Minimal Superkeys are called


Options: Schema keys B. Candidate keys C. Domain keys D. Attribute keys

Ans:– B ,






More Database Systems Related questions:


The symbols used in describing the syntax of a programming language are
Options: 0,    {},    "",    <>

Ans:D ,D


Ctrl + I
Options: Italic B. Left Indent C. Save Document D. Close Document

Ans:– A ,


A LISP environment consists of a language, a programming environ¬ment, and:
Options: random-access storage,    a processor,    a large address,    a set of functions

Ans:D ,D


In a one-to-many relationship, the entity that is on the many side of the relationship is called a(n) ________ entity.
Options: parent,    child,    instance,    subtype

Ans:B ,B


You can show the shortcut menu during the slide show by
Options: a. Clicking the shortcut button on the formatting toolbar b. Right clicking the current slide c. Clicking an icon on the current slide d. a and b

Ans: – B , – B


. Which of the following methods cannot be used to edit the content of cell?
Options: a. Pressing the Alt key b. Clicking the formula bar c. Pressing F2 d. Double clicking the cell

Ans:– a,– a


. Save operation means
Options: a. Put data into processor b. Put data into internal memory c. Put data into secondary storage d. Put data into monitor

Ans:9 – c ,9 – c


. The contents of information are stored in
Options: A) Memory data register B) Memory address register C) Memory arithmetic registers D) Memory access register

Ans:3-A,3-A


. The storage subsystem in a microcomputer consists mainly of __ or __ media with varying capacities
Options: A) Memory or video B) Magnetic or optical C) Optical or memory D) Video or magnetic

Ans:B,B


Which is a permanent database in the general model of compiler?
Options: Literal Table,    Identifier Table,    Terminal Table,    Source code

Ans:C ,C


Which of the following is true for machine language.
Options: Repeated execution of program segments,    Depicting flow of data in a system,    A sequence of instructions which, when followed properly, solves a problem,    the language which communicates with the computer using only the binary digits 1 and 0.

Ans:D ,D


. In a database table, the category of information is called __________
Options: a. Tuple b. Field c. Record d. All of above

Ans:9 – b ,9 – b


The situation when in a linked list START=NULL is
Options: a. underflow b. overflow c. housefull d. saturated

Ans:- a,- a


A physical connection between the microprocessor memory and other parts of the microcomputer is known as
Options: Path,    Address bus,    Route,    All of the above

Ans:B ,B


Access time in a computer memory is the time required to
Options: Locate the stored data,    Retrieve the stored data,    Both locate and retrieve the data,    All of the above

Ans:C ,C


Backing storage is so named because it
Options: is always kept at the back of the CP.U.,    is slow and backward,    backs up the computer's main memory,    lags behind the main memory

Ans:C ,C


What is the maximum header size of an IP packet?
Options: 32 bytes B. 64 bytes C. 30 bytes D. 60 bytes

Ans:– D ,


In OLE DB, which of the following represents characteristics of the recordset abstraction?
Options: Properties,    Collections,    Methods,    Abstractions

Ans:A ,A


In a database table, the category of information is called ____________
Options: a. tuple b. field c. record d. All of above

Ans:dash; b,dash; b


The most important advantage of a video disk is
Options: Compactness,    Potential capacity,    Durability,    Cost effectiveness

Ans:B ,B


A network designer wants to connect 5 routers as point-to-point simplex line. Then the total number of lines required would be
Options: 5,    10,    20,    32

Ans:B ,B


The CPU chip used in a computer is partially made out of
Options: silica,    carbon,    copper,    gold

Ans:A,A


What is a portion of memory that serves as a temporary repository for data as it waits for a given action?
Options: Memory Pool,    Cache,    Processor,    Processor pool

Ans:B ,B


. Computer operators
Options: A) writes computer programs for specific problems B) operate the device which input and output data from the computer C) normally require a college degree in computer science D) all of the above

Ans:B,B


If you delete the contents of NVRAM and reboot the router, what mode will you be in?
Options: Privileged mode,    Global mode,    Setup mode,    NVRAM loaded mode

Ans:C ,C


. One computer that is not considered a portable is
Options: A) Minicomputer B) Laptop computer C) Notebook computer D) All of above

Ans:A,A


. The command used to display all files (.exe) from the system
Options: a. Dir *.exe b. Dir *.exe/s c. Dir *.exe/all d. None of above

Ans:2 – b ,2 – b


Electron current is flowing through a conductor in a direction you might describe as straight into this page. What is the direction of the resulting magnetic field?
Options: Clockwise,    Counterclockwise,    Out of this page,    Into this page

Ans:B ,B


What PowerPoint feature will you use to apply motion effects to different objects of a slide?
Options: a. Slide Transition b. Slide Design c. Animation Objects d. Animation Scheme

Ans: – D , – D


  To print the PowerPoint presentation, press
Options: Ctrl + T B. Ctrl + E C. Ctrl + S D. Ctrl + P

Ans:– D ,


In SQL, which command(s) is(are) used to change a table's storage characteristics?
Options: ALTER TABLE,    MODIFY TABLE,    CHANGE TABLE,    All of the above

Ans:A ,A


The complexity of linear search algorithm is
Options: A)O(n) b.O(log n) c.O(n2) d.O(n log n)

Ans:A,


A critical region is
Options: a program segment that has not been proved bug-free,    a program segment that often causes unexpected system crashes,    a program segment where shared resources are accessed,    one which is enclosed by a pair of P and V operations on semaphores

Ans:D ,D


It is a database object to view, change, and analyze data in different ways
Options: a. query b. form c. report d. None of the above

Ans:ndash; a,ndash; a


What IRQ is used for COM 2?
Options: 4,    3,    2,    1

Ans:B ,B


Which of the following is not a part of a Data Flow Diagram?
Options: disk storage,    arrow,    Data store,    process represented by a bubble circle (circle)

Ans:A ,A


A transaction manager is which of the following?
Options: Maintains a log of transactions,    Maintains before and after database images,    Maintains appropriate concurrency control,    All of the above.

Ans:D ,D


53. A master document contains_________, each of which contains a pointer to a file on a disk?
Options: a. Placeholders b. subdocuments c. bookmarks d. references

Ans:–  B ,–  B


. Which is the system prompt?
Options: a. c> b. c:> c. c:> d. None

Ans:7 – b ,7 – b


  Slides can have
Options: title, text, graphs B. drawn objects, shapes C. clipart, drawn art, visual D. any of the above

Ans:– D ,


Which of the following communications service provides message preparation and transmission facilities?
Options: Teletex,    Teletext,    x400,    Fax

Ans:A ,A


Regarding a VDU, which statement is more correct?
Options: It is an output device,    It is an input device,    It is a peripheral device,    It is a hardware item

Ans:C ,C


Who developed the first personal computer spreadsheet package called Visicalc?
Options: Niklaus Wirth,    Dan Bricklin,    Bob Frankston,    both (b) and (c)

Ans:D,D


. “New Comment” option can be found under _________ tab
Options: a. Insert b. Data c. Review d. View

Ans:– c,– c


Which of the following is not currently a topic in computer science?
Options: Speech recognition,    Artificial intelligence,    Thermodynamics,    Multiprocessing

Ans:C,C


Which command is used to establish a link between a source document and a destination document?
Options: Tools, Link, Documents B. Tools, Link C. Edit, Link D. Edit, Paste Special

Ans:– D ,


In Prototyping, the following are used
Options: screen generators,    input generators,    application generators,    All of the above

Ans:D ,D


To _____ is to decide in advance on a course of action.
Options: master,    decision,    plan,    control

Ans:C ,C


What does that acronym VGA stand for?
Options: Extended Graphics Adapter,    Enhanced Graphics Array,    Video Graphics Array,    Color Graphics Array

Ans:C ,C


. A word field may consist of an optional field instruction called a(n) ______ 
Options: a. subdocument b. symbol c. signal d. switch

Ans:–  D,–  D

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