Router operates in which layer of OSI Reference Model?


Options:  Layer 1 (Physical Layer) B.  Layer 3 (Network Layer) C.  Layer 4 (Transport Layer) D.  Layer 7 (Application Layer)

Ans: – B ,






More Computer Networks Related questions:


. Which menu bar selection would you access to openfile?
Options: a. Option b. Help c. View d. None of above

Ans: d, d


. Ctrl + K
Options: Insert Page Humber B. Insert Hyperlink C. Insert Header D. Insert Footer

Ans:– B ,


In a Decision tree
Options: the root is drawn on the left and is the starting point on the decision sequence,    the branch, to be followed, depends on the conditions and decisions, to be made,    the nodes represent the conditions, with the right wise of tree listing the actions to be taken,    All of the above

Ans:D ,D


  What is the maximum zoom percentage in Microsoft PowerPoint? A.  100% B.  200% C.  300% D.  400%
Options:

Ans:– D ,


Time during which a job is processed by the computer is
Options: Delay time,    Real time,    Execution time,    Down time

Ans:C,C


The rectangular boundary around a specific area on the display is called
Options: a window,    a conic section,    a view point,    a view plane

Ans:A ,A


Why is the width of the data bus so important to the processing speed of a computer?
Options: The narrower it is, the greater the computer's processing speed,    The wider it is, the more data that can fit into main memory,    The wider it is, the greater the computer's processing speed,    The wider it is, the slower the computer's processing speed

Ans:C,C


The reserved word enum is used for which of the following?
Options: To define a range for an attribute.,    To define a range for a class.,    To define a range for a relationship.,    All of the above.

Ans:A ,A


What command is used with vi editor to move back to the beginning of a word?
Options: w,    e,    a,    b

Ans:D ,D


For you to create a swap partition by using fdisk, what must the partition's system ID type be?
Options: 83,    82,    5,    4

Ans:B ,B


An up/down counter used in a TI510PC has three inputs. Which of the following is not one of them?
Options: Count up,    Count out,    Reset.,    Count down

Ans:B ,B


. PowerPoint Application allows you to produce
Options: a. Animated Presentations b. Paper Printouts of Slides c. Notes for the Speaker d. All of the above.

Ans:9 – D ,9 – D


How many non-overlapping channels are available with 802.11g?
Options: 3,    12,    23,    40

Ans:A ,A


Hard disks and diskettes are:
Options: Direct access storage devices,    Sequential access storage devices,    Rarely used with microcomputers,    Both (a) and (c)

Ans:A ,A


Programmable controllers:
Options: are programmed using relay ladder logic,    cannot perform functions other than relay logic,    are widely used in many different industries,    (a) and (c) above

Ans:D ,D


What command is used to display the characteristics of a process?
Options: au,    ps,    du,    pid

Ans:B ,B


Brad is in charge of a small network and wants to make it simple but secure. The users want to have full control over their data and still be able to share data with the rest of the office. The networking knowledge of the office staff is excellent. Which network(s) would be the best to set up?
Options: Peer-to-peer,    Master domain,    Server-based,    Ethernet

Ans:A ,A


A 2xx POST error code indicates a problem with:
Options: RAM or ROM,    hard drive,    system board,    second adapter card

Ans:A ,A


What action will correct patchy, faint, uneven or intermittent print on a dot matrix printer?
Options: Replacing the ribbon,    Replacing the timing belt,    Adjusting the paper feed tension,    Adjusting the tractor feed tension

Ans:A ,A


To exit from the Resume Wizard and return to the document window without creating a resume , click the _____ button in any panel in the Resume Wizard dialog box.
Options: a. Cancel b. Back c. Next d. Finish

Ans:– D,– D


In order to arrange the countries from those with the highest population to those with the lowest, you need to sort on the population field in ……………
Options: ascending order B. descending order C. alphabetical order D. random order

Ans:– B ,


A device that converts thermal energy to electrical energy is called a:
Options: thermocouple,    solar cell,    chemical cell,    piezoelectric devices

Ans:A ,A


What is the similarity between a structure, union and enumeration?
Options: All of them let you define new values,    All of them let you define new data types,    All of them let you define new pointers,    All of them let you define new structures

Ans:B ,B


What is the first octet range for a class C IP address?
Options: 192 - 255,    192 - 223,    192 - 226,    128 - 191

Ans:B ,B


A customer has just installed a new cd-rw. the system was working fine before the installation, but now the cdrom does not work, what should you suggest that the customer do?
Options: flash or upgrade the BIOS,    check the CONFIG.SYS,    add cdrw in the device manager,    check the jumper setting on the cd-rw

Ans:D ,D


38. What is the shortcut key to split a table?
Options: a. Ctrl + Alt + Enter b. Ctrl + Shift + Enter c. Alt + Shift + Enter d. Alt + Space + Enter

Ans:–  B ,–  B


Backup and recovery procedures are primarily implemented to
Options: handle the contingency when a file gets corrupted,    to provide data redundancy,    to show different versions of data and programs,    All of the above

Ans:A ,A


.   The best way to insert a new slide in a presentation is to use the
Options: a. Normal view b. Special view c. Slide show view d. Slide sorter view

Ans:4 – D ,4 – D


Which of the following data constraints would be used to specify that the value of cells in a column must be one of a specific set of possible values?
Options: A domain constraint,    A range constraint,    An intrarelation constraint,    An interrelation constraint

Ans:A ,A


The light pen was developed in
Options: 1942,    1976,    1950,    1992

Ans:C ,C


age break is not a Section break
Options: True B. False

Ans:– A ,


The use of specialized workstations:
Options: provides limited growth potentials for 3-D,    reduces the host computer workload and allows more users,    reduces the host computer workload,    has a high cost-performance tradeoff

Ans:B ,B


The general range of speed in revolutions per minute (rpm) at which floppy disks rotate is
Options: 2400-4700,    390-600,    150-250,    300-600

Ans:C ,C


An action assertion must include which of the following?
Options: Anchor object,    Action,    Corresponding object,    All of the above.

Ans:D ,D


Which of the following are the cheapest memory devices in terms of Cost/Bit?
Options: Semiconductor memories B. Magnetic Disks C. Compact Disks D. Magnetic Tapes

Ans:– C ,


A group of magnetic tapes, videos or terminals usually under the control of one master is
Options: Cylinder,    Cluster,    Surface,    Track

Ans:B ,B


Which of the following is the first computer to use Stored Program Concept?
Options: A) UNIVAC B) ENIAC C) EDSAC D) None of above

Ans:-C,-C


What is the alternative name for a diskette?
Options: Floppy disk,    Hard disk,    Flexible disk,    Winchester disk

Ans:A ,A


What should be add before a fraction to avoid entering it as a date?
Options: // B. FR C. Zero D. Zero Space

Ans:– D ,


The application layer of a network
Options: establishes, maintains, and terminates virtual circuits,    defines the user's port into the network,    consists of software being run on the computer connected to the network,    All of the above

Ans:C ,C


. In MS-Word, for what does ruler help?
Options: a. to set tabs b. to set indents c. to change page margins d. All of the above

Ans: –  D , –  D


The CPU chip used in a computer is partially made out of:
Options: Copper,    Iron,    Gold and silver,    Silica

Ans:D,D


The BIOS is the abbreviation of ________.
Options: Basic Input Output System B. Best Input Output System C. Basic Input Output Symbol D. Base Input Output System

Ans:– A ,


The direction of conventional current flow is:
Options: from negative to positive,    from positive to negative,    from left to right,    from neutral to positive

Ans:B ,B


Which of the following statement is correct?
Options: Buffering is the process of temporarily storing the data to allow for small variation in device speeds,    Buffering is a method to reduce cross-talks,    Buffering is a method to reduce the routing overhead,    Buffering is storage of data within the transmitting medium until the receiver is ready to receive

Ans:A ,A


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

Ans:A ,A


Which of the following technique is used for allocating capacity on a satellite channel using fixed-assignment FDM?
Options: Amplitude modulation,    Frequency-division multiple access,    Frequency modulation,    Frequency-shift keying

Ans:B ,B


. Which of the following statement is false?
Options: A) Mechanical analog computers have existed for thousands of years B) There are mechanical analog computers and electronic analog computers. C) All electronic computers are digital computers D) All of above are false

Ans:C,C


The operation of processing each element in the list is known as
Options: a. Sorting b. Merging c. Inserting d. Traversal  

Ans:d,d


In synchronous transmission data from various users
Options: Require header,    Do not require header,    Sometimes require header,    All of the above

Ans:B ,B

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