100+ Computer Awareness MCQ Questions and Answers
Here is 100+ Computer Fundamental Q&A in multiple choice format. These questions are very important for any competitive examination link UPSC, SSC CGL, CHSL, RRB NTPC, RRB Group D etc.
Question : Which is not a RAM Type?
[A] DRAM
[B] SRAM
[C] SDRAM
[D] EPRAM
[spoiler title=’Check Answer’]Correct Answer : [D] EPRAM
[/spoiler]
Question : RAM is always located on the motherboarIf you manually want to install the RAM then, the first step is –
[A] Do not install it yourself.
[B] Unplug the cables
[C] Shutdown the Computer
[D] Both &
[spoiler title=’Check Answer’]Correct Answer : [D] Both &
[/spoiler]
Question : When you change the color and background of a chart in a spreadsheet, you are:
[A] Formatting
[B] Merging
[C] Painting
[D] Calculating
[spoiler title=’Check Answer’]Correct Answer : [A] Formatting
[/spoiler]
Question : What is the name of the informational video series released in the Health Ministry’s social media platforms?
[A] COVID Warrior
[B] COVID GuruKool
[C] COVID DRONA
[D] COVID ASTRA
[spoiler title=’Check Answer’]Correct Answer : [B] COVID GuruKool
[/spoiler]
Question : E-governance is:
[A] Improving the way the government functions
[B] Making employees aware of the basics of computing
[C] Delivering public services by means of internet
[D] Framing of laws by the government for online interactions
[spoiler title=’Check Answer’]Correct Answer : [C] Delivering public services by means of internet
[/spoiler]
Question : Mapmakers are GPS to?
[A] Store Geographical Information
[B] Use Geographical Information
[C] View Geographical Information
[D] Store, Use & View Geographical Information
[spoiler title=’Check Answer’]Correct Answer : [D] Store, Use & View Geographical Information
[/spoiler]
Question : From what has the term ‘Wi-Max’ been derived?
[A] Worldwide Interoperability for Microwave Access
[B] World Interconnection for Microwave Access
[C] Worldwide Interchangeability for Microwave Access
[D] Worldwide Interconnection for Multiple Access
[spoiler title=’Check Answer’]Correct Answer : [A] Worldwide Interoperability for Microwave Access
[/spoiler]
Question : Superscript, subscript, outline, emboss, engrave all these are collectively known as?
[A] Font Styles
[B] Font Effects
[C] Word Art
[D] Text Effect
[spoiler title=’Check Answer’]Correct Answer : [B] Font Effects
[/spoiler]
Question : A system bus:
[A] runs at 100 MHz
[B] Transports data between the CPU and memory.
[C] Uses a set of serial electrical paths.
[D] Is always the same size.
[spoiler title=’Check Answer’]Correct Answer : [B] Transports data between the CPU and memory.
[/spoiler]
Question : How you can manually break up the line breakup in MS-Word?
[A] Space + Enter
[B] Ctrl + Enter
[C] Alt + Enter
[D] Shift + Enter
[spoiler title=’Check Answer’]Correct Answer : [D] Shift + Enter
[/spoiler]
Question : To split a table in MS-Word, which shortcut key is used?
[A] Alt + Shit + Ctrl
[B] Alt + Shift + Del
[C] Ctrl + Shift + Enter
[D] Alt + Ctrl + Enter
[spoiler title=’Check Answer’]Correct Answer : [C] Ctrl + Shift + Enter
[/spoiler]
Question : What is the Portrait & Landscape are called in MS-Word?
[A] Page Size
[B] Paper Layout
[C] Page Orientation
[D] All of these
[spoiler title=’Check Answer’]Correct Answer : [C] Page Orientation
[/spoiler]
Question : The shortcuts keys, Ctrl+ Shift + plus sign are used for character formatting of the following:
[A] Underline Words, Not Spaces
[B] Superscript
[C] Case of Letters
[D] All Capitals Letters
[spoiler title=’Check Answer’]Correct Answer : [B] Superscript
[/spoiler]
Question : Bar code symbols are ready by the bar-code reader by using:
[A] Photoelectric Scanner
[B] Printer
[C] Keyboard
[D] Mouse
[spoiler title=’Check Answer’]Correct Answer : [A] Photoelectric Scanner
[/spoiler]
Question : Which is not a type of operating system?
[A] Real Value Operating System
[B] Distributes Operating System
[C] Network Operating System
[D] Time-Sharing Operating System
[spoiler title=’Check Answer’]Correct Answer : [A] Real Value Operating System
[/spoiler]
Question : Which is not a Network device?
[A] Switch
[B] Hub
[C] Star
[D] Router
[spoiler title=’Check Answer’]Correct Answer : [C] Star
[/spoiler]
Question : Which network security feature prevents users on a network from using program and information that is unauthorized?
[A] Firewall
[B] Antivirus
[C] Jammer
[D] Security Plus
[spoiler title=’Check Answer’]Correct Answer : [A] Firewall
[/spoiler]
Question : In MS-Word, you can detect spelling and grammar errors by pressing the key(s):
[A] Shift + F7
[B] Ctrl + F7
[C] Alt + F7
[D] F7
[spoiler title=’Check Answer’]Correct Answer : [D] F7
[/spoiler]
Question : Unsolicited commercial email is commonly known as?
[A] Spam
[B] Ce-Mail
[C] Hoaxes
[D] Hypertext
[spoiler title=’Check Answer’]Correct Answer : [A] Spam
[/spoiler]
Question : Which of the following are sequentially arranged steps for installing a software?
[A] Download, Run, Install
[B] Run, Download, Install
[C] Run, Install, Download
[D] Download, Install, Run
[spoiler title=’Check Answer’]Correct Answer : [D] Download, Install, Run
[/spoiler]
Question : Which of the following is not a Disk Operating System (DOS) Command?
[A] del
[B] dir
[C] how
[D] format
[spoiler title=’Check Answer’]Correct Answer : [C] how
[/spoiler]
Question : What type of component may come in a dual-core version?
[A] RAM
[B] SSD
[C] PCI Card
[D] CPU
[spoiler title=’Check Answer’]Correct Answer : [D] CPU
[/spoiler]
Question : DoS is an acronym for:
[A] Data Operating System
[B] Disk Operating System
[C] Date Operating Section
[D] Disc Operating Station
[spoiler title=’Check Answer’]Correct Answer : [B] Disk Operating System
[/spoiler]
Question : One ZB is made up of _______ :
[A] 1024 PB
[B] 1024 EB
[C] 1024 BB
[D] 1024 YB
[spoiler title=’Check Answer’]Correct Answer : [B] 1024 EB
[/spoiler]
Question : Which is non-volatile memory?
[A] Data is saved regardless of power Off
[B] Lose data when power is Off
[C] Not related to any kind of computer memory
[D] Same as Cache Memory
[spoiler title=’Check Answer’]Correct Answer : [A] Data is saved regardless of power Off
[/spoiler]
Question : The primary memory of a computer includes:
[A] RAM only
[B] CACHE only
[C] RAM and CACHE both
[D] Hard Device only
[spoiler title=’Check Answer’]Correct Answer : [A] RAM only
[/spoiler]
Question : What is the full form of GUI in terms of computers?
[A] Graphical user Instrument
[B] Graphical unified interface
[C] Graphical unified instrument
[D] Graphical user interface
[spoiler title=’Check Answer’]Correct Answer : [D] Graphical user interface
[/spoiler]
Question : In which of the following form, data is stored in the computer?
[A] Decimal
[B] Binary
[C] Hexa-Decimal
[D] Octal
[spoiler title=’Check Answer’]Correct Answer : [B] Binary
[/spoiler]
Question : In MS-Excel, which of the following formula is not entered correctly?
[A] =22+825
[B] 137+549
[C] =B33+V32
[D] =B2/A15
[spoiler title=’Check Answer’]Correct Answer : [B] 137+549
[/spoiler]
Question : For each instruction of a program in the memory, the CPU goes through a:
[A] decode – fetch – execute sequence
[B] execute – store – decode sequence
[C] fetch – decode – execute sequence
[D] fetch – execute – decode sequence
[spoiler title=’Check Answer’]Correct Answer : [C] fetch – decode – execute sequence
[/spoiler]
Question : Which of the following is the fastest memory?
[A] Secondary Memory
[B] Auxiliary Memory
[C] Cache Memory
[D] Virtual Memory
[spoiler title=’Check Answer’]Correct Answer : [C] Cache Memory
[/spoiler]
Question : Which is the correct arrangement of memories types from highest to lowest speed from flowing options?
[A] secondary storage, main memory, cache, registers
[B] registers, cache, secondary storage, main memory
[C] registers, cache, main memory, secondary storage
[D] cache, registers, main memory, secondary storage
[spoiler title=’Check Answer’]Correct Answer : [C] registers, cache, main memory, secondary storage
[/spoiler]
Question : In Microsoft PowerPoint, the best way to insert a new slide in a presentation is to use ___________
[A] Normal View
[B] Special View
[C] Slide Show View
[D] Slide Sorter View
[spoiler title=’Check Answer’]Correct Answer : [D] Slide Sorter View
[/spoiler]
Question : In Microsoft Excel, which one of the following tools allows extracting the significance from a large detailed data set?
[A] Data Extractor
[B] Data Verifier and Validator
[C] Pivot Table
[D] Vertical Hash Lookup
[spoiler title=’Check Answer’]Correct Answer : [C] Pivot Table
[/spoiler]
Question : In a computer with Windows operating systems, files are stored in locations called –
[A] Storages
[B] Programs
[C] Directories
[D] Stack
[spoiler title=’Check Answer’]Correct Answer : [C] Directories
[/spoiler]
Question : In the email address [email protected], the “@” stands for:
[A] At
[B] At the rate
[C] At rate
[D] All are correct
[spoiler title=’Check Answer’]Correct Answer : [B] At the rate
[/spoiler]
Question : In the Internet business, ISP stands for:
[A] Internet System Protocol
[B] Internet Service Provider
[C] Internet System Provider
[D] Internet Service Protocol
[spoiler title=’Check Answer’]Correct Answer : [B] Internet Service Provider
[/spoiler]
Question : In MS-Word, what is the smallest font size generally that we can use to text in Word?
[A] 8
[B] 7
[C] 1
[D] 4
[spoiler title=’Check Answer’]Correct Answer : [A] 8
[/spoiler]
Question : The files can be saved in which of the following device?
[A] Monitor
[B] Compact Disc
[C] Printer
[D] Speaker
[spoiler title=’Check Answer’]Correct Answer : [B] Compact Disc
[/spoiler]
Question : In MS Word, Thesaurus tool has made for the Purpose of _______
[A] Spell Checking
[B] Synonyms and Antonyms words
[C] Spelling Suggestions
[D] Grammar Correction
[spoiler title=’Check Answer’]Correct Answer : [B] Synonyms and Antonyms words
[/spoiler]
Question : 41. The virus attacks on the computer can be stopped or prevented with the help of which one of the following?
[A] Security Wall
[B] Virus eliminator software
[C] Antivirus Software
[D] Firewall
[spoiler title=’Check Answer’]Correct Answer : [C] Antivirus Software
[/spoiler]
Question : Network Interface Card is a(n)________ device:
[A] Input
[B] Output
[C] Input/Output
[D] Storage
[spoiler title=’Check Answer’]Correct Answer : [C] Input/Output
[/spoiler]
Question : The most popular technique used to automate sending of a customized letter to different recipients where most of the content is the same except the customer address of MS Word?
[A] Send mail to all
[B] Mail Merge
[C] Design, review and send
[D] Bulk customized mail
[spoiler title=’Check Answer’]Correct Answer : [B] Mail Merge
[/spoiler]
Question : Dot Matrix Printer is an example of:
[A] Input Device
[B] Output Device
[C] Processing Unit
[D] Integral Device
[spoiler title=’Check Answer’]Correct Answer : [B] Output Device
[/spoiler]
Question : Which of the following technique is popular in academic testing?
[A] OMR
[B] OLE
[C] OCR
[D] MICR
[spoiler title=’Check Answer’]Correct Answer : [A] OMR
[/spoiler]
Question : One Mega Byte (Mis equal to which of the following:
[A] 1 trillion bytes
[B] 1048 bytes
[C] 1024 KB
[D] 256 KB
[spoiler title=’Check Answer’]Correct Answer : [C] 1024 KB
[/spoiler]
Question : Speed of CPU is measured in
[A] MHz
[B] GHz
[C] Hz
[D] All of these
[spoiler title=’Check Answer’]Correct Answer : [B] GHz
[/spoiler]
Question : Which of the following is an advantage of the view in databases?
[A] Data Security
[B] Hiding of Complex Queries
[C] Derived Columns
[D] All of the Above
[spoiler title=’Check Answer’]Correct Answer : [D] All of the Above
[/spoiler]
Question : The term HTTP stands for Hypertext Transfer Protocol. Who has developed this protocol to transfer information over the internet?
[A] Tim Berners Lee
[B] Bill Gates
[C] Sundar Pichai
[D] Sandeep Singh
[spoiler title=’Check Answer’]Correct Answer : [A] Tim Berners Lee
[/spoiler]
Question : Which of the following is the extension of A Microsoft Word file?
[A] .document
[B] .txt
[C] .doc
[D] .file
[spoiler title=’Check Answer’]Correct Answer : [C] .doc
[/spoiler]
Question : Which code is used in Cheque?
[A] OMR
[B] Scanner
[C] Plotter
[D] MICR
[spoiler title=’Check Answer’]Correct Answer : [D] MICR
[/spoiler]
Question : To run thesaurus which key will be pressed?
[A] Shift + F12
[B] Shift + F7
[C] Shift + F10
[D] Shift + F11
[spoiler title=’Check Answer’]Correct Answer : [B] Shift + F7
[/spoiler]
Question : Which type of security is provided by ‘https’?
[A] TCP
[B] TLS
[C] SSL
[D] B & C
[spoiler title=’Check Answer’]Correct Answer : [D] B & C
[/spoiler]
Question : The key used to restart a computer is:
[A] Del + Ctrl
[B] Backspace + Ctrl
[C] Ctrl + Alt + Del
[D] Reset
[spoiler title=’Check Answer’]Correct Answer : [C] Ctrl + Alt + Del
[/spoiler]
Question : To host a web site which of the following is required?
[A] Web Server
[B] Exchange Server
[C] Mail Server
[D] Database Server
[spoiler title=’Check Answer’]Correct Answer : [A] Web Server
[/spoiler]
Question : Which file Format can be added to a PowerPoint show?
[A] .jpg
[B] .gif
[C] .wav
[D] All of the above
[spoiler title=’Check Answer’]Correct Answer : [D] All of the above
[/spoiler]
Question : Adobe developed______, which allows the document to be transmitted and stored without loss of formatting.
[A] Defragmentation
[B] Assembler Document Format
[C] Filtering Format
[D] Portable Document Format
[spoiler title=’Check Answer’]Correct Answer : [D] Portable Document Format
[/spoiler]
Question : In MS Word, you can move and copy text:
[A] Within a word document
[B] Between word document
[C] Between office application
[D] All of the above
[spoiler title=’Check Answer’]Correct Answer : [D] All of the above
[/spoiler]
Question : Which is of the following is the fastest memory?
[A] Secondary Memory
[B] Auxiliary Memory
[C] Cache Memory
[D] Virtual Memory
[spoiler title=’Check Answer’]Correct Answer : [C] Cache Memory
[/spoiler]
Question : Bandwidth refers to:
[A] The amount of data that can be transmitted through a communication channel.
[B] Protocol limitations
[C] The speed of the communication device
[D] A transmission medium
[spoiler title=’Check Answer’]Correct Answer : [A] The amount of data that can be transmitted through a communication channel.
[/spoiler]
Question : Which of the following is not an option of edit menu
[A] Cut
[B] copy
[C] Paste
[D] Page setup
[spoiler title=’Check Answer’]Correct Answer : [D] Page setup
[/spoiler]
Question : The secondary storage device is needed to –
[A] Perform arithmetic and logical operations
[B] Communicate on a network
[C] Print output result
[D] Store large volumes of data that exceed the capacity of the main memory.
[spoiler title=’Check Answer’]Correct Answer : [D] Store large volumes of data that exceed the capacity of the main memory.
[/spoiler]
Question : What is the language used by most of the DBMSs for helping their users to access data
[A] Assembly level language
[B] C++
[C] Query Language
[D] 1GL
[spoiler title=’Check Answer’]Correct Answer : [C] Query Language
[/spoiler]
Question : Which command is used for inserting records in database?
[A] INSERT
[B] ADD
[C] Both ‘a’ and ‘b’
[D] None of these
[spoiler title=’Check Answer’]Correct Answer : [A] INSERT
[/spoiler]
Question : If you need to duplicate the entire disk , which command will you use
[A] Copy
[B] Diskcopy
[C] Chkdsk
[D] Format
[spoiler title=’Check Answer’]Correct Answer : [B] Diskcopy
[/spoiler]
Question : Computer Virus is
[A] A hardware
[B] Windows tool
[C] A computer program
[D] None of these
[spoiler title=’Check Answer’]Correct Answer : [C] A computer program
[/spoiler]
Question : ________ Systems use a light beam to scan input data and convert it into electrical signals, which are sent to the computer for processing.
[A] Image recognition
[B] Optical recognition
[C] PDF
[D] Application
[spoiler title=’Check Answer’]Correct Answer : [B] Optical recognition
[/spoiler]
Question : Which virus spread in application software
[A] Macro Virus
[B] boot virus
[C] file virus
[D] Anti-virus
[spoiler title=’Check Answer’]Correct Answer : [A] Macro Virus
[/spoiler]
Question : An anti virus is a
[A] Program code
[B] Computer
[C] Company name
[D] Application
[spoiler title=’Check Answer’]Correct Answer : [A] Program code
[/spoiler]
Question : First boot sector virus is
[A] Computed
[B] mind
[C] brain
[D] Cloner
[spoiler title=’Check Answer’]Correct Answer : [C] brain
[/spoiler]
Question : Error in a program is called
[A] bug
[B] debug
[C] virus
[D] Noise
[spoiler title=’Check Answer’]Correct Answer : [A] bug
[/spoiler]
Question : Error which occurs when user tried to use a device which is not switched ON is classified as
[A] user-defined message
[B] half message
[C] execution error message
[D] built in message
[spoiler title=’Check Answer’]Correct Answer : [C] execution error message
[/spoiler]
Question : Data representation in a computer uses the number system
[A] Decimal
[B] Number
[C] Binary
[D] Integers
[spoiler title=’Check Answer’]Correct Answer : [A] Decimal
[/spoiler]
Question : The basic architecture of computer was developed by
[A] John Von Neumann
[B] Charles Babbage
[C] Blaise Pascal
[D] Robert Noyce
[spoiler title=’Check Answer’]Correct Answer : [A] John Von Neumann
[/spoiler]
Question : The binary equivalent of decimal number 99 is
[A] 1110001
[B] 1110100
[C] 1100011
[D] 1111001
[spoiler title=’Check Answer’]Correct Answer : [C] 1100011
[/spoiler]
Question : Arranging customers names in ascending order is an example of
[A] process
[B] information processing
[C] process
[D] Information
[spoiler title=’Check Answer’]Correct Answer : [B] information processing
[/spoiler]
Question : Header is
[A] Any text printed at the top of every page
[B] Any graphics printed at the top of every page
[C] Any text or graphics printed at the top of particular page
[D] Any text or graphics printed at the top of every page
[spoiler title=’Check Answer’]Correct Answer : [D] Any text or graphics printed at the top of every page
[/spoiler]
Question : This case converts first character of first word of selected sentence to capital
[A] sentence
[B] upper
[C] toggle
[D] Title
[spoiler title=’Check Answer’]Correct Answer : [A] sentence
[/spoiler]
Question : Sometimes sudden power failure lead to the loss of data if a desktop computer is directly connected to the power plug. Which device should be attached to the computer for saving this kind of data loss?
[A] Printer
[B] Hard Disk
[C] UPS
[D] Nuclear Power Plant
[spoiler title=’Check Answer’]Correct Answer : [C] UPS
[/spoiler]
Question : Which of the following will you option for saving the file
[A] Save button standard toolbar
[B] Save button from file menu
[C] By pressing Ctrl + S
[D] All of these
[spoiler title=’Check Answer’]Correct Answer : [D] All of these
[/spoiler]
Question : By default the top margin in the word document is
[A] 1 inch
[B] 2 inch
[C] 3 inch
[D] 1½ inch
[spoiler title=’Check Answer’]Correct Answer : [A] 1 inch
[/spoiler]
Question : By default the right margin in the word document is
[A] 1 inch
[B] 2 inch
[C] 3 inch
[D] 1 ¼ inch
[spoiler title=’Check Answer’]Correct Answer : [D] 1 ¼ inch
[/spoiler]
Question : The Field names are enclosed within
[A] <<>>
[B] >><<
[C] >>>>
[D] <<<<
[spoiler title=’Check Answer’]Correct Answer : [A] <<>>
[/spoiler]
Question : You can use the following objects created in MS-word in a web page
[A] Auto-shapes
[B] Bullets
[C] tables and charts
[D] All of these
[spoiler title=’Check Answer’]Correct Answer : [D] All of these
[/spoiler]
Question : You can merge the main document with data source in Excel. In mail merge operation, Word is usually
[A] server
[B] source
[C] client
[D] none of above
[spoiler title=’Check Answer’]Correct Answer : [C] client
[/spoiler]
Question : Blinking point which shows your position in the text is called
[A] Cursor
[B] position
[C] Blinker
[D] None of these
[spoiler title=’Check Answer’]Correct Answer : [A] Cursor
[/spoiler]
Question : You can use the formula palette to
[A] Format cells containing numbers
[B] create and edit formula containing functions
[C] enter assumptions data
[D] copy a range of cells
[spoiler title=’Check Answer’]Correct Answer : [B] create and edit formula containing functions
[/spoiler]
Question : The Name box on to the left of formula bar
[A] shows the name of workbook currently working on
[B] shows the name of worksheet currently working on
[C] shows the name of cell address or range currently working on
[D] None of above
[spoiler title=’Check Answer’]Correct Answer : [C] shows the name of cell address or range currently working on
[/spoiler]
Question : Which of the following is not the correct method of editing the cell content?
[A] Press the Alt key
[B] Press the F2 key
[C] Click the formula bar
[D] Double click the cell
[spoiler title=’Check Answer’]Correct Answer : [A] Press the Alt key
[/spoiler]
Question : Which command lists the contents of current directory of a disk
[A] Copy
[B] Tree
[C] CD
[D] Dir
[spoiler title=’Check Answer’]Correct Answer : [D] Dir
[/spoiler]
Question : ______ Devices accept the spoken word through a microphone and convert it into binary code that can be understood by the computer.
[A] Speech recognition
[B] Handwriting recognition
[C] Peripheral
[D] All of the above
[spoiler title=’Check Answer’]Correct Answer : [A] Speech recognition
[/spoiler]
Question : Which of the cell pointer indicates you that you can make selection?
[A] Doctors symbol (Big Plus)
[B] small thin plus icon
[C] Mouse Pointer with anchor at the tip
[D] None of above
[spoiler title=’Check Answer’]Correct Answer : [A] Doctors symbol (Big Plus)
[/spoiler]
Question : When a customer makes an online hotel booking, the data base is update in
[A] Batch mode
[B] Pseudo real- time
[C] 2 Days
[D] All of these
[spoiler title=’Check Answer’]Correct Answer : [B] Pseudo real- time
[/spoiler]
Question : DBMS is
[A] Collection of data
[B] Set of programs to access those data
[C] Set of program to update those data
[D] All of these
[spoiler title=’Check Answer’]Correct Answer : [D] All of these
[/spoiler]
Question : It is a collection of logically related information
[A] Folder
[B] Information
[C] Processing
[D] File
[spoiler title=’Check Answer’]Correct Answer : [D] File
[/spoiler]
Question : COUNT command is used to
[A] Count the number of data fields in an active database file
[B] Count the number of data files which are active
[C] Count the records which are update
[D] Count the number of records in an active data base files
[spoiler title=’Check Answer’]Correct Answer : [D] Count the number of records in an active data base files
[/spoiler]
Question : The computer holds data and:
[A] Bytes
[B] Programs
[C] Registers
[D] Bits
[spoiler title=’Check Answer’]Correct Answer : [B] Programs
[/spoiler]
Question : Special set of characters that computer associates with specific user identification is classified as
[A] password
[B] identity code
[C] inquiry code
[D] dump code
[spoiler title=’Check Answer’]Correct Answer : [A] password
[/spoiler]
Question : Creating a data files means
[A] Designing base and defining the structure of the database
[B] Getting the information about database
[C] Selecting data from database
[D] Deleting data from database
[spoiler title=’Check Answer’]Correct Answer : [A] Designing base and defining the structure of the database
[/spoiler]
Question : Function of running and loading programs by use of peripherals is function of
[A] operating system
[B] inquiry system
[C] dump programs
[D] function system
[spoiler title=’Check Answer’]Correct Answer : [A] operating system
[/spoiler]