What is the function of an operating system?


Options: Manages computer’s resources very efficiently B. Takes care of scheduling jobs for execution C. Manages the flow of data and instructions D. All of the above

Ans:– D ,


Description: mcqquestions

Asked in: KCC-2018   |   JOA 556-2018  |  HRTC JTO-2017

Hits Today: 14400 | Level: Moderate


******************************************************

Want to see where do you stand among other aspirants in "Computer" category?

Click Here to take quick 10 mins MCQ test to find out.




Got some suggestion about this question or to make this site better? Please leave your comments below.




More Operating System Related questions:


. Netscape navigator is a
Options: a. Browser b. Compose c. Editor d. None of these

Ans:7 – a ,7 – a


When MS-DOS formats a disk, it automatically creates the main directory on your disk, which is called the _____ directory.
Options: main,    root,    area,    border

Ans:B ,B


To hold row and column titles in place so that they do not scroll when you scroll a worksheet click the
Options: a. Unfreeze panes command on the window menu b. Freeze panes command on the window menu c. Hold titles command on the edit menu d. Split command on the window menu

Ans:#8211; b,#8211; b


Which of the following is an integrated collection of data with minimum redundancy, so that different applications can use the required data.
Options: records,    file,    DBMS,    schema

Ans:C ,C


. Which of the following registers is used to keep track of address of the memory location where the next instruction is located?

Options: A) Memory address register B) Memory data register C) Instruction register D) Program counter

Ans:D,D


A device used to bring information into a computer is
Options: ALU,    Input device,    Control unit,    Output device

Ans:B ,B


Which of the following commands is used to obtain a list of all files by modification time?
Options: ls -1,    ls -t,    ls -i,    ls -R

Ans:B ,B


If the ASCII character G is sent and the character D is received, what type of error is this?
Options: single-bit,    multiple-bit,    burst,    recoverable

Ans:C ,C


A hybrid computer uses a _____ to convert digital signals from a computer into analog signals.
Options: Modulator,    Demodulator,    Modem,    Decoder

Ans:C,(Canswer


An anti static strap uses a small _____ to make sure you do not become the least path of resistance to the ground?
Options: capacitor,    diode,    transistor,    resistor

Ans:D ,D


What command is used with vi editor to delete three words?
Options: 3$d,    3 dw,    3 x,    3 dd

Ans:B ,B


. …. are specially designed computer chips that reside inside other devices, such as your car or electric thermostat
Options: a. Server b. Embedded computer c. Robotic computer d. Mainframes

Ans:2 – b ,2 – b


A packet switching network that was sponsored by the Commission of the EEC and became operational in 1979 is
Options: LAN,    Broadband network,    Star network,    Euronet

Ans:D ,D


When Word flags a possible spelling or grammar error, it also changes the mark on the Spelling and Grammar Status icon to a _____.
Options: a. green X b. green check mark c. red X d. red check mark

Ans:– C,– C


. “Qtr 1, Qtr 2, Qtr 3” is an example of a
Options: a. Formula b. Function c. Series d. Syntax

Ans:– c,– c


The name given to the test that determines whether a machine can think is the:
Options: Gaussian test,    McCarthy test,    Turing test,    Boolean test

Ans:C ,C


You are editing an worksheet that you had previously saved. If you want to save the edited sheet without losing the original one, which command should you use?
Options: New B. Save As C. Edit D. Save

Ans:– B ,


Which of the following is not one of the three ways to classify an action assertion?
Options: Condition,    Integrity Control,    Authorization,    Enabler

Ans:D ,D


.Each array declaration need not give, implicitly or explicitly, the information about
Options: A)the name of array b.the data type of array c.the first data from the set to be stored d.the index set of the array

Ans:C,C


. What does an inner join display?
Options: a. Records from the second recordset and only records from the first recordset where the common fields are equal b. Records from the first recordset and only records from the second recordset where the common fields are equal c. Records that have the same value in the common field d. Records from the first recordset only

Ans:8 – c ,8 – c


. Who built the world’s first electronic calculator using telephone relays, light bulbs and batteries?
Options: A) Claude Shannon B) Konrard Zues C) George Stibits D) Howard H. Aiken

Ans:C,C


Metadata enables database designers and users to do all of the following except:
Options: sample data.,    understand what data exist.,    what the fine distinctions are between similar data items.,    what the data mean.

Ans:A ,A


When was punched-card equipment used for the first time to process the British census?
Options: 1910,    1907,    1911,    1914

Ans:C,C


Which generation of computer is still under development
Options: A) Fourth Generation B) Fifth Generation C) Sixth Generation D) Seventh Generation

Ans:-B,-B


The memory which is programmed at the time it is manufactured
Options: ROM,    RAM,    PROM,    EPROM

Ans:A ,A


14. While working with MS-DOS, which command is used to rename a file named file1.doc to file2.doc from a different directory called dir1?
Options: a. Ren2.doc dirfile1.doc b. Ren file1.doc file2.doc c. Ren .docdir.doc d. Ren dir1file1.doc file2.doc

Ans:Correct Answer: d,Correct Answer: d


While working with mail command, which command is used to save mail in a separate file?
Options: s,    r,    w,    d

Ans:A ,A


One data dictionary software package is called
Options: DB/DC dictionary,    TOTAL,    ACCESS,    any of the above

Ans:A ,A


The amount of uncertainty in a system of symbol is called
Options: Bandwidth,    Entropy,    loss,    Quantum

Ans:B ,B


Which of the following commands is used to have a two-way communication with any person who is currently logged in?
Options: mail,    mesg,    write,    grep

Ans:C ,C


_____ means that the manager spends his or her time dealing with exceptions or those situations which are out of control
Options: relevant,    management by exception,    predictive reports,    control

Ans:B ,B


In LISP, the function evaluates <object> and assigns this value to the unevaluated <sconst>.
Options: (constant <sconst> <object>),    (defconstant <sconst> <object>),    (eva <sconst> <object>),    (eva <object> <sconst>)

Ans:B ,B


What are the data transmission channels available for carrying data from one location to another?
Options: Narrowband,    Voiceband,    Broadband,    All of the above

Ans:D ,D


An operation that will increase the length of a list is
Options: Insert,    Look-up,    Modify,    All of the above

Ans:A ,A


Which of the following statements correct about the below program? #include<stdio.h> int main() { struct emp { char name[25]; int age; float sal; }; struct emp e[2]; int i=0; for(i=0; i<2; i++) scanf("%s %d %f", e[i].name, &e[i].age, &e[i].sal); for(i=0; i<2; i++) scanf("%s %d %f", e[i].name, e[i].age, e[i].sal); return 0; }
Options: Error: scanf() function cannot be used for structures elements.,    The code runs successfully.,    Error: Floating point formats not linked Abnormal program termination.,    Error: structure variable must be initialized.

Ans:C ,C


. To make file in MS Dos we need command
Options: a. Copy b. Copy con c. MD d. Make File

Ans:0 – b ,0 – b


. Which command brings you to the first slide in your presentation?
Options: a. Next slide button b. Page up c. Ctrl + home d. Ctrl + end

Ans:5 – C ,5 – C


. Which of the following is a class of computers based on model?
Options: A) Digital Computer B) Hybrid Computers C) Analog Computers D) AT Computers

Ans:D,D


What are the three options available in Insert >> Picture menu?
Options: a. Clipart, Pictures, Shapes b. Clipart, From File, Shapes c. Clipart, From Files, AutoShapes d. Clipart, Pictures, AutoShapes

Ans: – C , – C


Which command is used to remove an index from the database in SQL?
Options: DELETE INDEX,    DROP INDEX,    REMOVE INDEX,    ROLL BACK INDEX

Ans:B ,B


Absolute Zero temperature equals
Options: 0o C,    -273o C,    -276o C,    25o C

Ans:B ,B


Which of the following section does not exist in a slide layout?
Options: a. Titles b. Lists c. Charts d. Animations

Ans:– D ,– D


. We can save and protect the workbook by
Options: Write Reservation Password B. Protection Password C. Read-only Recommended D. Any of the above

Ans: – D ,


Each entity is represented as a(n):
Options: tuple.,    table.,    attribute.,    file.

Ans:B ,B


. You have a Command button in the Form Footer, you click the Tabular Control Layout; an attached label will be added in what section?
Options: a. Detail b. Form Footer c. Form Header d. Page Header

Ans:4 – c ,4 – c


The application layer of a network
Options: establishes, maintains, and terminates virtual circuits,    defines the user's port into the network,    consists of software being run on the computer connected to the network,    All of the above

Ans:C ,C


Point out the error in the program? #include<stdio.h> int main() { struct bits { float f:2; }bit; printf("%d\n", sizeof(bit)); return 0; }
Options: 4,    2,    Error: cannot set bit field for float,    Error: Invalid member access in structure

Ans:C ,C


What does a switch do when a frame is received on an interface and the destination hardware address is unknown or not in the filter table?
Options: Forwards the switch to the first available link,    Drops the frame,    Floods the network with the frame looking for the device,    Sends back a message to the originating station asking for a name resolution

Ans:C ,C


To enable RIPng, which of the following would you use?
Options: Router1(config-if)# ipv6 ospf 10 area 0.0.0.0,    Router1(config-if)# ipv6 router rip 1,    Router1(config)# ipv6 router eigrp 10,    Router1(config-rtr)# no shutdown

Ans:B ,B


. Which command will be used to display only the file name and extensions in wide format?
Options: a. Dir/b b. Dir A: c. Dir/s d. Dir/w

Ans:8 – d ,8 – d

www.000webhost.com