Solved question paper for Computer Mar-2018 (PSEB 12th)

Question paper 1

1. PART A

   Objective type quesions:

   1. In C, the program execution starts from?

   (a)The function which is first defined

   (b) main() function

   (c) The function which is last defined 

   (d) The function other than main()

    

   Answer:

   (b) main() function

2. 2. A medium for transferring data between two locations is called

   (a) Network

   (b) Hard disk

   (c) CDROM 

   (d) AII of these

   Answer:

   (a) Network
    

3. 3. What is the meaning of \n ?

   (a) next line

   (b) no line

   c) number line 

   (d) all of these

   Answer:

   (a) Next line

4. State true or false

   4. Transitions are stored in the Video/Audio Transition folder in the timeline view

   Answer:

   False

6. 5. To import several files in Windows Mqvie Maker, we can use click+Ctrl key combination.

   Answer:

   True

7. 6. There is no difference between i-Ticketing and e-Ticketing.

   Answer:

   False

8. PART B

   Write the appropriate word or result for the following:

   7. What is the use of break and continue statement ?

   Answer:

   Use of break :
   ● It terminates the block and gets the control out of switch or loop
   statements.
   ● It can be used with both switch and loop statements.

   Use of continue :
   ● It gets the control to the next iteration of the loop.
   ● It can be used only with loop statements
    

9. 8. C does not support the string data type however strings are handled as an array ?

   Answer:

   Yes. C does not support the string data type that’s why those are handled as an array.

   For example :- char name[] = {‘s’,’h’,’i’,’v’,’a’,’m’} ;

11. 9. Which mechanism is used by a function to pass parameter ?

    Answer:

    Basically, a function can be passed using two mechanisms:-
    -> call by value
    -> call by reference
     

12. 10. Which command is used for dividing an audio/video clip into different clips?

    Answer:

    Split command is used for dividing an audio/video clip into different clips.
     

13. 11. Connections of two or more networks are called ?

    Answer:

    Hybrid Network

14. 12. Which function converts the character type in argument to lower case?

    Answer:

    Function:- .tolower();
     

16. PART C

    Write the appropriate word or result for the following:

    13. What is the difference between putchar() and puts()?

    Answer:

    putchar()	puts()
    ❖ Prints a character to the screen	❖ Prints a string to console
    ❖ It is single character function.	❖ These are string functions.
    ❖ Example :- putchar(a);	❖ Example :- puts(“one”); puts(“two”);
    ❖ It will display a character (‘a’) on the screen	❖ It will display the output “ one ” and “two” in different lines.

     

17. 14. How does a function definition differ from function declaration ?

    Answer:

    Function definition basically consists of a function header and function body.
    It has 4 sections:-
    ● Return type - Function must return a value.
    ● Function name - It must have a name.
    ● Parameter - When a function is invoked, a parameter is passed to the function. It is optional.
    ● Function body - It contains collection of statements that defines what the function does.
    ● Example -: void display(){ printf(“Hello”); }

    Function declaration basically tells the compiler about the function name and how to call the function. It
    has following parts :- return_type function_name( parameters);
    Example :- void display();
    It is generally required when you define function in one source file and call the function in another source file.
     

18. 15. What are the options in Movie tasks pane of Windows Movie Maker?

    Answer:

    The Movie Tasks pane of windows movie maker has some common functions which can be used while making a movie.
    ● Capture Video - It provides options to begin making a movie, such as capturing video and importing existing video, pictures, or audio.
    ● Edit Movie - It provides options for making a movie, such as viewing existing video, pictures, audio, video effects, or adding movie titles and credits.
    ● Auto Movie - It is used to begin making a movie automatically.
    ● Finish Movie - It provides options for saving your final movie, such as to your computer, to send as an attachment in an e-mail message.
    ● Movie Making Tips - It provides help for completing common tasks in Windows Movie Maker.

19. 16. What will happen when you click on the Tasks button below the menu bar ?

    Answer:

    If we click on the task buttons below the menu bar then the background task will be closed.

21. 17. Explain strcpy() function with example.

    Answer:

    strcpy() - It basically copies the contents of one string into another string. Syntax for strcpy() function is :- char* strcpy(char* destination, char* source);
    Generally - strcpy(str1,str2);
    If destination string length is less than source string then whole string will not be copied into destination string.

    Example -:
    #include <stdio.h>
    #include <string.h>
    int main( )
    {
    char first[ ] = "good" ;
    char second[20]= "" ;
    printf ( "\n First string = %s", first ) ;
    printf ( "\n Second string = %s", second ) ;
    strcpy ( second,first ) ;
    printf ( "\n Second string after strcpy( ) = %s", second ) ;
    return 0;
    }

22. PART D

    Write the answers of the following questions:

    18. Define the term communication channel? Explain types also?

    Answer:

    Communication channel refers to the path through which information is transmitted from one place to another. It is also known as communication medium or link. Examples include fiber optic cable, microwave, satellite, etc.
    Types of communication channel:-
    ● Guided media
    ● Unguided media

    First of all, Guided media - In this, the devices are directly linked with each other via cables for transmission of data. It is also called bounded media. The guided media is usually used in LAN.
    Its types include:-
    ➢ Twisted pair cable
    ➢ Coaxial cable
    ➢ Fiber optic cable

    Now, Twisted pair cable - It is most commonly used in today’s world. It is used in LAN for data communication between computers. It is also used in telephones line. It has two types:-
    ● Shielded Twisted Pair Cable
    ● Unshielded Twisted Pair Cable

    Now, Coaxial cable - It carries signals of higher frequency than twisted pair cable. It consists of a single solid copper wire. It can be used for telephones line for voice and data transmission. It is more expensive than twisted pair cable.

    Lastly, Fiber optic cable - It uses light to transmit data unlike electric frequencies. The speed is very high. The data transmission speed is upto billion bits per second. Most of the companies use these cables. It has 3 layers namely sheath, clad and core.

    Now, Unguided media - Data is transmitted through the use of waves. It transmits data signals but does
    not guide them along a specific path. Its types include:-
    ➢ MIcrowave
    ➢ Radiowave

    Now, Microwave - These are high frequency radio waves. Only travel in straight lines. Data transmission speed is upto 150mbps. It is used by telephone companies, cable television providers.
    Now, Radiowave - It is used to communicate over a long distance such as between cities and countries. The speed of data transmission is upto 54mbps.

23. OR

    What is network topology? Explain its types.

    Answer:

    Network topology - It is the schematic representation of a network arrangement, connecting various nodes or sender and receiver through lines of connection.
    There are various types of topologies - Bus, star, ring, mesh, hybrid and tree.
    Bus Topology - It ​is a network type in which every computer and network device is connected to single cable.

    Features:-

    1. It transmits data only in one direction.
    2. Every device is connected to a single cable.

    Advantage:-

    1. It is cost effective.
    2. Easy to expand joining two cables together.

    Disadvantage:- 

    1. Cables fails then whole network fails.
    2. Cable has a limited length.

    Ring Topology - It is called ring topology because it forms a ring as each computer is connected to another computer, with the last one connected to the first.

    Advantage:-

    1. Transmitting network is not affected by high traffic or by adding more nodes, as only nodes having tokens can transmit data.
    2. Cheap to install and expand

    Disadvantage:- 

    1. Troubleshooting is difficult in ring topology.
    2. Adding or deleting the computers disturbs the network activity.

    Star topology - In this type of topology all the computers are connected to a single hub through a cable.
    This hub is the central node and all others nodes are connected to the central node.

    Advantage:-

    1. Fast performance with few nodes and low network traffic.
    2. Hub can be upgraded easily.

    Disadvantage:- 

    1. Cost of installation is high.
    2. Performance is based on the hub that is it depends on its capacity.

    Mesh topology - It is a point-to-point connection to other nodes or devices. All the network nodes are connected to each other.

    Advantages:-  

    1. It is robust.
    2. Provides security and privacy.

    Disadvantages:-  

    1. Installation and configuration is difficult.
    2. Cabling cost is more.

    Tree Topology - It has a root node and all other nodes are connected to it forming a hierarchy. It is also called hierarchical topology. It should at least have three levels to the hierarchy.

    Advantages:-  

    1. Expansion of nodes is possible and easy.
    2. Error detection is easily done.

    Disadvantages:-  

    1. Heavily cabled.
    2. Costly.

    Hybrid Topology - It is two different types of topologies which is a mixture of two or more topologies.

    Advantages:- 

    1. Effective
    2. Flexible

    Disadvantages:-

    1. Complex
    2. Costly
     

24. 19. Explain the various areas of e-governance.

    Answer:

    ​The three main target groups that can be distinguished in governance concepts are government, citizens, and businesses/interest groups. In e-governance, there are no distinct boundaries.

    ● Government to citizen
    The goal of government-to-citizen (G2C) e-governance is to offer a variety of ICT services to citizens in an efficient and economical manner and to strengthen the relationship between government and citizens using technology.

    ● Government to employees
    E-governance to Employee partnership (G2E) Is one of four main primary interactions in the delivery model of E-governance. It is the relationship between online tools, sources, and articles that help employees to maintain the communication with the government and their own companies.
    E-governance relationship with Employees allows new learning technology in one simple place as the computer. Documents can now be stored and shared with other colleagues online. These also include : -
    ★ E-payroll
    ★ E-benefits
    ★ E-training
    ★ Maintaining records of personal information
     

    ● Government to government
    From the start of 1990s e-commerce and e-product, there has rampant integration of e-forms of government process. Governments have now tried to use the efficiencies of their techniques to cut down on waste. E-government is a fairly broad subject matter, but all relate to how the services and
    representation are now delivered and how they are now being implemented.

26. OR

    Describe main uses of Suwidha Centre.

    Answer:

    ● Suwidha Centres are single window system, which provides Government services related to citizens under one roof using information and communication technology.
    ● It was started in 2005 with a vision to provide single point receipt and delivery of various services.
    ● These provide around 35 public services at district and sub district level.
    ● SUWIDHA centres (Single User-Friendly Window Disposal and Helpline for Applicants) are aimed to provide citizens with convenience.
    ● It is a time bound method where citizens get results in a quick and effective manner.
    ● It is one of the very early initiatives of E-Governance that aims at Government to citizen services.
    ● Providing these centres at village level gives the people residing in those areas a greater edge.
    They can now use the services without travelling far.

Question paper 2

1. Part-A  

   1. What is the meaning of in? 
    
   (a)next line 
    
   (b)no line all of these

   Answer:

2. 2. (C) number line In C, the program execution starts from ?  
    
   (a) The function which is first defined  
    
   (b) main() function 
    
   (c) The function which is last defined 
    
   (d) The function other than main() 

   Answer:

3. 3. A medium for transferring data between two locations is called

   (a) Network (b) Hard disk (c) CD ROM (d) All of these 

   Answer:

4. State true or false : 
   4. There is no difference between i-Ticketing and e-Ticketing. 

   Answer:

6. 5. Transitions are stored in the Video/Audio Transition folder in the timeline view.

   Answer:

7. 6. To import several files in Windows Movie Maker, we can use click+Ctrl key combination. 

   Answer:

8. Part-B 
    

   Write the appropriate word or result for the following: 

   7.  Connections of two or more networks are called ?

   Answer:

9. 8. Which function converts the character type in argument to lower case ? 

   Answer:

11. 9. Which command is used for dividing an audio/video clip into different clips

    Answer:

12. 10. Which mechanism is used by a function to pass parameter? 

    Answer:

13. 11. What is the use of break and continue statement 

    Answer:

14. 12.  C does not support the string data type however strings are handled as an array ? 

    Answer:

16. Part-C 

    Write the answers of the following questions: 
    13.. Explain strcpy() function with example. 

    Answer:

17. 14. What will happen when you click on the Tasks button below the menu bar? 

    Answer:

18. 15. What are the options in Movie tasks pane of Windows Movie Maker ? 

    Answer:

19. 16. How does a function definition differ from function declaration ? 17. What is the  
     
    difference between putchar() and puts() ? 

    Answer:

21. 17. What is the difference between getchar() and puts() 

    Answer:

22. 18. Define the term communication channel ? Explain its types also. 
     
                     or 

    Answer:

23. What is network topology ? Explain its types. 

    Answer:

24. 19. Explain the various areas of e-governance. 
     
                     or

    Answer:

26. Describe main uses of Suwidha Centre

    Answer:

Question paper 3

1. Part-A  

   1. Objective type questions: 
    
           1. A medium for transferring data between two locations is called  
    
   (a) Network                    (b) Hard disk  
    
   (c) CD ROM                   (d) All of these

   Answer:

2. 2. What is the meaning of in? 
    
   (a)next line 
   
   (b)no line all of thes

   Answer:

3. 3. (C) number line In C, the program execution starts from ?  
    
   (a) The function which is first defined  
    
   (b) main() function 
    
   (c) The function which is last defined 
    
   (d) The function other than main()

   Answer:

4. 4. To import several files in Windows Movie Maker, we can use click+Ctrl key combination

   Answer:

Read more

6. 5. There is no difference between i-Ticketing and e-Ticketing

   Answer:

7. 6. Transitions are stored in the Video/Audio Transition folder in the timeline view. 

   Answer:

Read more

8. Part-B 

   Write the appropriate word or result for the following: 
   7.  Which mechanism is used by a function to pass parameter ?

   Answer:

Read more

9. 8. Connections of two or more networks are called ?

   Answer:

Read more

11. 9. What is the use of break and continue statement ?

    Answer:

Read more

12. 10. Which function converts the character type in argument to lower case ?

    Answer:

Read more

13. 11. C does not support the string data type however strings are handled as an array ? 

    Answer:

Read more

14. 12.  Which command is used for dividing an audio/video clip into different clips ? 

    Answer:

Read more

16. Part-C 

    Write the answers of the following questions: 
     13.. What are the options in Movie tasks pane of Windows Movie Maker 

    Answer:

Read more

17. 14. Explain strcpy() function with example

    Answer:

Read more

18. 15. How does a function definition differ from function declaration ?  

    Answer:

Read more

19. 16. What is the difference between putchar() and puts() ? 

    Answer:

Read more

21. 17. What will happen when you click on the Tasks button below the menu bar? 

    Answer:

Read more

22. Part-D 

    Write the answers of the following questions : 
    18. Define the term communication channel ? Explain its types also. 

    Answer:

Read more

23. or 
     
    What is network topology ? Explain its types.

    Answer:

Read more

24. 19. Explain the various areas of e-governance. 
     
                     or 

    Answer:

Read more

26. Describe main uses of Suwidha Centre.

    Answer:

Read more