Practice Test For Sindh Police
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Questions and Answers
- 1.
The time required for the fetching and execution of one simple machine instruction is?
- A.
Delay Time
- B.
Seek Time
- C.
CPU Cycle
- D.
Real Time
Correct Answer
C. CPU CycleExplanation
The time required for the fetching and execution of one simple machine instruction is referred to as the CPU Cycle. This cycle includes the time taken to fetch the instruction from memory, decode it, and then execute it. It represents the basic unit of operation for the CPU and determines the overall speed and efficiency of the processor.Rate this question:
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- 2.
How was the generation of computer classified?
- A.
By the device used in memory & processor
- B.
By the accuracy of computer
- C.
By the model of the computer
- D.
By the speed of computer
Correct Answer
A. By the device used in memory & processorExplanation
The generation of computers was classified based on the device used in memory and processor. This classification refers to the different advancements and improvements made in computer technology over time. Each generation introduced new hardware components and technologies that significantly enhanced the speed, capacity, and efficiency of computers. By categorizing computers based on the device used in memory and processor, it becomes easier to understand the evolution and progress of computer technology throughout history.Rate this question:
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- 3.
Word length of a Personal Computer is?
- A.
64 bits
- B.
32 bits
- C.
8 bits
- D.
4 bits
Correct Answer
C. 8 bitsExplanation
The word length of a personal computer refers to the number of bits that the computer can process at one time. A word in this context typically refers to the number of bits that can be stored in a single memory location or processed by the CPU. In the case of 8 bits, it means that the computer can process or store 8 bits of data at a time. This is a relatively small word length compared to modern computers, which usually have word lengths of 32 or 64 bits.Rate this question:
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- 4.
Which of the following is internal memory?
- A.
Disk
- B.
RAM
- C.
Pen Drive
- D.
Cds
Correct Answer
B. RAMExplanation
RAM stands for Random Access Memory and it is a type of internal memory. Unlike external storage devices such as disks, pen drives, and CDs, RAM is directly connected to the computer's motherboard and is used for temporary storage of data and instructions that are actively being used by the computer's processor. RAM allows for quick access and retrieval of information, which helps in improving the overall performance and speed of the computer system.Rate this question:
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- 5.
A storage area used to store data to compensate for the difference in speed at which the different units can handle data is?
- A.
Accumulator
- B.
Memory
- C.
Buffer
- D.
Address
Correct Answer
C. BufferExplanation
A buffer is a storage area used to temporarily store data to compensate for the difference in speed at which different units can handle data. It acts as a temporary holding area between two devices or processes that operate at different speeds. The buffer allows the faster unit to continue processing while the slower unit catches up, preventing data loss or disruption in the flow of data.Rate this question:
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- 6.
Which key is used for moving cursor to the next field table?
- A.
Tab
- B.
Enter
- C.
Ctrl
- D.
Alt
Correct Answer
A. TabExplanation
The Tab key is used for moving the cursor to the next field or table. When filling out a form or navigating through a document, pressing the Tab key allows the user to quickly move to the next input field or table cell without using the mouse. This helps improve efficiency and speed when working with various applications and documents.Rate this question:
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- 7.
The memory sizes in mainframe computers and advanced technology micro computer are expressed as?
- A.
Kilobytes
- B.
Bits
- C.
Bytes
- D.
Megabytes
Correct Answer
D. MegabytesExplanation
Mainframe computers and advanced technology micro computers have larger memory capacities compared to traditional micro computers. As a result, their memory sizes are expressed in larger units such as megabytes, which is equal to 1 million bytes. Kilobytes and bytes are smaller units of memory measurement, while bits are used to measure data transfer rates rather than memory size.Rate this question:
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- 8.
A memory that holds micro program is?
- A.
RAM
- B.
ROM
- C.
Core Memory
- D.
Control Memory
Correct Answer
B. ROMExplanation
ROM stands for Read-Only Memory. It is a type of memory that permanently stores data and instructions that cannot be modified or erased by normal computer operations. In the context of the given question, ROM is the memory that holds micro programs. Unlike RAM (Random Access Memory) which is volatile and loses its data when the power is turned off, ROM retains its contents even when the power is off. Therefore, ROM is the correct answer for the memory that holds micro programs.Rate this question:
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- 9.
'DOS' is a?
- A.
Analog Computer
- B.
Digital Computer
- C.
System Software
- D.
Application Software
Correct Answer
C. System SoftwareExplanation
DOS stands for Disk Operating System, which is a type of system software. System software refers to the software that manages and controls the computer hardware and provides a platform for running application software. DOS specifically manages the storage and retrieval of data on computer disks. Therefore, the correct answer is System Software.Rate this question:
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- 10.
In a PC, how much memory is available to Application Software?
- A.
1024 kb
- B.
640 kb
- C.
560 kb
- D.
760 kb
Correct Answer
B. 640 kbExplanation
In a PC, the amount of memory available to application software is typically 640 kb. This is because a portion of the memory is reserved for the operating system and other system processes, leaving the remaining 640 kb for applications to use.Rate this question:
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- 11.
What does ROM stand for?
- A.
Random Operation Memory
- B.
Rarely Operated Memory
- C.
Read on Management
- D.
Read Only Memory
Correct Answer
D. Read Only MemoryExplanation
ROM stands for Read Only Memory. ROM is a type of computer memory that stores data permanently and cannot be modified or erased by normal computer operations. It contains instructions that are permanently written during manufacturing and retains its data even when the power is turned off. This type of memory is commonly used for storing firmware, operating systems, and other essential software that needs to be accessed quickly during the computer's startup process.Rate this question:
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- 12.
What is not a function of an Operating System?
- A.
Memory Management
- B.
Copy & Paste
- C.
Multitasking
- D.
Video Display
Correct Answer
B. Copy & PasteExplanation
Copy & Paste is not a function of an Operating System. While the operating system provides various functions such as memory management, multitasking, and video display, Copy & Paste is a feature commonly found in applications and software, rather than being an inherent function of the operating system itself. Copy & Paste allows users to duplicate and transfer data within and between applications, but it is not directly managed or controlled by the operating system.Rate this question:
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- 13.
What is the first stage in Software Development?
- A.
Maintenance
- B.
Testing
- C.
Specification & Design
- D.
System Analysis
Correct Answer
D. System AnalysisExplanation
System Analysis is the first stage in Software Development. During this stage, the requirements of the software system are gathered and analyzed. This involves understanding the problem, identifying the goals and constraints, and determining the scope of the software project. System Analysis helps in defining the overall structure and functionality of the software system before proceeding to the next stages like Specification & Design, Testing, and Maintenance.Rate this question:
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- 14.
Before a disk drive can access any sector record, a computer program has to provide the record’s disk address. What information does this address specify?
- A.
Track Number
- B.
Sector Number
- C.
Surface
- D.
All of above
Correct Answer
D. All of aboveExplanation
The address specified by the disk address includes the track number, sector number, and surface. The track number identifies the circular path on the disk where the sector is located. The sector number specifies the specific sector within the track. The surface indicates the particular surface of the disk where the sector is located, especially in cases where there are multiple platters or surfaces in the disk drive. Therefore, all of the above options are included in the disk address.Rate this question:
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- 15.
FORTAN programming language is more suitable for?
- A.
Business Application
- B.
Scientific Application
- C.
Marketing Application
- D.
All of above
Correct Answer
B. Scientific ApplicationExplanation
Fortran programming language is more suitable for scientific applications because it was specifically designed for numerical and scientific computing. It has built-in support for complex mathematical operations, array processing, and efficient handling of large datasets. Fortran also provides extensive libraries and tools for scientific calculations, making it a preferred choice for scientific researchers and engineers working in fields such as physics, chemistry, and engineering. Additionally, Fortran's performance and efficiency make it well-suited for computationally intensive applications that require high-speed calculations.Rate this question:
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- 16.
The arranging of data in a logical sequence is called?
- A.
Summarizing
- B.
Reproducing
- C.
Sorting
- D.
Classifying
Correct Answer
C. SortingExplanation
Sorting is the correct answer because it refers to the process of arranging data in a logical sequence. This involves organizing the data in a specific order, such as ascending or descending, based on certain criteria or attributes. By sorting the data, it becomes easier to analyze and interpret the information, making it more accessible and meaningful.Rate this question:
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- 17.
When the LAN is arranged in such a way that each Computer is connected directly to the HUB the configuration can be termed as ___________ network?
- A.
Star
- B.
Bus
- C.
Ring
- D.
All of above
Correct Answer
A. StarExplanation
When each computer in a LAN is connected directly to a central hub, the configuration is known as a star network. In a star network, all communication between computers is routed through the hub, which acts as a central point of connection. This configuration allows for easy management and troubleshooting, as well as efficient data transmission.Rate this question:
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- 18.
The Personal Computer industry was started by __________?
- A.
Apple
- B.
IBM
- C.
Compaq
- D.
HCL
Correct Answer
B. IBMExplanation
IBM is considered to be the company that started the Personal Computer industry. In 1981, IBM introduced the IBM PC, which was the first mass-produced computer designed for personal use. This computer set the standard for the industry, with its open architecture and compatibility with third-party software and hardware. The IBM PC's success led to the widespread adoption of personal computers, revolutionizing the way people work, communicate, and access information.Rate this question:
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- 19.
Analog Computers works on the supply of ___________?
- A.
Electric Pulse but not Continuous
- B.
Magnetic Strength
- C.
Continuous Electric Pulse
- D.
All of above
Correct Answer
C. Continuous Electric PulseExplanation
Analog computers work on the supply of continuous electric pulses. Unlike digital computers that use discrete values, analog computers process continuous signals to perform calculations and solve mathematical equations. The continuous electric pulses in analog computers allow for precise and real-time calculations, making them suitable for applications that require continuous and smooth data processing.Rate this question:
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- 20.
What is Compiler?
- A.
A compiler does a conversation line by line as the program is run
- B.
A compiler converts whole of a high level program code into machine code in one step
- C.
A compiler is a general purpose language providing very efficient execution
- D.
All of above
Correct Answer
B. A compiler converts whole of a high level program code into machine code in one stepExplanation
A compiler is a software tool that translates high-level programming code into machine code that can be executed by a computer. Unlike an interpreter, which translates and executes the code line by line, a compiler converts the entire program into machine code in one step. This allows for more efficient execution as the compiled code can be directly executed by the computer's processor. Therefore, the correct answer is "A compiler converts the whole of a high-level program code into machine code in one step."Rate this question:
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- 21.
How many bytes in a Megabyte?
- A.
1 GBs
- B.
1024 Kbs
- C.
1024 Bytes
- D.
1000 Kbs
Correct Answer
B. 1024 KbsExplanation
The correct answer is 1024 Kbs. A Megabyte (MB) is equal to 1024 Kilobytes (Kb). This is because in the binary system, each unit is a power of 2, so 1 Megabyte is equal to 1024 Kilobytes, not 1000 Kilobytes.Rate this question:
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- 22.
The Operating System may perform ____________ operation to manage the memory while running a large program?
- A.
Paging
- B.
Scheduling
- C.
Sorting
- D.
All of above
Correct Answer
A. PagingExplanation
The operating system may perform paging operation to manage the memory while running a large program. Paging is a memory management technique that allows the operating system to divide the physical memory into fixed-size blocks called pages. These pages are then used to store different parts of a program or data. By using paging, the operating system can efficiently allocate and manage memory resources, improving overall system performance and allowing large programs to run smoothly.Rate this question:
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- 23.
To keep track of different editions of a documents which feature we will use?
- A.
Editions
- B.
Tracks
- C.
Traces
- D.
Versions
- E.
None of above
Correct Answer
D. VersionsExplanation
To keep track of different editions of a document, we will use versions. Versions allow us to maintain a record of changes made to a document over time. Each new edition or update is assigned a unique version number or name, making it easier to identify and reference different iterations of the document. By using versions, we can track the evolution of the document and ensure that the most recent and accurate version is being used.Rate this question:
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- 24.
Which of the following is not a type of page margin?
- A.
Top
- B.
Center
- C.
Right
- D.
Left
Correct Answer
B. CenterExplanation
The correct answer is "Center" because it is not a type of page margin. In page layout, margins are the blank spaces around the content on a page. The options "Top," "Right," and "Left" are all valid types of page margins, as they refer to the respective edges of the page where the content is not present. However, "Center" is not a type of margin as it does not define a specific edge or space around the content.Rate this question:
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- 25.
What is the maximum font size you can apply for any character?
- A.
16038
- B.
1638
- C.
163
- D.
72
Correct Answer
B. 1638Explanation
The maximum font size that can be applied for any character is 1638. This means that you can increase the size of a character up to 1638 units.Rate this question:
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- 26.
Ctrl + N is the shortcut for ___________?
- A.
Close Document
- B.
Open Document
- C.
Save Document
- D.
New Document
- E.
None of above
Correct Answer
D. New DocumentExplanation
Ctrl + N is the shortcut for creating a new document. When this shortcut is pressed, it opens a blank document in the current application, allowing the user to start working on a new file. This shortcut is commonly used in various software applications, including word processors, graphic design programs, and code editors. It is a convenient way to quickly create a new file without having to navigate through menus or use the mouse.Rate this question:
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- 27.
What is the shortcut key you can press to create copyright symbol?
- A.
Alt+Ctrl+C
- B.
Alt+C
- C.
Shift+Ctrl+C
- D.
Ctrl+C
- E.
None of above
Correct Answer
A. Alt+Ctrl+CExplanation
Pressing Alt+Ctrl+C is the shortcut key to create the copyright symbol.Rate this question:
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- 28.
"Ctrl + End” is used to _____________?
- A.
Moves the cursor to the end of paragraph
- B.
Moves the cursor to the end of line
- C.
Moves the cursor to the end of document
- D.
None of above
Correct Answer
C. Moves the cursor to the end of documentExplanation
"Ctrl + End" is a keyboard shortcut that is used to move the cursor to the end of a document. This is useful when working with long documents or when you want to quickly navigate to the end of a file without scrolling. It saves time and allows for efficient navigation within a document.Rate this question:
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- 29.
“Ctrl + PageUp” is used to ___________?
- A.
Moves the cursor one page up
- B.
Moves the cursor one paragraph up
- C.
Moves the cursor one screen up
- D.
Moves the cursor one line up
- E.
None of above
Correct Answer
A. Moves the cursor one page upExplanation
The key combination "Ctrl + PageUp" is used to move the cursor one page up. This allows the user to navigate through a document or webpage quickly, especially when working with long documents or scrolling through multiple pages of content.Rate this question:
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- 30.
Shortcut to close a document is ___________?
- A.
Alt + F4
- B.
Ctrl + F4
- C.
Ctrl + Q
- D.
Ctrl + W
- E.
None of above
Correct Answer
D. Ctrl + WExplanation
Pressing Ctrl + W is a shortcut to close a document. This key combination is commonly used in various applications to quickly close the active window or document. It is a convenient and efficient way to close a document without having to navigate through menus or use the mouse.Rate this question:
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