Which of following provides reliable communication?


Options: TCP B. IP C. UDP D. All of the above

Ans:– A ,


Description: mcqquestions






More Computer Networks Related questions:


. 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


. What type of controls are text boxes when data from the recordset is visible?
Options: a. Align b. Bound c. Calculated d. Unbound

Ans:3 – b ,3 – b


The cp command uses:
Options: standard input file,    standard output file,    both input and output file,    neither standard input nor standard output file

Ans:D ,D


Point out the error in the program (in Turbo-C). #include<stdio.h> #define MAX 128 int main() { const int max=128; char array[max]; char string[MAX]; array[0] = string[0] = 'A'; printf("%c %c\n", array[0], string[0]); return 0; }
Options: Error: unknown max in declaration/Constant expression required,    Error: invalid array string,    None of above,    No error. It prints A A

Ans:A ,A


Data collection terminals gather data for use by the
Options: inventory subsystem,    cost subsystem,    production subsystem,    All of the above

Ans:D ,D


The blocking factor is:
Options: a group of fields stored in adjacent memory.,    the number of physical records per page.,    attributes grouped together by the same primary key.,    attributes grouped together by the same secondary key.

Ans:B ,B


The command interpreter
Options: is usually the primary user interface,    requires fixed format commands,    is menu drive,    is quite different from the SCL interpreter

Ans:A ,A


Which of the following types of databases are the most common?
Options: Personal,    Workgroup,    Department,    Enterprise

Ans:C ,C


In SQL, which command(s) is(are) used to change a table's storage characteristics?
Options: ALTER TABLE,    MODIFY TABLE,    CHANGE TABLE,    All of the above

Ans:A ,A


Locking may cause which of the following problems?
Options: Erroneous updates,    Deadlock,    Versioning,    All of the above.

Ans:B ,B


Who proposed the relational model?
Options: Bill Gates B. E.F. Codd C. Herman Hollerith D. Charles Babbage

Ans:– B ,


For a type 1 system, the steady-state:
Options: error for a step input is always zero,    error for a velocity input is always zero,    input for acceleration input is always non-zero,    (a) and (c)

Ans:D ,D


. BIOS is used by
Options: a. Operating system b. Compiler c. Interpreter d. Application software

Ans:8 – a ,8 – a


Which is not application software?
Options: a. Windows NT b. Page Maker c. WinWord XP d. Photoshop

Ans:a,a


Your IDE hard drive is not spinning up when you turn on the PC. What is the most likely problem.
Options: bad data cable,    incorrect jumper setting on drive,    loose molex connector,    virus

Ans:C ,C


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

Ans:B ,B


In the graphical model of linear programming the region defined by the constraints and the non-negative restrictions is the:
Options: non-negativity restrictions,    objective function,    feasible solution region,    constraints

Ans:C ,C


Changes made periodically to a system, after its implementation, is known as system
Options: analysis,    design,    development,    maintenance

Ans:D ,D


What will be the output of the program ? #include<stdio.h> int main() { void fun(int, int[]); int arr[] = {1, 2, 3, 4}; int i; fun(4, arr); for(i=0; i<4; i++) printf("%d,", arr[i]); return 0; } void fun(int n, int arr[]) { int *p=0; int i=0; while(i++ < n) p = &arr[i]; *p=0; }
Options: 2, 3, 4, 5,    1, 2, 3, 4,    0, 1, 2, 3,    3, 2, 1 0

Ans:B ,B


Which type of entity has its relationship to another entity determined by an attribute in that other entity called a discriminator?
Options: Supertype entity,    Subtype entity,    Archetype entity,    Instance entity

Ans:B ,B


Which of the following commands sets the secret password to Cisco?
Options: enable secret password Cisco,    enable secret cisco,    enable secret Cisco,    enable password Cisco

Ans:C ,C


Back-up procedure helps in
Options: restoring the operation whenever there is a disk failure,    restoring both application and system software whenever there is disk corruption.,    restoring the data files whenever there is a system crash,    All of the above

Ans:D ,D


What router command allows you to determine whether an IP access list is enabled on a particular interface?
Options: show ip port,    show access-lists,    show ip interface,    show access-lists interface

Ans:C ,C


A form of code that uses more than one process and processor, possibly of different type, and that may on occasions have more than one process or processor active at the same time, is known as
Options: multiprogramming,    multi threading,    broadcasting,    time sharing

Ans:B ,B


On a systems flowchart, the online manual keeping of input data is identified by using the
Options: online storage symbol,    Online keyboard symbol,    keeping operation symbols,    manual operation symbols

Ans:B ,B


. A new presentation can be created from
Options: a.  Blank Presentation b.  From Existing Presentation c.  From Design Template d.  All of above

Ans:8 – D ,8 – D


Data dictionary contains detail of
Options: data structures,    data flows,    data stores,    All of the above

Ans:D ,D


If you delete the contents of NVRAM and reboot the router, what mode will you be in?
Options: Privileged mode,    Global mode,    Setup mode,    NVRAM loaded mode

Ans:C ,C


Semaphores
Options: synchronize critical resources to prevent deadlock,    synchronize critical resources to prevent contention,    are used to do I/O,    are used for memory management

Ans:A ,A


Which part of the computer were is used for calculating and comparing?
Options: Disk unit,    Control unit,    ALU,    Modem

Ans:C,C


The ALU of a computer responds to the commands coming from
Options: primary memory,    control section,    external memory,    cache memory

Ans:B ,B


HIMEM.SYS controls:
Options: DOS=HIGH,    RMDRIVE.SYS,    SMARTDRV.SYS,    Extended Memory

Ans:D ,D


The transmission signal coding method of TI carrier is called
Options: Bipolar,    NRZ,    Manchester,    Binary

Ans:A ,A


Pictographs, called _____ help systems to be more user friendly.
Options: people,    icons,    information system,    on-line

Ans:B ,B


. Which operating system can you give smallest file name?
Options: a. Ps/2 b. Dos c. Windows d. Windows NT

Ans: b, b


How many addresses are required for 25 x 40 video RAM?
Options: 2000,    1920,    1000,    2000

Ans:C ,C


The digital computer was developed primarily in
Options: A) USSR B) Japan C) USA D) UK

Ans:-C,-C


During preventative maintenance on a dot matrix printer, do NOT lubricate:
Options: Platen assembly,    Print head pulley,    Print head pins,    Paper advance gear bushings

Ans:C ,C


Error reports are an example of:
Options: scheduled reports,    demand reports,    exception reports,    predictive reports

Ans:C ,C


. A character that represents one or more unknown character is
Options: a. Wildcard character b. All file name c. Extensions d. None of above

Ans:1 – a ,1 – a


A system has two IDE hard drives that are each divided into primary and extended partitions, which drive letter is assigned to the primary partition of the second drive?
Options: C,    D,    E,    F

Ans:B ,B


The computer can potentially be used to monitor most of our actions, thus robbing us of _____
Options: tapping,    privacy,    back log,    security

Ans:B ,B


One solution to the multivalued dependency constraint problem is to:
Options: split the relation into two relations, each with a single theme.,    change the theme.,    create a new theme.,    add a composite key.

Ans:A ,A


A top-to-bottom relationship among the items in a database is established by a
Options: Hierarchical schema,    Network schema,    Relational schema,    All of the above

Ans:A ,A


.   Which of the following is not a transition effect?
Options: a. Blinks diagonal b. Dissolve c. Fade through black d. Blinds vertical

Ans:0 – A ,0 – A


. MSI stands for

Options: A) Medium Scale Integrated Circuits B) Medium System Integrated Circuits C) Medium Scale Intelligent Circuit D) Medium System Intelligent Circuit

Ans:A,A


Which of the following subdirectory(ies) contains the device files?
Options: /dev,    /bin,    /etc,    /home

Ans:A ,A


Finding the location of the element with a given value is:
Options: a. Traversal b. Search c. Sort d. None of above  

Ans:b,b


Which is a permanent database in the general model of compiler?
Options: Literal Table,    Identifier Table,    Terminal Table,    Source code

Ans:C ,C


In a pure inductor:
Options: ac current leads the voltage by 90 degree,    ac current and voltage are exactly in phase,    ac current lags the voltage by 90 degree,    ac current is converted to dc voltage

Ans:C ,C

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