_______ allow us to identify uniquely a tuple in the relation.


Options: Superkey B. Domain C. Attribute D. Schema

Ans:– A ,


Description: mcqquestions

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

Hits Today: 19303 | Level: Moderate




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


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

Click Here to take quick 5 mins MCQ test to find out.

More Database Systems Related questions:


Which of the following is not a restriction for a table to be a relation?
Options: The cells of the table must contain a single value.,    All of the entries in any column must be of the same kind.,    The columns must be ordered.,    No two rows in a table may be identical.

Ans:C ,C


. From which generation computers the printers were used?
Options: A) first B) second C) third D) fourth

Ans:9-B,9-B


. Which of the following term means to reckon?
Options: A) putare B) com C) computa D) computar

Ans:7-A,7-A


The lowest form of computer language is called:
Options: FORTRAN,    BASIC,    machine language,    COBOL

Ans:C ,machine language


An application program interface (API) is which of the following?
Options: The same thing as ODBC.,    Middleware that does not provide access to a database.,    Middleware that provides access to a database.,    The same thing as JDBC.

Ans:C ,C


. Which converts the user data into machine readable form?

Options: A) input unit, outpu unit, control unit B) central processing unit C) output unit D) decoder unit

Ans:A,A


. In Access 2007, to set a table to open as a document tab, you need to go to the ____.
Options: a. Microsoft Office button b. Navigation Pane c. Quick Access toolbar d. Database Tools command tab

Ans:5 – a ,5 – a


What is not true of a Java bean?
Options: There are no public instance variables.,    All persistent values are accessed using getxxx and setxxx methods.,    It may have many constructors as necessary.,    All of the above are true of a Java bean.

Ans:C ,C


After trying to unload a TSR, you get an error message saying that other TSRs were loaded after the one you tried to remove. Which of the following commands could you use to see the current load order?
Options: MEM /P,    MEMMAKER,    MEM /C,    SYS:

Ans:D ,D


. You want to set such that when you type Baishakh and drag the fill handle, Excel should produce Jestha, Aashadh and so on. What will you set to effect that?
Options: a.  Custom List b.  Auto Fill Options c.  Fill Across Worksheet d.  Fill Series

Ans:– a,– a


'ITS' stands for
Options: Intelligent Teaching Systems,    International Tutoring Systems,    Intelligent Tutoring Systems,    All of the above

Ans:C ,C


Sending a file from your personal computer's primary memory or disk to another computer is called
Options: uploading,    downloading,    logging on,    hang on

Ans:A ,A


How would you allow device drivers and TSR's to be loaded into Upper Memory Blocks ?
Options: DOS=High,    devicehigh=,    loadhigh=,    DOS=UMB

Ans:D ,D


Which one of the following statements is true for the voltages in a series RL circuit?
Options: The total voltages is equal to the sum of the voltages across the resistance and inductance,    The voltage always has the same amplitude and phase for every part of the circuit,    The total voltage is less than the sum of the voltages across the resistance and inductance,    The total voltage lags the total current by less than 90

Ans:C ,C


. .... runs on a computer hardware and serves as a platform for other system to run on
Options: a. Operating system b. Application system c. System software d. All of above

Ans: a, a


Which of the following data constraints would be used to specify that the value of a cell in one column must be less than the value of a cell in another column in the same row of the same table?
Options: A domain constraint,    A range constraint,    An intrarelation constraint,    An interrelation constraint

Ans:C ,C


Which of the following is considered to be the address after translation?
Options: Inside local,    Outside local,    Inside global,    Outside global

Ans:C ,C


If the present value in a timer in the TI510 is 8, how many milliseconds is required from the time the timer is started until the output is enabled?
Options: 18.0,    133.36,    149.88,    1275.41

Ans:B ,B


How to create additional Guide Lines?
Options: by holding Ctrl key, click on existing Guide Line and drag B. by holding Alt key, click on existing Guide Line and drag C. by holding Ctrl + Alt key, click on existing Guide Line and drag D. Additional Guide Lines cannot be created

Ans:– A ,


The MAC (Media Access Control) address of the network card is used in both Ethernet and Token-Ring networks and is essential for communication. What does MAC provide?
Options: A logical address that identifies the workstation,    A physical address that is randomly assigned each time the computer is started,    A physical address that is assigned by the manufacturer,    The logical domain address for the workstation

Ans:C ,C


. A Pixel is __________
Options:  A computer program that draws picture B.  A picture stored in secondary memory C.  The smallest resolvable part of a picture D.  None of these

Ans: – C ,


. A transaction completes its execution is said to be
Options: Saved B. Loaded C. Rolled D. Committed

Ans: – D ,


Which file executes commands in DOS?
Options: MS-DOS.SYS,    CONFIG.SYS,    COMMAND.COM,    SYSTEM.INI

Ans:C ,C


An optical input device that interprets pencil marks on paper media is
Options: O.M.R,    Punch card reader,    Optical scanners,    Magnetic tape

Ans:A,(Aanswer


Which is considered a direct entry input device?
Options: A) Optical scanner B) Mouse and digitizer C) Light pen D) All of the above

Ans:-D,-D


Data systems for planning are often called
Options: decision analysis systems,    planning analysis systems,    decision support systems,    All of the above

Ans:C ,C


"Parity" errors usually indicate bad memory
Options: True,    False,    ,    

Ans:A ,A


In Decision trees
Options: nodes represent the conditions, with the right side of tree listing the actions to be taken,    the root is drawn on the left and is the starting point on the decision sequence.,    the branch depends on the condition and decisions to made,    All of the above

Ans:D ,D


. What was the expected feature of fifth generation computers when Japan started FGCS?
Options: A) Operating Systems B) Paralled Processing C) ULSI D) None of above

Ans:B,B


Which of the following files is used for NetBIOS name resolution?
Options: HOSTS,    LMHOSTS,    ARP,    FQDN

Ans:B ,B


.The Average case occur in linear search algorithm
Options: A)When Item is somewhere in the middle of the array b.When Item is not in the array at all c.When Item is the last element in the array d.When Item is the last element in the array or is not there at all

Ans:A,A


The distinguishable parts of a record are called
Options: files,    data,    fields,    database

Ans:C ,C


. Which of the following uses the spelling and grammar feature to indicate an incorrect spelling?
Options: a. The incorrect word appears in all capital letters b. The incorrect word has a wavy red line under it c. The incorrect word appears italicized d. The incorrect word appears bold

Ans:7 – B ,7 – B


The command used to remove the directory is;
Options: rmdir,    rd,    remove,    rdir

Ans:A ,A


Binary numbers need more places for counting because
Options: They are always big numbers,    Any no. of 0's can be added in front of them,    Binary base is small,    0's and l's have to be properly spaced apart

Ans:C,(Canswer


. Each excel file is a workbook that contains different sheets. Which of the following can not be a sheet in workbook?
Options: a.  work sheet b.  chart sheet c.  module sheet d.  data sheet

Ans:– d,– d


A file produced by a spreadsheet
Options: is generally stored on disk in an ASCII text format,    can be used as it by the DBMS,    can be used for graphic,    All of the above

Ans:A ,A


What is meant by a dedicated computer?
Options: Which is used by one person only,    Which is assigned one and only one task,    Which uses on kind of software,    Which is meant for application software only

Ans:B ,B


The marketing authority contributing the most to a definition of a structure for the marketing information system is
Options: Philip Vegas,    F.A. Fisher,    Philip Kotler,    Roger McSack

Ans:C ,C


. The __________ determines how long you must hold down an alphanumeric key before the keyboard will repeat the character.
Options: a. strike rate b. repeat rate c. default rate d. threshold rate

Ans:0 – b ,0 – b


. Essential files of MS DOS are
Options: a. Command . com b. Io.sys c. Msdos.sys d. All of above

Ans:8 – d ,8 – d


Difference between Decision - Tables and Decision Trees is (are):
Options: value to end user,    form of representation,    one shows the logic while other shows the process,    All of the above

Ans:B ,B


In comparison with static RAM memory, the dynamic RAM memory has
Options: lower bit density and higher power consumption,    higher bit density and higher power consumption,    lower bit density and lower power consumption,    higher bit density and lower power consumption

Ans:D,D


The use of packaged data models can offer which of the following benefits?
Options: Reduce implementation time and costs,    Higher quality models,    Both A and B.,    Neither A nor B.

Ans:C ,C


What will be the output of the program? #include<stdio.h> int main() { char huge *near *far *ptr1; char near *far *huge *ptr2; char far *huge *near *ptr3; printf("%d, %d, %d\n", sizeof(ptr1), sizeof(*ptr2), sizeof(**ptr3)); return 0; }
Options: 4, 4, 4,    2, 4, 4,    4, 4, 2,    2, 4, 8

Ans:A ,A


Which of the following is true when describing a global unicast address?
Options: Packets addressed to a unicast address are delivered to a single interface.,    These are your typical publicly routable addresses, just like a regular publicly routable address in IPv4.,    These are like private addresses in IPv4 in that they are not meant to be routed.,    These addresses are meant for nonrouting purposes, but they are almost globally unique so it is unlikely they will have an address overlap.

Ans:B ,B


. Which of the following is not an action query?
Options: a. add b. delete c. make-table d. update

Ans:– a,– a


. Any report, including a basic report, can be modified in __.
Options: a. Form View b. Layout View c. Print Preview d. Report View

Ans:1 – b ,1 – b


A process that is repeated, evaluated, and refined is called:
Options: diagnostic,    descriptive,    interpretive,    iterative

Ans:D ,D


Which of the following are word processing software?
Options: a. WordPerfect b. Easy Word c. MS Word d. All of above

Ans:– D,– D

www.000webhost.com