Which of the following is Relation-algebra Operation


Options: Select B. Union C. Rename D. All of the above

Ans:– D ,






More Database Systems Related questions:


Which device uses a DMA channel?
Options: Modem,    Network Card,    Sound Card,    All of the above

Ans:C ,C


. Which of the following will happen when data is entered into a memory location?
Options: A) It will add to the content of the location B) It will change the address of the memory location C) It will erase the previous content D) It will not be fruitful if there is already some data at the location

Ans:C,C


. Generally, the DATE is entered in the form
Options: a. DD-YY-MM b. YY-DD-MM c. MM-YY-DD d. MM-DD-YY

Ans:Correct Answer: d ,Correct Answer: d


Data Manipulation Language enables users to
Options: Retrieval of information stored in database B. Insertion of new information into the database C. Deletion of information from the database D. All of the above

Ans:– D ,


Major expressions used with find command to select file is it has been accessed in more than 375 days, is
Options: -atime +365,    -mtime + 365,    -atime -365,    -mtime -365

Ans:A ,A


Which of the following are the best units of data on an external storage device?
Options: Bits B. Bytes C. Hertz D. Clock cycles

Ans:8 – B ,


_______ provides a connection-oriented reliable service for sending messages
Options: TCP B. IP C. UDP D. All of the above

Ans:– A ,


Declare the following statement? "A pointer to an array of three chars".
Options: char *ptr[3]();,    char (*ptr)*[3];,    char (*ptr[3])();,    char (*ptr)[3];

Ans:D ,D


The time lag, between the keying of the last character on the keyboard input and the appearance of the first output character on the screen, is known as
Options: Key,    System review,    response time,    batch Processing

Ans:C ,C


Large computer system typically uses:
Options: Line printers,    Ink-jet printers,    Dot-matrix printers,    Daisy wheel printers

Ans:A,A


Which of the following is a function of the process step of data processing?
Options: protect,    index,    retrieval,    update

Ans:C ,C


What is the smallest width of a column?
Options:  A) 0", B) 0.5", C) 1", D) 1.5", 

Ans:-B,-B


. Selecting the Rows 5 & 6 then choose Insert->RoWhat will happen?
Options: a. 2 Rows will be inserted after Row 4 b. 2 Rows will be inserted after Row 5 c. 2 Rows will be inserted after Row 6 d. 2 Rows will be inserted after Row 7

Ans:– a,– a


Who designed the first general purpose electronic digital computer "ENIAC" ?
Options: Van-Neumann,    Joseph M Juoquard,    J. Presper Ecket and John W Mauchly,    All of the above

Ans:C ,C


What is (void*)0?
Options: Representation of NULL pointer,    Representation of void pointer,    Error,    None of above

Ans:A ,A


. If you want to have a blank line after the title in a worksheet, what is the best thing for you to do?
Options: a. Re-format the spreadsheet b. Insert a row c. Increase the column width d. Use the spacebar

Ans:– b,– b


In the operation of a programmable controller:
Options: all of the logic status is maintained in memory,    any latched data must be done using an external latching relay,    mathematics cannot be performed,    All of the above

Ans:A ,A


Which of the following devices could be part of a sensor?
Options: thermometer,    brake,    relay,    clutch.

Ans:A ,A


. How many characters can be entered in a single command line?
Options: a. 64 b. 127 c. 80 d. 90

Ans:6 – b ,6 – b


The location of some system configuration and system administrator executable files, is:
Options: /home,    /proc,    /var,    /sbin

Ans:D ,D


. Which of the following is not a part of Slide Design?
Options: a.  Design Template b.  Color Scheme c.  Animation Scheme d.  Slide Layout

Ans:3 – D ,3 – D


UDP is:
Options: Not a part of the TCP/IP suite,    Connection oriented and unreliable,    Connection orientated and reliable,    Connectionless and unreliable

Ans:D ,D


. DOS stand for
Options: a. Dummy operating system b. DOS operating system c. Dirty operating system d. Disk operating system

Ans:5 – d ,5 – d


Point out the error in the program. #include<stdio.h> #include<stdlib.h> union employee { char name[15]; int age; float salary; }; const union employee e1; int main() { strcpy(e1.name, "K"); printf("%s", e1.name); e1.age=85; printf("%d", e1.age); printf("%f", e1.salary); return 0; }
Options: Error: RValue required,    Error: cannot modify const object,    Error: LValue required in strcpy,    No error

Ans:B ,B


The first step in troubleshooting many problems is to verify which of the following?
Options: The subnet mask is valid,    TCP/IP is installed correctly on the client,    The WINS server is running,    The BDC is operable

Ans:B ,B


If you are to use [Control-c] as the interrupt key instead of [Del], then you will have to use
Options: tty ^c,    stty intr \^c,    stty echoe,    stty echo \^a

Ans:B ,B


In which year the first operating system was developed
Options: a. 1910 b. 1940 c. 1950 d. 1980

Ans:Correct Answer: c ,Correct Answer: c


What will be the output of the program ? #include<stdio.h> int main() { float arr[] = {12.4, 2.3, 4.5, 6.7}; printf("%d\n", sizeof(arr)/sizeof(arr[0])); return 0; }
Options: 5,    4,    6,    7

Ans:B ,B


Who is considered to be the "father" of artificial intelligence?
Options: Fisher Ada,    John McCarthy,    Allen Newell,    Alan Turning

Ans:B ,B


You can add a row using SQL in a database with which of the following?
Options: ADD,    CREATE,    INSERT,    MAKE

Ans:C ,C


Which of the following is true when describing a unique local 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:D ,D


The function of CPU is
Options: to provide a hard copy,    to read, interpret and process the information and instruction,    to communicate with the operator,    to provide external storage of text

Ans:B ,B


It is a query that when run displays its own dialog box prompting you for information, such as
Options: a. Select b. crosstab c. Parameter d. Append

Ans:ndash; c,ndash; c


You are working with a network that has the network ID 192.168.10.0. What subnet should you use that supports up to 12 hosts and a maximum number of subnets?
Options: 255.255.255.192,    255.255.255.224,    255.255.255. 240,    255.255.255.248

Ans:C ,C


. According to the Leszynski Naming Conventions, which of the following is the prefix for a text box control?
Options: a. txt b. txb c. tbc d. tex

Ans:1 – a ,1 – a


XML is which of the following?
Options: A scripting language that states the rules for tagging elements.,    A programming language that states the rules for tagging elements.,    A programming language that allows the creation of customized tags.,    A scripting language that allows the creation of customized tags.

Ans:D ,D


79. Which would you choose to save a document with a new name?
Options: a. Press Ctrl+S b. Click File, Save c. Click Tools, Options, Save d. Click File, Save As

Ans:–  D ,–  D


When not in use, it is very important to keep 5 VA diskettes in _____.
Options: Their protective sleeves,    In a plastic bag,    On a shelf in an upright position,    In the floppy drive

Ans:A ,A


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

Ans:D ,D


If you configure the TCP/IP address and other TCP/IP parameters manually, you can always verify the configuration through which of the following? Select the best answer.
Options: Network Properties dialog box,    Server Services dialog box,    DHCPINFO command-line utility,    Advanced Properties tab of TCP/ IP Info.

Ans:A ,A


Before sending data, a modem sends a request to send signal, or RTS.
Options: True,    False,    ,    

Ans:A ,A


The system study project includes
Options: system analysis,    system design,    implementation,    both (a) and (b)

Ans:D ,D


Suppose you had an incurable computer virus and decided to wipe out all the data and partitions on your hard drive and reformat. What is the order in which you must delete the partitions?
Options: Extended, Logical, Primary,    Primary, Extended, Logical,    Logical, Extended, Primary,    Logical, Primary, Extended

Ans:C ,C


While working with MS-DOS, which command is used to force DOS to recheck all clusters when reformatting a disk?
Options: FORMAT/B,    FORMAT/S,    FORMAT/8,    FORMAT/C

Ans:D ,D


To prevent toner from sticking to a laser printer's heat rollers, apply which of the following:
Options: Alcohol,    Oil,    Ammonia,    Beer or Jack Daniels

Ans:B ,B


A distributed network configuration in which all data/information pass through a central computer is
Options: bus network,    star network,    ring network,    Point-to-point network

Ans:B ,B


Which computer has been designed to be as compact as possible?
Options: Mini,    Super computer,    Micro computer,    Mainframe

Ans:C,(Canswer


Which of the following is true concerning Web services standards?
Options: Led by only one group.,    Helped by cooperation between companies.,    Not necessary at this time.,    Important so that the web can flourish.

Ans:D ,D


In a rule-based system, procedural domain knowledge is in the form of:
Options: production rules,    rule interpreters,    meta-rules,    control rules

Ans:A ,A


The generic two-level data warehouse architecture includes which of the following?
Options: At least one data mart,    Data that can extracted from numerous internal and external sources,    Near real-time updates,    All of the above.

Ans:B ,B

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