Computer Awareness MCQs| Computer Awareness Objective (Multiple Choice), Computer Awareness GK Questions Free Pdf download: for SSC-CGL, UPPSC, UPSC, NDA, CDS and UPSC Civil Services Prelims Examinations.
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Computer Awareness MCQs| Computer Awareness GK Questions
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Computer Awareness GK Questions
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Computer Awareness Multiple Choice Questions
1.Which of the following languages are directly executable by a computer’s CPU?
[A] Machine Language
[B] High Language
[C] Assembly Language
[D] Second generation Language
Answer: A [Machine Language ]
Notes:
Machine languages are directly executable by a computer’s CPU.
2.V-RAM is used for access of the following?
[A] Video & Graphics
[B] Text & Images
[C] programs
[D] None of the above
Answer: A [Video & Graphics ]
Notes:
V-Ram is also known as video Ram. It is a dual ported variant of dynamic RAM. VRAM is basically RAM integrated in a card for using it for storing graphical textures, 3D models temporary. It is used for video access and graphics.
3.What is the name of the digital circuit that performs arithmetic and logical operations in computers?
[A] Arithmetic Logic Unit
[B] Digital comparator
[C] Multiplexer
[D] None of these
Answer: A [Arithmetic Logic Unit ]
Notes:
An arithmetic-logic unit (ALU) is the part of the circuit that performs Arithmetic nad logical operations. It is the part of a computer processor (CPU). In some processors, the ALU is divided into two units, an arithmetic unit (AU) and a logic unit (LU).
4.Which of the following is the processing unit of the computer?
[A] CPU
[B] Memory
[C] Graphic Card
[D] Mother Board
Answer: A [CPU]
Notes:
A modern computer consists of at least one processing element called the Central Processing Unit or CPU.
5.Which of the following devices incorporated a mechanical calendar computer?
[A] Astrolabe
[B] Gear-wheels
[C] Abacus
[D] Gear-train
Answer: A [Astrolabe]
Notes:
The astrolabe was invented in the Hellenistic world by Hipparchus. The astrolabe incorporated a mechanical calendar computer.
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6.Which of the following registers can hold both data and addresses?
[A] General Purpose Register
[B] Data Register
[C] Address Register
[D] Status Register
Answer: A [General Purpose Register]
Notes:
A General Purpose Register can hold both Data and Address. This means they are combined data/address registers.
7.Which of the following serve as both an input and output devices?
[A] Hard Disk Drives
[B] Floppy Disk
[C] Optical Disc Drives
[D] All of the above
Answer: D [All of the above]
Notes:
Hard Disk Drives, Floppy Disk, Optical Disc Drives serve as both input and output devices.
8.Which of the following comprise commonly used Assembly language?
[A] ARM
[B] COBOL
[C] BASIC
[D] Python
Answer: A [ARM]
Notes:
ARM is a commonly used Assembly language. Its full form is known as Advanced RISC Machine.
9.Which among of the following was the world’s first electronic stored-program computer?
[A] Colossus
[B] ENIAC
[C] Manchester Baby
[D] EDVAC
Answer: C [Manchester Baby]
Notes:
The Manchester Baby was the world’s first electronic stored-program computer built at Victoria University of Manchester by Frederic C. Wiiliams.
10.In which computer was magnetic core memory first demonstrated?
[A] Manchester baby
[B] Ferranti I
[C] IBM 650
[D] Whirlwind Computer
Answer: D [Whirlwind Computer]
Notes:
The first use of magnetic core was demonstrated in the Whirlwind Computer in 1953. Soon after that commercial production of the same began and it was seen in IBM 704 and Ferranti Mercury.
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11.Where are the instructions which are used to run a digital computer stored?
[A] Motherboard
[B] Hard Disk
[C] Memory
[D] All of the above
Answer: C [Memory]
Notes:
The digital computer works by counting, comparing and manipulating various digits and their combinations as per the instructions which are stored in the memory.
12.What is the job of the Mother Board?
[A] Sends power to all the components
[B] Holds all the circuits and components together
[C] Displays information
[D] Tells the computer what to do
Answer: B [Holds all the circuits and components together]
Notes:
A motherboard is the circuit board found in general purpose microcomputers . It holds and allows communication between many of the crucial electronic components of a system, such as the central processing unit and memory, and provides connectors for other peripherals.
13.A computer cannot boot if it does not have which of the following?
[A] Compiler
[B] Loader
[C] Operating System
[D] Assembler
Answer: C [Operating System]
Notes:
An operating system is the most important software that runs on a computer. It manages the computer’s memory and processes, as well as all of its software and hardware.
14.Which of the following devices is used for reading bar coded data ?
[A] Graphic Tablet
[B] Numeric Pad
[C] Bar Code Reader
[D] Magnetic Stripe Reader
Answer: C [Bar Code Reader]
Notes:
A bar code reader is an electronic device that can read and output printed barcodes to a computer. A barcode reader works by directing a beam of light across the bar code and measuring the amount of light that is reflected back.
15.The copies of data or program files are always stored as a safety. Which of the following is the name given to these copies?
[A] Backups
[B] Programs
[C] Extras
[D] Stores
Answer: A [Backups]
Notes:
Backup refers to the copying into an archive file of computer data so it may be used to restore the original after a data loss event. The main reason for data backup is to save important files if a system crash or hard drive failure occurs.
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16.Keyboard Layouts are available in many scripts. Which of the following are of the Latin Scripts?
[A] Devorak
[B] Colemark
[C] JCUKEN
[D] All of the Above
Answer: D [All of the Above]
Notes:
Devomark is a Latin type Keyboard. Colemak is a modern alternative to the QWERTY and Dvorak layouts, designed for efficient and ergonomic touch typing in English.
17.A software is a set of instructions or programs to execute a specific task. Which one is not a form of software?
[A] Microsoft Word
[B] Microsoft Excel
[C] Microsoft PowerPoint
[D] Monitor
Answer: D [Monitor]
Notes:
Software is a general term for the various kinds of programs used to operate computers and related devices. Monitor is a hardware component soft the computer system.
18.An assembler is a program that converts assembly language into machine code. Which of the following is not a type of assembler ?
[A] One pass
[B] Two pass
[C] Load and Go
[D] Three pass
Answer: D [Three pass]
Notes:
An assembler is a program that translates assembly language into machine language. There are many types of assemblers .Some of them are one pass assembler, two pass assemble, laod and go assembler etc.
19.Which of the following issues are related to the Software aging?
[A] Quality of Software decreases
[B] Entropy of Software increases
[C] Both a and b
[D] None of the Above
Answer: C [Both a and b]
Notes:
Software aging refers to progressive performance degradation of a software system due to exhaustion of operating system resources, fragmentation and accumulation of errors.
20.What is the name given to the program capable of running on any computer regardless of the operating system?
[A] Applet
[B] Back-end
[C] Open source software
[D] All of the Above
Answer: A [Applet]
Notes:
An applet is a program capable of running on any computer regardless of the operating system. Many applets can be downloaded from various sites on the Internet.
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21.What is the term used for computer software that is undergoing testing and has not yet been officially released?
[A] Alpha Software
[B] Beta Software
[C] Gamma Software
[D] Ready-to-use Software
Answer: B [Beta Software]
Notes:
Beta software refers to computer software that is undergoing testing and has not yet been officially released. The beta phase follows the alpha phase.
22.Who among the following is known as the father of the DBMS?
[A] Van Neumann
[B] E.F.Codd
[C] Steve Jobs
[D] Bill Gates
Answer: B [E.F.Codd]
Notes:
Dr E.F.Codd is also known to the world as the ‘Father of Database Management Systems’. He had propounded 12 rules which are in-fact 13 in number. The rules are numbered from zero to twelve. According to him, a DBMS is fully relational if it abides by all his twelve rules.
23.Which of the following are being managed by a database management systems
[A] Data
[B] Database Engine
[C] Database Schema
[D] All of the Above
Answer: D [All of the Above]
Notes:
The DBMS manages three important things: the data, the database engine and the database schema. The database schema defines the database’s logical structure.
24.What is the name given to the library of related functions that are not loaded into memory until they are called by the application program?
[A] DML
[B] DLL
[C] DCL
[D] All of the Above
Answer: B [DLL]
Notes:
Dynamic Link Library is the library of related functions that are not loaded into memory until they are called by the application program. All RDM APIs are contained in DLLs on those operating systems that support them.
25.What is the name given to the computing infrastructure close to the sources of data?
[A] Edge Computing
[B] Embedded Computing
[C] Encrypted Computing
[D] None of the Above
Answer: A [Edge Computing]
Notes:
Edge computing refers to the computing infrastructure at the edge of the network, close to the sources of data. Edge computing reduces the communications bandwidth needed between sensors and the datacenter.
26.What is the name given to the technique of connecting computers?
[A] Node
[B] Topology
[C] Architecture
[D] Ring
Answer: B [Topology]
Notes:
Computer networks can be broken down historically into topologies, which is a technique of connecting computers. The most common topology today is a collapsed ring.
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27.Which of the following factors affect the data rate?
[A] Bandwidth available
[B] Level of the signals being used
[C] Level of noise
[D] All of the above
Answer: D [All of the above]
Notes:
Data rate depends on three factors: 1. The bandwidth available 2. The level of the signal in use 3. The quality of the channel (the level of noise)
28.Which of the following uses digital signaling, which is inserted in the transmission channel as voltage pulses?
[A] Base-band
[B] Broadband
[C] Narrow band
[D] None of the above
Answer: A [Base-band]
Notes:
Base-band signaling is defined as one that uses digital signaling, which is inserted in the transmission channel as voltage pulses.
29.Which of the following hardware device is essential for a computer to connect to a wireless network?
[A] Graphics card
[B] Wireless Printer
[C] Wireless adapter
[D] None of the above
Answer: C [Wireless adapter]
Notes:
Wireless adapters are those hardware devices which are installed inside computers to enable wireless connectivity. If a computer does not have a wireless adapter, it will not be able to connect to a router in order to access the Internet.
30.What is the maximum download speed offered under LTE-Advanced standard?
[A] 10 Mbps
[B] 100 Mbps
[C] 1 Gbps
[D] 10 Gbps
Answer: C [1 Gbps]
Notes:
The maximum download speed offered under LTE-Advanced standard is 1 Gbps. The LTE advanced is the 10the version of LTE.
31.Which one of the following sends data packets to all devices on a network regardless of any MAC addresses?
[A] Host Server
[B] Switch
[C] Hub
[D] Central Server
Answer: C [Hub]
Notes:
A hub is a hardware device that relays communication data. A hub sends data packets to all devices on a network. The hub allow system administrators to monitor data passing through and to configure each port.
32.Which of the following represents Latency?
[A] propagation time +transmission time +queuing time + processing delay
[B] propagation time – transmission time +queuing time + processing delay
[C] propagation time +transmission time +queuing time – processing delay
[D] (propagation time +transmission time) – (queuing time + processing delay)
Answer: A [propagation time +transmission time +queuing time + processing delay]
Notes:
It can be said that the Latency is made of four components: propagation time, transmission time, queuing time and processing delay. Latency =propagation time +transmission time +queuing time + processing delay
33.What is the time needed by each device on a network, to hold the message before processing, called as?
[A] Propagation time
[B] Queuing time
[C] Transmission time
[D] Jitter
Answer: B [Queuing time]
Notes:
The time needed for each intermediate or end device to hold the message before it can be processed. The queuing time is not constant as it changes with the load imposed on the network.
34.What does the number ’10’ depict in 10BASE-T?
[A] 10 Kbps
[B] 10 Mbps
[C] 10 Gbps
[D] 10 Tbps
Answer: B [10 Mbps]
Notes:
Traditional Ethernet uses 10BASE-T specifications. The number ’10’ depicts 10Mbps speed, BASE stands for baseband, and T stands for Thick Ethernet.
35.What is the bandwidth limit for CAT5e cable?
[A] upto 1 Mbps
[B] upto 2 Mbps
[C] upto 10 Mbps
[D] upto 1 Gbps
Answer: D [upto 1 Gbps]
Notes:
CAT5e can support upto 1 Gbps speeds. It was made as an improvement over CAT5 cables which can support data transmission upto 100Mbps.
36.What do we call the handoff in which there is a break in the connection on the cellular network?
[A] Hard handoff
[B] Soft handoff
[C] Rigid handoff
[D] Variable handoff
Answer: A [Hard handoff]
Notes:
Hard Handoff refers to an actual break in the connection while switching from one cell or base station to another. The switch takes place so quickly that it can hardly be noticed by the user.
37.What should be the minimum antenna size for a signal with the wavelength λ ((in metre) ?
[A] λ
[B] λ/2
[C] λ/4
[D] 2λ
Answer: C [λ/4]
Notes:
An Antenna is needed for both transmission and reception. λ/4 should be the minimum antenna size (in metre) for a signal with the wavelength λ.
38.Which of the following device encodes and decodes the analog signals in a dial-up connection?
[A] Modem
[B] NIC
[C] Router
[D] None of the above
Answer: A [Modem]
Notes:
Computer information is stored digitally, whereas information transmitted over telephone lines is transmitted in the form of analog waves. A modem converts between analog and digital forms.
39.Which of the following layer of the OSI model is used by the TCP for its operation?
[A] Network layer
[B] Transport layer
[C] Data Link layer
[D] Presentation layer
Answer: B [Transport layer]
Notes:
TCP operates at the transport layer of the OSI model. TCP provides reliable transport, in that if a segment is dropped, the sender can detect that drop and retransmit that dropped segment.
40.Which was the first smartphone launched by Nokia?
[A] Nokia 6600
[B] Nokia 9000 communicator
[C] Nokia 7250
[D] Nokia Ngage
Answer: B [Nokia 9000 communicator]
Notes:
The Nokia 9000 Communicator, which was launched in 1996, was the first smartphone launched by Nokia. It is considered to be the second smartphone in the market following the HP OmniGo 700LX.
41.Which company has developed Pixel smartphone?
[A] Microsoft
[B] Google
[C] Apple
[D] Samsung
Answer: B [Google]
Notes:
Pixel is an android smartphone designed, developed and marketed by Google. It was announced by Google in 2016 and served as the first smartphones in the Google Pixel hardware line.
42.Which of the following is not a gaming app?
[A] PUBG
[B] Clash of clans
[C] Candy Crush
[D] Line
Answer: D [Line]
Notes:
Line is a free android app for instant communications on electronic devices such as smartphones, tablet computers, and personal computers.
43.Which version of Windows introduced support for native 32-bit applications?
[A] Windows 95
[B] Windows XP
[C] Windows 98
[D] Windows NT
Answer: A [Windows 95]
Notes:
Windows 95 was the first version of windows introduced support for native 32-bit applications, plug and play hardware, preemptive multitasking, long file names of up to 255 characters, and provided increased stability over its predecessors.
44.Which of these is a word processor included in MS Office?
[A] MS Word
[B] MS Powerpoint
[C] MS Excel
[D] MS Paint
Answer: A [MS Word]
Notes:
Microsoft Word is a word processor which is included in Microsoft Office. The first version of Word was released in 1983 and it was for the MS- DOS operating system.
45.What is motion path in MS PowerPoint?
[A] An animation entrance effect
[B] A tool to narrate the story
[C] Ordering of various slides
[D] None of the above
Answer: A [An animation entrance effect]
Notes:
Motion paths are animation effects that move slide objects in a sequence to tell an effective story. It is available under the Animation menu.
46.What is trigger used for in MS PowerPoint?
[A] to start the slideshow
[B] to end the slideshow
[C] initiate a sequence of animations by clicking on a specific object
[D] to start random special effects when a particular key is pressed
Answer: C [initiate a sequence of animations by clicking on a specific object]
Notes:
Triggers allow users to initiate a sequence of animations by clicking on a specific object on the slide rather than simply clicking your mouse.
47.How can we ungroup selected groups in MS PowerPoint?
[A] By pressing Ctrl + Shift + U
[B] By pressing Shift + G
[C] By pressing Shift + U
[D] By pressing Ctrl + Shift + G
Answer: D [By pressing Ctrl + Shift + G]
Notes:
To group shapes, pictures, or WordArt objects in MS PowerPoint, select the items that needs to be grouped, and press Ctrl+G. To ungroup a group, select the group, and press Ctrl+Shift+G.
48.What is the shortcut key to switch between the field names and properties panels in table design view?
[A] F3
[B] F5
[C] F8
[D] F6
Answer: D [F6]
Notes:
The F6 key is used to switch between the windows, or between design panes / properties / etc. in the Microsoft Access.
49.What does SMS stand for?
[A] Short Message service
[B] Sim Mobile Service
[C] Short Mobile Sim
[D] Safe Messaging Service
Answer: A [Short Message service]
Notes:
SMS (short message service) is a text messaging service component of most telephone, internet, and mobile-device systems.
50.Which of the following can work as access points in banking?
[A] ATMs
[B] Mobiles
[C] Computers
[D] All of above
Answer: D [All of above]
Notes:
Access points are places or capabilities that are used to initiate or receive a payment. Access points can include bank branch offices, ATMs, terminals at the POS, agent outlets, mobile phones, and computers.