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Q1Computer · Operating SystemRRB NTPC (Undergraduate)
Which statement is True or False about the Windows 11 Operating System (OS)?(i) The OS loads program code directly onto the hard disk for execution, as the CPU can only execute code from permanent storage.(ii) For multitasking, the OS allocates small CPU time slices to processes, rapidly switching between them, a technique known as Time-Sharing.
विंडोज 11 ऑपरेटिंग सिस्टम (OS) के संबंध में कौन-सा कथन सत्य या असत्य है?(i) OS एग्जीक्यूशन के लिए प्रोग्राम कोड को सीधे हार्ड डिस्क पर लोड करता है, क्योंकि CPU केवल स्थायी भंडारण से ही कोड एग्जीक्यूट कर सकता है।(ii) मल्टीटास्किंग के लिए, OS प्रासेसेज को छोटे CPU टाइम स्लाइस (time slice) आवंटित करता है, और उनके बीच तेजी से स्विच करता है, यह एक तकनीक है जिसे टाइम-शेयरिंग (Time-Sharing) के नाम से जाना जाता है।
Answer: A) (i) False, (ii) True(i) असत्य, (ii) सत्य
Statement (i): OS loads program code directly onto hard disk for execution
FALSE → CPU executes code from RAM (primary memory) , not hard disk.
Hard disk is secondary storage; too slow for direct execution.
OS loads programs from disk to RAM, then CPU executes from RAM.
Statement (ii): OS allocates small CPU time slices for multitasking
TRUE → This is Time-Sharing/Time-Slicing technique.
OS rapidly switches between processes (context switching).
Each process gets small time quantum (e.g., 10-100ms).
Creates illusion of simultaneous execution.
Answer: Option 1 → (i) False, (ii) Trueकथन (i): OS प्रोग्राम कोड को हार्ड डिस्क पर सीधे निष्पादन के लिए लोड करता है
गलत → CPU कोड को RAM (प्राथमिक मेमोरी) से निष्पादित करता है, हार्ड डिस्क से नहीं।
हार्ड डिस्क द्वितीयक स्टोरेज है; सीधे निष्पादन के लिए बहुत धीमी।
OS प्रोग्राम को डिस्क से RAM में लोड करता है, फिर CPU RAM से निष्पादित करता है।
कथन (ii): OS मल्टीटास्किंग के लिए छोटे CPU टाइम स्लाइस आवंटित करता है
सही → यह टाइम-शेयरिंग/टाइम-स्लाइसिंग तकनीक है।
OS प्रक्रियाओं के बीच तेजी से स्विच करता है (कॉन्टेक्स्ट स्विचिंग)।
प्रत्येक प्रक्रिया को छोटा टाइम क्वांटम मिलता है (जैसे 10-100ms)।
एक साथ निष्पादन का भ्रम पैदा करता है।
उत्तर: विकल्प 1 → (i) False, (ii) True -
Q2Computer · Computer Hardware (Input/Output, Buses & Ports)UPPCL Executive Assistant 2022
Which of the following printers prints characters by striking pins on an ink ribbon?
Answer: A) Dot matrix
A dot matrix printer is an impact printer that uses a matrix of pins to print characters. These pins strike against an ink ribbon to create a pattern of dots on paper, forming the characters. This mechanism directly matches the printing method described in the question. -
Q3Computer · Computer Hardware (Input/Output, Buses & Ports)UPPCL Technician Grade-II 2023
Which of the following is NOT an output unit of the computer system?
Answer: A) Microphone
A microphone is an input device that converts sound into data for the computer. It is not an output unit because it sends information to the computer rather than receiving information from it. Other options like displays and printers present output from the computer. -
Q4Computer · MemoryUPPCL Executive Assistant 2022
Which of the following options is correct in the context of increasing order of access speed?
Answer: A) Magnetic tape → Optical disk → Cache memory → Registers
In the memory hierarchy, access speed depends on the storage type. Magnetic tape is the slowest, followed by optical disk. Cache memory is very fast, and registers, located inside the CPU, provide the fastest access speed. This sequence correctly represents the increasing order of speed. -
Q5Computer · Organization of ComputerSSC CHSL Tier-I 2022
Pick the odd one out in Central Processing Unit (CPU) of a computer.
Answer: A) Output Unit
The Output Unit is the odd one out because it is not part of the Central Processing Unit (CPU).
The CPU mainly consists of the Arithmetic Logic Unit (ALU) and the Control Unit (CU), which handle processing and control tasks.
The Output Unit is a separate component responsible for displaying or sending out processed data from the CPU to external devices. -
Q6Computer · Data Communication, Networking & OSI ModelUPPCL Assistant Accountant 2022
Which of the following command is used to view the entire route through which internet traffic is transferred from your computer to the remote server in Windows system?
Answer: B) tracert
The tracert (trace route) command is used in Windows systems to view the entire path that internet traffic takes from your computer to a remote server. It displays all the 'hops' (intermediate routers) along the route, helping in diagnosing network connectivity issues and latency problems. -
Q7Computer · Organization of ComputerUPPCL Technician Grade-II 2023
CPU is also called
Answer: C) microprocessor
The CPU (Central Processing Unit) is commonly referred to as a microprocessor because modern CPUs are built on a single integrated circuit (IC) chip. A microprocessor is a programmable device that handles all arithmetic, logical, and control operations of a computer. It is considered the 'brain' of the computer and integrates components like the ALU (Arithmetic Logic Unit) and CU (Control Unit). Other options like semi-processor, miniprocessor, or multi-processor are not standard terms for CPU. -
Q8Computer · Computer Hardware (Input/Output, Buses & Ports)RRB NTPC (Undergraduate)
Which of the following pairs correctly classifies one input and one output device?
निम्नलिखित में से कौन-सा युग्म एक इनपुट और एक आउटपुट डिवाइस को सही ढंग से वर्गीकृत करता है?
Answer: D) Microphone – Input device, Monitor – Output deviceमाइक्रोफ़ोन – इनपुट डिवाइस, मॉनिटर – आउटपुट डिवाइस
Answer: Microphone – Input device, Monitor – Output device -
Q9Computer · MemoryUPSSSC Computer Operator 2020
Alia has 2600 MB of data. Dinesh has 4000 MB of data. The combined data of both can be stored in a USB flash drive with a storage capacity of ___.
Answer: D) 10 GB
The total data of Alia and Dinesh is 2600 MB + 4000 MB = 6600 MB. Since 1 GB equals 1024 MB, 6600 MB is approximately 6.45 GB. To store 6.45 GB of data, the next available and sufficient storage option is a 10 GB USB flash drive, as a 6 GB drive would be too small for this data. -
Q10Computer · Data Communication, Networking & OSI ModelUPPCL Assistant Private Secretary (APS) 2018
For a 10 base 5 network type, ___ cabling is preferred.
Answer: C) RG-11
10Base5 network, also known as Thicknet, uses thick coaxial cabling. RG-11 is the standard cable type for this specification, supporting segments up to 500 meters, whereas RG-58 is used for thinner coaxial (Thinnet) cabling in 10Base2 networks. -
Q11Computer · Internet & E-MailSSC Delhi Police Head Constable (AWO/TPO) 2025
Which of these is a sensible search query for finding basic information about video conferencing advantages?
Answer: A) "advantages of video conferencing"
The correct answer is (a) "advantages of video conferencing".
A sensible search query should clearly describe the topic and include relevant keywords. The phrase "advantages of video conferencing" directly states what information is being searched for. The other options such as "abcd1234", "!!!!???", and "enter data here" are meaningless and would not help in finding useful information. -
Q12Computer · MS-Office (Word, Excel, PowerPoint)UPPCL Executive Assistant 2022
In MS-Excel 365, which function key is used to immediately change a cell reference in a formula to absolute?
Answer: A) F4
In MS-Excel, pressing the F4 key while the cursor is on a cell reference in the formula bar cycles the reference between absolute ($A$1), mixed, and relative formats. This toggle function allows you to quickly lock specific rows or columns, making it essential when copying formulas while keeping certain cell addresses fixed. -
Q13Computer · Introduction to ComputerRRB Group D 2018
Which of the following is India’s fastest and first petaflops super computer which is inaugurated in Indian institutes of Tropical Meteorology in Pune?
Answer: C) PRATYUSH
Pratyush is India’s fastest and first multi-petaflops supercomputer specifically dedicated to weather and climate research.
It was inaugurated at the Indian Institute of Tropical Meteorology (IITM), Pune in January 2018.
The system has a peak performance of 6.8 petaflops, making it one of the fastest in India and among the top in the world for meteorology-related computations. -
Q14Computer · Operating SystemRRB JE CBT-2 2019
The processes that are residing in main memory and are ready and waiting to be executed, are kept on a list called-
Answer: A) Ready queue
In operating systems, the processes that are loaded into main memory and are ready to run (but not yet executing) are stored in the Ready Queue.
The Ready Queue contains all the processes that are waiting for CPU time.
Therefore, the correct answer is option (a) Ready queue. -
Q15Computer · Computer Codes & Boolean DataRRB NTPC (Graduate Level) CBT-1 2025
With reference to computing, what does ASCII stand for?
कंप्यूटिंग के संदर्भ में ASCII का पूर्ण रूप क्या है?
Answer: C) American Standard Code for Information InterchangeAmerican Standard Code for Information Interchange (अमेरिकन स्टैंडर्ड कोड फॉर इन्फॉर्मेशन इंटरचेंज)
Answer: American Standard Code for Information Interchange -
Q16Computer · MS-Office (Word, Excel, PowerPoint)UPPCL Assistant Accountant 2022
(i) Click on D5 cell (ii) Press shift key and click on B3 cell (iii) Release the shift key In MS-Excel worksheet, follow the given steps: What will be ultimately displayed in the Name Box?
Answer: C) D5
In MS-Excel, when you click with the shift key, a cell range gets selected. However, the Name Box always displays the active cell. Since the final action was releasing the shift key and D5 was the initial active cell, the Name Box will ultimately show D5 as the active cell reference. -
Q17Computer · Database Management SystemRRB NTPC Stage-I 2021
A collection of interrelated files and a set of programs that allow users to access and modify these files is known as:
Answer: B) Database Management System
Database Management System (DBMS) is a collection of interrelated files and programs that allow users to access and modify these files.
It serves as an interface between application programs and the physical database, abstracting data storage details.
A DBMS provides data organization, integrity, and independence, enabling efficient data management. -
Q18Computer · MS-Office (Word, Excel, PowerPoint)UPPCL Executive Assistant 2022
In MS-Excel 365 formula operators, which of the following operators raises a number to a power?
Answer: B) ^ (caret)
In MS-Excel, the ^ (caret) operator is used to raise a number to a power (exponentiation). For example, the formula `=5^2` will raise 5 to the power of 2, resulting in 25. It is the standard exponentiation operator for performing power calculations in Excel formulas. -
Q19Computer · Internet & E-MailUPPCL Technician Grade-II 2023
----- is a global communication system that links together thousands of individual networks and is also known as a network of networks.
Answer: A) Internet
The Internet is a global communication system that functions as a network of networks. It interconnects thousands of individual computer networks using standardized protocols (TCP/IP), enabling worldwide exchange of data and resources. This fundamental architecture distinguishes it from specific organizations or application-layer protocols. -
Q20Computer · Organization of ComputerAllahabad High Court ARO 2021
To measure the speed of a processor, ........... is used.
Answer: B) Clock speed
The speed of a processor is measured using clock speed, which is measured in Hertz (Hz). It represents the speed of the processor's internal clock cycle, determining how many instructions the processor can execute per second. Modern processors operate in Gigahertz (GHz), where 1 GHz = 1 billion cycles per second. Higher clock speed means faster performance, but it alone doesn't determine overall processor capability number of cores, cache memory, and architecture also play crucial roles.
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