DG Khan Board 2017
Computer Science
(Inter part2)
Note: Pour possible answers A, B; C and D to each question are given. The choice which you think is correct that circle in front that question with Marker or Pen ink. 'Lining or filling two or more circles 'will result in zero mat k in that question. Write the letter A, B. (7 or D in the column.(write correct "option) against each question also. If there k a contradiction in the bubble and hand written answer, bubble option will be considered correct.

• Which of the following may be a temporary file?

(a) Master File
(b) Data File
(c) Transaction File
(d) Program File

• Which of the following is also known as control key?

(a) sort key
(b) composite key
(c) primary key
(d) foreign key

• In an E-R Diagram, a diamond represents a(n):

(a) sample database
(b) wizard
(c) common standards
(d) easier programming

• Which object is the output of a database application?

(a) Form
(b) Query
(c) Table
(d) Report

• What is the default field size of a Text data-type In MS-Access.

(a) 2
(b) 5
(c) 20
(d) 50

• Which shortcut key is used to open an existing database in MS. Access.

(a) CTRI±N
(b) CTRL + S
(c) CTRL + 0
(d) CTRL + Z

C-LANGUAGE

• The statement written by programmer is called:

(a) Source code
(6) exe code
(c) Syntax
(d) Object code

• A type of operator that works with one operand is called:

(a) Binary operator
(b) Unary operator
(c) Ternary operator
(d) Relational operator

• Function which used to get input from the user:

(a) printf ()
(b) cIrscr( )
(c) scanf( )
(d) puts( )

• An expression that uses a relational operator Is known as:

(a) Serial Expression
(b) Arithmetic Expression
(c) Relational Expression
(d) Sequential Expression

• Which is the simplest selection structure?

(a) if
(b) switch
(c) if-else
(d) Nested-if

• One execution of a loop is known as a(n)

(a) Test
(b) Iteration
(c) Duration
(d) Integer

• This means to increase a value by one:

(a) Modulus
(b) Decrement
(c) Inc
(d) Increment

• Function declaration is also known as function----------

(a) Definition
(b) Header
(c) Prototype
(d) Parameters

• A sequence of characters from an input device to computer is called:

(a) Input stream
(b) Text stream
(c) Binary stream
(d) Out put

SUBJECTIVE PART
(Section-II)
C-Language

2. Write short answers to any SIX (6) questions.

• Describe the term information.
  
• List any two objectives of DBMS.
  
• What are views?
  
• Write names of two relationships types.
  
• Define Entity Integrity.
  
• How second normal form is achieved?
  
• What is meant by sample databases?
  
• Differentiate between degree and cardinality of a relation.
  
• What do you know about columnar form.

Q 3. Write short answers to any EIGHT (8) questions.

• Write assembly language definition
  
• What are preprocessor directive?
  
• Define Bug.
  
• Define variable declaration.
  
• What is character constant.
  
• Find the error:
  Void main ( )
  {
  Int b = 5 ;
  Print f ( "%d" , b)
  }
  
• Define escape sequence.
  
• Write the output float f = 3.14159;
  print f( "%7.3 f” , f);
  ix. Find the error void main( )
  {
  Int a = 10;
  Print f("%s",b);
  }

Q 4. Write short answers to any SIX (6) questions.

• How does a selection structure select a statement to execute?
  
• Find output:
  int x=.1 ;
  int y=2 ;
  int z=3 ;
  if (( x==y) II (y==z) II (z==2))
  print f("Yes");
  else
  print f("NO");
  
• iii. Find errors:
  # Include (Stdio.n)
  # include < conio.c>
  Void main ( )
  {
  lf(16>10) then
  Print f (“ % C", " Pakistan" );
  getch ( );
  }
  
• Write two uses or advantages of loop.
  
• List any four benefits of using functions.
  
• Compare local and global variable.
  
• Define text steam.
  
• Show output:
  int i, 1; i<=5 ;,I, j);
  }
  
• Convert the following loop code into Do-While loop code
  int n = 1
  while (n < =10)
  {
  Printf(" *\ n" );
  N++;
  }

SECTION-III

Q.5 What is key? Explain different types of keys
Q.6 What is query? Explain different types of query.

C-Language

Note: Attempt any two questions:

Q.7 Define language processors. Explain different types of language processors.
Q.8 Write a program that inputs a number and finds whether it is even or odd.
Q.9 Define Do.....WHILE loop in VB. Write its syntax. Explain its working with example.