What is a Firewall in Computer Network?


Options:  The physical boundary of Network B.  An operating System of Computer Network       C.  A system designed to prevent unauthorized access D.  A web browsing Software

Ans:– C ,


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More Computer Networks Related questions:


Which of the following are correct preprocessor directives in C? 1: #ifdef 2: #if 3: #elif 4: #undef
Options: 1, 2,    4,    1, 2, 4,    1, 2, 3, 4

Ans:D ,D


Which symbol will be used with grep command to match the pattern pat at the end of a line?
Options: ^pat,    $pat,    pat$,    pat^

Ans:C ,C


What hole will allocates in “Worst-Fit” algorithm of memory management?
Options: It allocates the smaller hole than required memory hole B. It allocates the smallest hole from the available memory holes C. It allocates the largest hole from the available memory holes D. It allocates the exact same size memory hole

Ans: – C ,


To record a sequence of keystrokes and mouse actions to play back later we use:
Options: Media player B. Sound Recorder C. Calculator D. Macro Recorder

Ans:– D ,


UML is stands for
Options: Universal Modeling Language B. Unified Modeling Language C. United Modeling Language D. Uni Modeling Language

Ans:– B ,


A certain Professor at the Stanford University coined the word 'artificial intelligence' in 1956 at a conference held at Dartmouth college. Can you name the Professor?
Options: David Levy,    John McCarthy,    Joseph Weizenbaum,    Hans Berliner

Ans:B ,B


All inputs must be in ON position to have an output is known as
Options: NOT gate,    AND gate,    OR gate,    XOR gate

Ans:B ,B


. Which of the following file name extension suggests that it is a backup copy of another file?
Options: a. Txt b. Com c. Bas d. Bak

Ans:8 – d ,8 – d


Job Control Language (JCL) statements are Used to
Options: Read the input from the slow-speed card reader to the high-speed magnetic disk,    Specify, to the operating system, the beginning and end of a job in a batch,    Allocate the CPU to a job,    All of the above

Ans:B ,B


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

Ans:D ,D


An important first step in troubleshooting which component in a laser printer is causing a jam is to:
Options: note where in the paper path the paper stops,    check all voltages,    look up error codes,    turn the printer off, then on again

Ans:A ,A


In comparison to the internal (main) memory, tape or disk memory is
Options: slower and more expensive,    slower and less expensive,    faster and more expensive,    faster and less expensive

Ans:B ,B


. What is a Template in Microsoft Word?
Options: A template is a long document which contain several subdocuments B. A template is a structure for a particular type of document C. A template is a list of Styles and Headings D. None of above

Ans:– B ,


. Which file is transferred when computer is start up?
Options: a. Document b. Program files c. Operating system d. System files

Ans:8 – d ,8 – d


. How should you print a selected area of a worksheet, if you’ll want to print a different area next time?
Options: a. On the file menu, point to print area, and then click set print area. b. On the file menu, click print, and then click selection under print what c. On the view menu, click custom views, then click add d. All of above

Ans:– b,– b


In normal view, how can you quickly change to handout master view?
Options: a. Click the outline tab and select handout master view b. Press the shift key and click the handout master view button c. On the view menu, click slide sorter, and click handouts. d. All of above

Ans: – B , – B


Choose the RDBMS which supports full fledged client server application development
Options: a. dBase V b. Oracle 7.1 c. FoxPro 2.1 d. Ingress

Ans:. b,. b


Which one of the following statements is true for the currents in a parallel RC circuit?
Options: The total current is equal to the sum of the currents for the resistance and capacitance,    The current always has the same amplitude and phase for every part of the circuit,    The total current is less than the sum of the currents for the resistance and capacitance,    The total current. is greater than the sum of the currents for the resistance and capacitance

Ans:A ,A


. In Excel, the Fill Color button on the Formatting toolbar is used for what?
Options: a. To insert a background. b. To add borders. c. To select a distribution of figures. d. To add shading or color to a cell range.

Ans:– d,– d


When a host knows its physical address but not its IP address, it can use _____.
Options: RARP,    ARP,    IGMP,    ICMP

Ans:A ,A


Benchmarking is used
Options: to select computer systems,    to maintain files in up-to-data condition,    for application proto-typing,    for system acceptance

Ans:A ,A


A numeric value can be treated as a label value if it precedes with
Options: a. Apostrophe (&lsquo b. Exclamation (!) c. Hash (#) d. Ampersand (&

Ans:#8211; a,#8211; a


In analyzing the compilation of PL/I program, the term "Machine independent optimization" is associated with
Options: recognition of basic syntactic constructs through reductions,    recognition of basic elements and creation of uniform symbols,    creation of more optional matrix,    use of macro processor to produce more optimal assembly code

Ans:C ,C


How much current flows through a 0.02-H choke that is operating from a 12-V ac, 100-Hz source?
Options: 0.02 A,    0.955 A,    10 A,    2.02 A

Ans:B ,B


The logical data structure with a one-to-many relationship is a :
Options: network,    tree,    chain,    relational

Ans:B ,B


The basic difference between broadband and baseband is:
Options: availability,    capacity,    reliability,    transmission

Ans:B ,B


Computer Operators
Options: Write computer programs for specific problems,    Operate the devices which input and output data from the computer,    Normally require a college degree in computer science,    All of the above

Ans:B ,B


A program that converts computer data into some code system other than the normal one is known as
Options: Encoder,    Simulation,    Emulator,    Coding

Ans:A ,A


Which method is used to connect a remote computer?
Options: Device,    Dialup,    Diagnostic,    Logic circuit

Ans:B,(Banswer


hat is the shortcut key to display field codes?
Options: Alt + F9 B. Ctrl + F9 C. Shift + F9 D. Space + F9

Ans:– A ,


. You can install fonts from
Options: a. Add from control program b. Font setup files c. Font .ext files d. All of above

Ans:3 – d ,3 – d


Which of the following is a layer 2 protocol used to maintain a loop-free network?
Options: VTP,    STP,    RIP,    CDP

Ans:B ,B


. The instructions for starting the computer are house on
Options: A) Random access memory B) CD-Rom C) Read only memory chip D) All of above

Ans:7-C,7-C


. Which tool you will use to join some cells and place the content at the middle of joined cell?
Options: a.  From Format Cells dialog box click on Merge Cells check box b.  From Format Cells dialog box select the Centered alignment c.  From Format Cells dialog box choose Merge and Center check box d.  Click on Merge and Center tool on formatting toolbar

Ans:– d,– d


A key verifier machine is used In controlling
Options: transaction entry,    data communication,    computer processing,    transaction origination

Ans:A ,A


Which 32-bit microprocessor is used in IBM's PS/2 model-80 computer?
Options: 8088,    80286,    80386,    80486

Ans:C ,C


Which file is used to configure which filesystems are mounted?
Options: /etc/mount.sys,    /etc/filesys,    /etc/sysconfig,    /etc/fstab

Ans:D ,D


A Ring, refers to a record chain, the last of which refers to the first record, in the chain, is called a/an
Options: addressing,    location,    pointer,    loop

Ans:C ,C


. What is the shortcut key to hide entire column?
Options: CTRL + − B. CTRL + 0             C. CTRL + H D. CTRL + C

Ans:– B ,


Which of the following commands displays the configurable parameters and statistics of all interfaces on a router?
Options: show running-config,    show startup-config,    show interfaces,    show versions

Ans:C ,C


Fifth generation computers are likely to exhibit
Options: artificial intelligence,    heuristic behaviour,    advanced parallel processing,    All of the above

Ans:D ,D


What will be the output of the program (sample.c) given below if it is executed from the command line? cmd> sample monday tuesday wednesday thursday /* sample.c */ #include<stdio.h> int main(int argc, char *argv[]) { while(--argc>0) printf("%s", *++argv); return 0; }
Options: sample monday tuesday wednesday thursday,    monday tuesday wednesday thursday,    monday tuesday thursday,    tuesday

Ans:B ,B


Which of the following commands can be used to get information about all users who are currently logged into the system?
Options: which,    who,    who am i,    1 /u

Ans:B ,B


In a 1:N relationship, the foreign key is placed in:
Options: either table without specifying parent and child tables.,    the parent table.,    the child table.,    either the parent table or the child table.

Ans:C ,C


The Banker’s algorithm is used
Options:  to rectify deadlock B.  to detect deadlock         C.  to prevent deadlock D.  to slove deadlock

Ans:– C ,


1 Microfarad is the same as:
Options: 1 millionth of a picofarad,    1000 millifarads,    1 million picofarads,    1 million farads

Ans:C ,C


Which of the following Indian companies designs and manufactures super- computers?
Options: C-DOT,    C-DAC,    CMC,    All of the above

Ans:B ,B


DEC advertises that it helped to create "the world's first expert system routinely used in an industrial environment," called XCON or:
Options: PDP-11,    Rl,    VAX,    MAGNOM

Ans:B ,B


. Which file system Windows 95 typically use?
Options: a. FAT 16 b. FAT 32 c. NTFS d. LMFS

Ans:7 – b ,7 – b


Point out the error in the following program. #include<stdio.h> #include<stdarg.h> void varfun(int n, ...); int main() { varfun(3, 7, -11, 0); return 0; } void varfun(int n, ...) { va_list ptr; int num; num = va_arg(ptr, int); printf("%d", num); }
Options: Error: ptr has to be set at begining ,    Error: ptr must be type of va_list,    Error: invalid access to list member,    No error

Ans:A ,A

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