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 ,

More Computer Networks Related questions:

Which of the following is the correct usage of conditional operators used in C?
Options: a>b ? c=30 : c=40;,    a>b ? c=30;,    max = a>b ? a>c?a:c:b>c?b:c,    return (a>b)?(a:b)

Ans:C ,C

The manager attempts to expedite, or speed up, the flow of
Options: machines,    manpower,    material,    All of the above

Ans:C ,C

A small film-plate which is used for microfilming the output from a microcomputer screen is called
Options: microfilm,    microfiche,    film card,    COM

Ans:B ,B

A hard copy would be prepared on a
Options: Line printer,    Dot matrix printer,    Type writer terminal,    Plotter

Ans:E ,E

8.Entity-relation model is
Options: (A)It describes the basic entities in the design and relation between them. (B) Observational techniques used to understand social and organizational requirements. (C) It is based on the idea of developing an initial implementation, exposing it uses on requirement and refining it through many versions until an adequate system has been developed. (D) Based on an idea of developing an initial implementation, exposing this to uses comment and retiring it until and adequate system has been developed. 14

Ans:148. (A),148. (A)

Bit map terminal
Options: support displays containing multiple windows,    requires considerable amount of video RAM,    requires tremendous amount of copying and hence low performance,    All of the above


Which of the following' is NOT a characteristic of good test data?
Options: should be comprehensive,    users do not participate at this preliminary stage,    every statement should be executed,    expected output from the module's execution should be determined manually

Ans:B ,B

System maintenance:
Options: is usually not necessary,    is necessary on all systems, regardless of how good,    is not required if the system is well written,    always requires several programs

Ans:B ,B

A technique used by codes to convert an analog signal into a digital bit stream is known as
Options: Pulse code modulation,    Pulse stretcher,    Query processing,    Queue management


Tulsidas, the author of Ramcharitmanas, was a contemporary of which of the following rulers?
Options: Akbar,    Humayun,    Shahjahan,    Sher Shah Suri


When was Mandela inaugurated as first black President?
Options: 1994,    1999,    2000,    None of the above


B. C. Roy Award is given in the field of
Options: Music,    Journalism,    Medicine,    Environment


81. Which of the following option is not available in Insert >> Picture ?
Options: a. Chart b. Word Art c. Clip Art d. Graph

Ans:– D ,– D

To be successful in implementing DSS, organizations should have the following characteristics except:
Options: a well-controlled data-processing system,    willingness to commit dollars and personnel to the project.,    education and training by the organization,    powerful central computer groups to initiate and manage system projects

Ans:D ,D

Visual clues that are helpful in computer vision include:
Options: colour and motion,    depth and texture,    height and weight,    a and b above

Ans:D ,D

Which command is used with vi editor to search a pattern in the forward direction?
Options: /,    ?,    //,    ??

Ans:A ,A

What is the population density of Manipur?
Options: 107/sq. km,    207/sq. km,    307/sq. km,    407/sq. km


Presently known as the European Union, the EEC was established in
Options: 1957,    1958,    1959,    1960


A logic gate is an electronic circuit which
Options: makes logic decisions,    allows electron flow only in one direction,    works on binary algebra,    alternates between 0 and 1 values

Ans:A ,A

A PCMCIA measuring 10.5mm is what type?
Options: type 1,    type 2,    type 1 and 3,    type 3

Ans:D ,D

The highest level in the hierarchy of data organization is called
Options: data bank,    database,    data file,    data record

Ans:B ,B

Automation means:
Options: assisting or replacing humans with machines.,    workers controlling machines.,    increased productivity.,    All of the above

Ans:D ,D

6.COUNT command is used to
Options: (A)Count the number of data fields in an active database file (B) Count the number of data files which are active (C) Count the records which are updated (D) Count the number of records in an active database file 2

Ans:26. (D),26. (D)

This statesman, politican, scholar, inventor, and one of early presidents of USA invented the swivel chair, the spherical sundial, the moldboard plow, and the cipher wheel.
Options: George Washington,    Alexander Hamilton,    John Adams,    Thomas Jefferson


Producer consumer problem can be solved using
Options: semaphores,    event counters,    monitors,    all of the above

Ans:D ,D

3.Which one is not true for risk analysis ?
Options: (A)It estimate risks (B) It removes risks (C) It reduces risks (D) It develops risks 5

Ans:53. (D),53. (D)

149. sikh itihaas mein langar pratha kisane shuroo kee ?
Options: NA

Ans: guru angad dev , guru angad dev

Which of the following refers to the terms "residual error rate"?
Options: the number of bit errors per twenty four hours of continuous operation on an asynchronous line,    The probability that one or more errors will be undetected when an error detection scheme is used,    the probability that one or more errors will be detected when an error detection mechanism is used,    signal to noise ratio divided by the ratio of energy per bit to noise per hertz

Ans:B ,B

7.Memory table is used
Options: (A)To allocate main memory to processes (B) To allocate secondary memory to processes (C) To manage virtual memory (D) A, B and C are true.

Ans:7. (D),7. (D)

3.In Excel using the AutoSum button will replace in the selected cell
Options: (A)the sum of values in the cell’s column (B) nothing until you select a range of cells (C) the sum of the cell’s row unless you change the range (D) a formula which will add values in the range Excel guesses you want to add 12

Ans:123. (D),123. (D)

1. Which statement is valid about “TIME” command?
Options: a. Time command is used to display and allow changes to the system time b. Time format can be changed by changing in country setting in config.sys file c. MS DOS displays the time in 12-hour or 24-hour format d. All of above

Ans:Correct Answer: d ,Correct Answer: d

423. "haidrojan bamb" kis siddhaant par aadhaarit hai?
Options: NA

Ans: naabhikeey sanlayan, naabhikeey sanlayan

To produce high quality graphics (hardcopy) in color, you would want to use a/n
Options: A) RGB monitor B) Plotter C) Ink-jet printer D) Laser printer


5.In Microsoft PowerPoint the following provides a printed copy of your presentation
Options: (A)Outlines (B) Speaker notes (C) Audience handouts (D) All of above 13

Ans:135. (C),135. (C)

Which command of DOS is used to compare two floppy disks?

Ans:B ,B

If you have a PowerPoint show you created and want to send using email to another teacher you can add the show to your email message as a (an)
Options: a. Inclusion b. Attachment c. Reply d. Forward

Ans: – B , – B

4.By principle of locality, cache memory
Options: (A)Increases average memory access time. (B) Reduces average memory access time (C) Does not affect the average memory access time (D) None of these 16

Ans:164. (B),164. (B)

The winter Olympics came into being in
Options: 1912,    1924,    1920,    1916


Which of the following items would require you to comply with EPA disposal guidelines?
Options: Keyboard,    System board,    Power supply,    Battery

Ans:D ,D

6.n(log n) is referred to
Options: (A)A measure of the desired maximal complexity of data mining algorithms (B) A database containing volatile data used for the daily operation of an organization (C) Relational database management system (D) None of these 7

Ans:76. (A),76. (A)

Kalinga Award was instituted by
Options: UNESCO for exceptional contribution of efforts to popularise science,    Indian Military.,    Jnanpith, a cultural literacy society for encouraging creative writing in modern languages,    Indian Adult Education Association for outstanding contribution of adult literacy in India


. Which of the following is a class of computers based on model?
Options: A) Digital Computer B) Hybrid Computers C) Analog Computers D) AT Computers


5.In a disk system time required for a read/ write head to move to the track where the record to be read or written is stored is
Options: (A)Access time (B) Random time (C) Response time (D)Seek time 9

Ans:95. (D),95. (D)

33. The spike
Options: a. Allows you to combine text from several documents and tehn insert all the text into one document at onwe time b. Allows you to edit auto text entries c. Allows you to format uto text entries d. All of above

Ans:– A ,– A

2.Following is true for the digital computer
Options: (A)Information is in form of a string of binary digits (B) It can be used as analog processor (C) It is less accurate than the analog computer (D) None of these. 12

Ans:122. (A),122. (A)

Communication ports are found on the back of microcomputers. They are used to connect the computer to _____
Options: printers,    modems,    other hardware,    All of the above


. Which of the following is not an underline option in the format cells dialog box?
Options: a. Double b. Single Accounting c. Double Accounting d. Single Engineering

Ans:– d,– d

'OS' computer abbreviation usually means ?
Options: Order of Significance,    Open Software,    Operating System,    Optical Sensor


The longest river in the Common wealth of independent states is the
Options: Irtysh river,    Ob river,    Yenisei river,    Volga river


Ctrl + J
Options: a. Align Justify b. Insert Hyperlink c. Search d. Print

Ans:–  A,–  A