
C) Access card
D) Money card
Correct Option: A
Explanation: Gift cards or transit cards are types of stored-value payment cards.

74. The current generation of smart card includes _____ with programmable function:
A) IC chips
B) ID chips
C) IK chips
D) None
Correct Option: A
Explanation: Integrated Circuit (IC) chips allow smart cards to process data securely.

75. A sequence of characters is generally known as a:
A) String
B) Variable
C) Constant
D) Function
Correct Option: A
Explanation: In programming, a "string" is the data type for text or character sequences.

76. In C/C++, the puts() function can only output _____ string/strings at a time:
A) one
B) two
C) three
D) four
Correct Option: A
Explanation: puts() accepts a single string argument and automatically adds a newline.

77. A Database Management System (DBMS) is the software that manages _____:
A) Offices
B) Programs
C) Database
Correct Option: C
Explanation: DBMS software like MySQL or Oracle is specifically for managing databases.

78. A data model is an abstract representation of the data about _____ within an organization:
A) Entities
B) Events
C) Activities and their association
D) All of the above
Correct Option: D
Explanation: Data models define entities, their attributes, and their relationships.

79. A Hierarchical is a familiar structure, here records are stored in the form of a _____:
A) Line
B) Tree
C) Table
D) Page
Correct Option: B
Explanation: Hierarchical databases use a parent-child or tree-like structure.

80. DDL statements are a subset of SQL statements used to _____ oracle 8 database structure:
A) Create
B) Modify
C) Remove
D) All of the above
Correct Option: D
Explanation: Data Definition Language (DDL) includes commands like CREATE, ALTER, and DROP.

81. MS-Access is used to _____ a large amount of information:
A) Store
B) Manipulate
C) Both (A) & (B)
D) Control
Correct Option: C
Explanation: MS-Access is a relational database tool used for storing and editing data.

82. _____ plays a significant role mostly in the form of computer based Information system Management Information System (MIS):
A) Computer
B) IT
C) Documents
D) Officer
Correct Option: A
Explanation: Computers are the backbone of modern MIS.

83. As computer is a very important tool for _____ production of our needed information:
A) Quick
B) Accurate
C) Both (A) & (B)
D) None of the above
Correct Option: C
Explanation: Computers process data much faster and with fewer errors than manual methods.

84. The teacher said, "The Earth moves around the Sun." [Indirect speech]
A) The teacher said that the Earth had moved...
B) The teacher said that the Earth was moving...
C) The teacher said that the Earth moves around the Sun.
D) The teacher said that the Earth moved...
Correct Option: C
Explanation: Tense does not change for universal truths in indirect speech.

85. Would you like to go to the museum or to the zoo? [Identify sentence type]
A) Simple
B) Compound
C) Complex
D) None of the above
Correct Option: B
Explanation: It connects two independent ideas with the coordinating conjunction "or".

86. She eats an apple. [Choose past simple form]
A) Does she eat an apple?
B) Did she eat an apple?
C) Is she eat an apple?
D) None of the above
Correct Option: B
Explanation: Past simple interrogative uses "Did + subject + V1".

87. Because I paid attention, I got an A on the test and I was so happy. [Identify sentence type]
A) Simple sentence
B) Compound sentence
C) Compound-complex sentence
D) Complex sentence
Correct Option: C
Explanation: It has one dependent clause ("Because...") and two independent clauses joined by "and".

88. If you _____ brush your teeth regularly, your teeth decays:
A) Do not
B) Does not
C) Did not
D) None of the above
Correct Option: A
Explanation: Present simple negative for "you" uses "do not".

89. The plural form of the word, "quiz" is _____:
A) Quizs
B) Quizzes
C) Quizes
D) Quizies
Correct Option: B
Explanation: Words ending in "z" often double the "z" before adding "es" for plurals.

90. He said to me, "When did you finish your lesson?" [Indirect speech]
A) He asked me when I had finished...
B) He asked me when I have finished...
C) He asked me when I finished...
D) He asked me when I did finish...
Correct Option: A
Explanation: Past simple ("did finish") changes to past perfect ("had finished") in indirect speech.

91. The opposite form of the word, "stand" is:
A) Jump
B) Run
C) Lie
D) Climb
Correct Option: C
Explanation: "Lie" (down) is the physical opposite of standing.

92. The masculine of the word, "stewardess" is:
A) Steward
B) Host
C) Niece
D) Princess
Correct Option: A
Explanation: Steward is the male equivalent of a stewardess.

93. The antonym of the word, "fear" is _____:
A) Fight
B) Courage
C) Talk
D) Reward
Correct Option: B
Explanation: Courage is the state of being without fear or facing it.

94. After obtaining the IP address, to prevent the IP conflict the client may use:
A) internet relay chat
B) broader gateway protocol
C) address resolution protocol (ARP)
D) None of the above
Correct Option: C
Explanation: Gratuitous ARP is often used to detect if an IP is already in use on the network.

95. What is DHCP snooping?
A) Techniques applied to ensure the security of an existing DHCP infrastructure
B) encryption of the DHCP server requests
C) algorithm for DHCP
D) None of the above
Correct Option: A
Explanation: DHCP snooping is a Layer 2 security feature that filters untrusted DHCP messages.

96. A DNS client is called:
A) DNS updater
B) DNS resolver
C) DNS handler
D) None of the above
Correct Option: B
Explanation: The resolver is the client-side component that initiates the query to convert a domain name into an IP.

97. Network congestion occurs:
A) In case of traffic overloading
B) When a system terminates
C) When connection between two nodes terminates
D) None of the above
Correct Option: A
Explanation: Congestion happens when data being sent exceeds the capacity of the network link.

98. Which one of the following extends a private network across public networks?
A) local area network
B) virtual private network (VPN)
C) enterprise private network
D) storage area network
Correct Option: B
Explanation: A VPN creates a secure "tunnel" across public internet to connect remote users to a private network.

99. Ethernet frame consists of:
A) MAC address
B) IP address
C) Both (A) & (B)
D) None of the above
Correct Option: C
Explanation: An Ethernet frame header contains MAC addresses, but it encapsulates IP packets which contain IP addresses.

100. Which of the following protocols is used by World Wide Web (www)?
A) TCP/IP
B) HTTP
C) FTP
D) Ethernet
Correct Option: B
Explanation: Hypertext Transfer Protocol (HTTP) is the foundational protocol for transferring data on the web.