Which of the following is an unary operation?


Options: a. Selection operation b. Generalized selection c. Primitive operation d. Projection operation

Ans:– b ,


Description: mcqquestions

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

Hits Today: 7866






More Database Systems Related questions:


Entities of a given type are grouped into a(n):
Options: database.,    entity class.,    attribute.,    ERD.

Ans:B ,B


. Which of the printers used in conjunction with computers uses dry ink powder?
Options: A) Daisy wheel printer B) Line printer C) Laser printer D) Thermal printer

Ans:8-C,8-C


How do you magnify your document?
Options: A. View, Zoom B. Format, Font C. Tools, Options D. Tools, Customize

Ans:– A ,View, Zoom


IBM's Micro Channel Architecture (MCA) specifies which type of the following bit access widths?
Options: 8 bit & 16 bit,    16 bit & 24 bit,    16 bit & 32 bit,    32 bit & 64 bit

Ans:C ,C


. Dial up connection allows you to
Options: a. Connect ISP b. Internet c. Server d. All of above

Ans:1 – a ,1 – a


. Command Interpreter is also known as
Options: a. Prompt b. Shell c. Command d. DOS Prompt

Ans:0 – b ,0 – b


Which of the following is true concerning triggers?
Options: You do not create them with SQL.,    They execute against only some applications that access a database.,    They have an event, condition, and action.,    They cannot cascade (cause another trigger to fire).

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 ,A


What is the highest address possible if 16 bits are used for each address?
Options: 65536,    12868,    16556,    643897

Ans:A ,A


The 802.5 standard implements a way for preventing collisions on the network. How are collisions prevented when using this standard?
Options: CSMA/CD,    Token passing,    Collision detection,    Time sharing

Ans:B ,B


In inkjet printers, what is the most common problem with the paper tray?
Options: inconsistent printing,    malfunctioning pick-up rollers,    misalignment of the sheet feeder,    paper jamming on the ink cartridge

Ans:B ,B


3. The primary purpose of an operating system is…..
Options: a. To make the most efficient use of the computer hardware b. To allow people to use the computer c. To keep systems programmers employed d. To make computers easier to use

Ans:Correct Answer: a,Correct Answer: a


. Which of the following is the largest unit?
Options: A) data B) field C) record D) database file

Ans:4-D,4-D


. Which PowerPoint feature adds special effects to modify the appearance of the slides and the timing between each slide?
Options: a. Color Schemes b. Animation c. Transition Settings d. Handouts

Ans:2 – C ,2 – C


In OLAP, we are interested in ________ .
Options: levels only,    dimensions only,    measures only,    measures and dimensions

Ans:D ,D


A ________ is a stored program that is attached to a table or a view.
Options: pseudofile,    embedded SELECT statement,    trigger,    None of the above is correct.

Ans:C ,C


1024 bytes represent a
Options: Megabyte,    Gigabyte,    Kilobyte,    None of the above

Ans:C ,C


. “Ctrl + PageDown” is used to
Options: Moves the cursor one Paragraph Down B. Moves the cursor one Page Down C. Moves the cursor one Line Down D. Moves the cursor one Screen Down

Ans:– B ,


If you need to edit a relationship
Options: a. Right click the relationship line and choose Edit Relationship b. Double click the relationship line c. Both of above d. None of above

Ans:ndash; c,ndash; c


Which command-line tool is included with every Microsoft TCP/IP client?
Options: DHCP,    WINS,    PING,    WINIPCFG

Ans:C ,C


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

Ans:B ,B


. The autofill feature
Options: a. Extends a sequential series of data b. Automatically adds a range of cell values c. Applies a boarder around selected cells d. None of above

Ans:– a,– a


A dielectric material is:
Options: a good conductor,    a good insulator,    a poor conductor of electrostatic fields,    a good conductor of magnetic fields

Ans:B ,B


For some relations, changing the data can have undesirable consequences called:
Options: referential integrity constraints.,    modification anomalies.,    normal forms.,    transitive dependencies.

Ans:B ,B


A top-to-bottom relationship among the items in a database is established by a 
Options: a. hierarchical schema b. network schema c. relational schema d. all of the above

Ans:.a,.a


A microprocessor is:
Options: controlled by a program,    an integrated circuit,    relatively inexpensive,    All of the above

Ans:D ,D


45. Which of the following command is not available in Tools menu?
Options: a. Auto text b. Autocorrect c. Auto summarize d. Macro

Ans:– A ,– A


To center worksheet titles across a range of cells, you must
Options: a. Select the cells containing the title text plus the range over which the title text is to be centered b. Widen the columns c. Select the cells containing the title text plus the range over which the title text is to be enfettered d. Format the cells with the comma style

Ans:#8211; a,#8211; a


The time factor when determining the efficiency of algorithm is measured by
Options: a. Counting microseconds b. Counting the number of key operations c. Counting the number of statements d. Counting the kilobytes of algorithm  

Ans:b,b


To insert a drop cap in one of the paragraph you should access
Options:  A) Insert Menu, B) Format, C) Tools, D) None of above, 

Ans:B,B


Doubling the operating frequency of a purely capacitive circuit:
Options: has no effect on the total circuit current,    doubles the amount of total current,    cuts the total current by one-half,    thrice the amount of total current

Ans:B ,B


. What is the symbol for dividing? A ./ B. % C. & D. #
Options: A ./ B. % C. & D. #

Ans:– A ,/


. What type of relationship is created when you select a primary key in both related tables?
Options: a. One-To-One b. Indeterminate c. One-To-Many d. Many-To-Many

Ans:7 – a ,7 – a


The Paste Special command lets you copy and paste:
Options: a. Multiply the selection by a copied value b. Cell comments c. Formatting options d. The resulting values of a formula instead of the actual formula

Ans:#8211; d,#8211; d


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

Ans:C ,C


Which approach to speech recognition avoids the problem caused by the differences in the way words are pronounced according to context?
Options: continuous speech recognition,    connected word recognition,    isolated word recognition,    speaker-dependent recognition

Ans:C ,C


Which of the following best describes a computer-based information system?
Options: A system in which a computer is used to turn data into information,    Inputting data,    Processing data,    Performing complex mathematical calculations

Ans:A ,A


The file key of the fixed assets file includes the
Options: fixed asset account number,    acquisition date,    asset identification number,    depreciation account number

Ans:C ,C


COM1 is typically represented by which of the following?
Options: 15 pin port,    9 pin male port,    9 pin female port,    25 pin male port

Ans:B ,B


A complete microcomputer system consists of
Options: a . microprocessor b . memory c . peripheral equipment d . all of above

Ans:3.d,3.d


A variable P is called pointer if
Options: a. P contains the address of an element in DATA. b. P points to the address of first element in DATA c. P can store only memory addresses d. P contain the DATA and the address of DATA

Ans:- a,- a


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

Ans:C ,machine language


Which of the following network types have a designated router and a backup designated router assigned? Broadcast Point-to-point NBMA NBMA point-to-point
Options: 1, 2 and 3,    1 and 3,    3 and 4,    All of the above

Ans:B ,B


Which two of the following commands will place network 10.2.3.0/24 into area 0? router eigrp 10 router ospf 10 network 10.0.0.0 network 10.2.3.0 0.0.0.255 area0 network 10.2.3.0 0.0.0.255 area 0
Options: 1 and 4,    2, 4, and 5,    2 and 5,    3 and 4

Ans:C ,C


. Comments can be added to cells using …..
Options: a. Edit -> Comments b. Insert -> Comment c. File -> Comments d. View –> Comments

Ans:– b,– b


14. What is the name of the latest server operating system developed by Microsoft?
Options: a. Windows NT b. Windows 2000 c. Windows XP d. Windows 2003

Ans:Correct Answer: d,Correct Answer: d


What type of computer programming is used for airplane ticket reservation system?
Options: Multi programming,    Real time programming,    Time sharing,    Batch programming

Ans:B,B


. Which of the following storage device can store the largest amount of data?
Options: A) Hard Disks B) Flash Disks C) Blu-Ray Disks D) DVDs

Ans:8-A,8-A


. 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:7 – C ,7 – C


The daily processing of corrections to customer accounts best exemplifies the processing mode of:
Options: Batch processing,    Real-time processing,    Time-sharing,    Offline processing

Ans:A ,A

www.000webhost.com