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Computer Guess Papers 2021 Class 12
12th Class Menu

Computer is one of the greatest inventions of technology which is of great importance. Now, the computer has become the part of almost every field. Computer is the important subject which is taught at different levels of studies. Computer is most interesting and technical subject. Computer is taught to 12th class too. For the better practice of students, 2nd year computer science guess paper 2021 is given here. These 12th class computer guess papers are just like a gift for 2nd year students.

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2nd Year Computer Science Guess Papers 2021

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ACCELERATED LEARNING PROGRAMME (ALP)

LAHORE, SAHIWAL, GUJRANWALA, FAISALABAD, MULTAN, BHAWALPUR,RAWALPINDI , DERA GHAZI KHAN, AZAD KAHSMIR , SARGODHA

                                     

12th CLASS COMPUTER SCIENCE  GUESS PAPERS

 

CHAPTER NO.1      DATA BASIC

MULTIPLE CHOICE:

  1. Which of the following represents a collection of concepts that are used to describe the structure to describe the structure of a data base?
  1. Data warehouse
  2. Data model
  3. Data structure
  4. Data type
  1. Which of the following data model is more flexible?
  1. Network data model
  2. Hierarchical data model
  3. Relational data model
  4. Object data model
  1. Which of the following type of file require largest processing time?
  1. Sequential file
  2. Random file
  3. Indexed sequential file
  4. Direct access file
  1. Which of the following may be a temporary file?
  1. Master file
  2. Transaction file
  3. Backupt file
  4. None of these
  1. SQL is a(n)                                       
  1. Unstructured language
  2. Structured language
  3. Object oriented language
  4. Software

SHORT QUESTIONS:

  • What do you mean by Data Integrity?
  • State the use of query language.
  • What is data dictionary?
  • State the use of Index in FMS.
  • Describe term information?
  • What is the purpose of backup and recovery?
  • Difference between database and database management system.

LONG QUESTIONS:

  • Briefly describe the four advantages and four disadvantages of database management system.
  • Define database system. Explain any three components of database system.

CHAPTER NO.2    BASIC CONCEPTS AND TERMINOLOGY OF DATABASE.

MULTIPLE CHOICE:

  1. A relation is also known as.
  1. Table
  2. Tuple
  3. Relationship
  4. Field
  1. A table must have
  1. Primary key
  2. Secondary key
  3. Composite key
  4. Sort key
  1. The columns of a relation correspond to.
  1. Table
  2. Record
  3. Field
  4. Cell
  1. SQL is used for
  1. Data definition
  2. Data manipulation
  3. Data definition and manipulation
  4. Searching records
  1. Insert command is used to insert.
  1. A new table
  2. A new record
  3. A view
  4. Dependencies
  1. The foreign key is found in.
  1. Parent table
  2. Dependant table
  3. Pivot table
  4. Index table
  1. A table must have
  1. Primary key
  2. Secondary key
  3. Composite key
  4. Sort key

SHORT QUESTIONS:

  • Who is Data Administrator?
  • Define entity.
  • What is the basic purpose of using view?
  • How the table/relations are formed up in DBMS?
  • How the record and file are constructed in traditional File management system.
  • Discuss the data manipulation in DBMS system.
  • Write down the properties of relations in details.

LONG QUESTIONS:

NO LONG QUESTIONS:

CHAPTER NO. 3                  DATA BASE DESIGN PROCESS

MULTIPLE CHOICE:

  1. An entity related to itself in an ERD model refers to.
  1. Recursive relationship
  2. On-to-many
  3. Many-to –many
  4. One –to-one
  1. An attribute is also known as a.
  1. Relation
  2. Table
  3. Row
  4. Field
  1. Which of the following is used to associate entitles with one another.
  1. Entity
  2. Attribute
  3. Identifier
  4. Relationship
  1. In an E – R diagram, a rectangle represent(n):
  1. Attribute
  2. Entity
  3. Relationship
  4. Field
  1. Which of following is used to define objects and describe their characteristics.
  1. Attribute
  2. Relationship
  3. Both a and b
  4. None
  1. The degree of relation refers to the number of.
  1. Rows
  2. Table
  3. Data
  4. Columns
  1. All the hardware costs are considered during.
  1. Project planning
  2. Requirement analysis
  3. Feasibility study
  4. Data analysis
  1. In an E-R Diagram, a diamond represents a.
  1. Entity
  2. Attribute
  3. Relationship
  4. Easier programing
  1. Customers, cars are examples of.
  1. Entities
  2. Attributes
  3. Cardinals
  4. Relationships
  1. Which of the following keys does not hold uniqueness property.
  1. Candidate key
  2. Foreign key
  3. Primary key
  4. Secondary key
  1. Database development process involve mapping of conceptual data model into.
  1. Object oriented data model
  2. Network data model
  3. Implementation model
  4. Hierarchical data model
  1. In ERD model the relationship between two entities is represented by a.
  1. Diamond symbol
  2. Rectangualr box
  3. Oval symbol
  4. Line
  1. In hybrid distribution which kind of fragments are stored at only one site.
  1. Critical fragments
  2. Nnn critical fragments
  3. Critical and non –critical fragments
  4. Only large fragments

SHORT QUESTIONS:

  • What is project planning?
  • What are Relationships?
  • What is Analysis in Database?
  • Define Cardinality.
  • State the purpose of feasibility study?

LONG QUESTIONS:

  • What is data modeling? What are ingredients of data modeling?
  • What is ER model? What are symbols used in ER diagram? 
  • Explain different types of relationships with details. 

CHAPTER NO.4          DATA INTEGRITY AND NORMALIZATION.

MULTIPLE CHOICE:

  1. In 3NF, which form of dependency is removed?
  1. Functional
  2. Non-functional
  3. Associative
  4. Transitive
  1. Every relation must have.
  1. Primary key
  2. Candidate key
  3. Secondary key
  4. Mutually exclusive
  1. In 2NF, which form of dependency is removed?
  1. Functional
  2. Partial
  3. Associative
  4. Transitive
  1. In 3 NF (Third Normal Form), a non- key attribute must not depend one.
  1. Non –key attributes
  2. Key attributes
  3. Composite key
  4. Sort key
  1. In relational database, a table is also called a.
  1. Tuple
  2. Relation
  3. File
  4. Schem
  1. Different attributes in two different tables having same name are referred to a.
  1. Synonym
  2. Homonym
  3. Acronym
  4. Mutually exclusive
  1. Every relation must have a
  1. Primary key
  2. Candidate key
  3. Secondary key
  4. Composite key

SHORT QUESTIONS:

  • What are database anomalies? Only list their names.
  • Define 3rd Normal form. OR When is a relation in 2NF?
  • What is a functional dependency?
  • Define transitive dependency?
  • How second normal form is achieved?
  • Define entity integrity?

LONG QUESTIONS:

NO LONG QUESTIONS

CHAPTER NO.5          INTRODUCTION TO MICROSOFT ACCESS.

MULTIPLE CHOICE:

  1. Which of the following is not a database object?
  1. Table
  2. Query
  3. Form
  4. MS.Word
  1. A database consists of various components called.
  1. Tools
  2. Properties
  3. Entities
  4. Objects
  1. Which of the following object of database in used to retrieve data from database?
  1. Queries
  2. Forms
  3. Reports
  4. Table.
  1. The output of query is in the form of a.
  1. Table
  2. Form
  3. Report
  4. Query
  1. Which of the following object is used to retrieve data from database and present in a formatted way?
  1. Report
  2. Form
  3. Table
  4. Query
  1. Microsoft access saves the database with the extension.
  1. .mdb
  2. .msdb
  3. .madb
  4. None
  1. What is the default field size of a Text data-type in MS- Access?
  1. 2
  2. 5
  3. 20
  4. 50
  1. Which shortcut key is used to open an existing database in MS. Access?
  1. CTRL+N
  2. CTRL+S
  3. CTRL+O
  4. CTRL+Z
  1. The smallest meaningful unit of data in a database is called.
  1. Byte
  2. Bit
  3. Character
  4. Field
  1. A record is a complete set of……………….. Field.
  1. Distinct
  2. Related
  3. Designed
  4. All of them
  1. In Access, the structure of a table is created in……… view.
  1. Design view
  2. Datasheet view
  3. A and b both
  4. None of them

SHORT QUESTIONS:

  • List different button available on access database window.
  • Define IDE.
  • Write down two database objects in MS. Access.
  • What is Data Base Wizard?
  • Define term RDBMS?

LONG QUESTIONS:

NO LONG QUESTIONS CHAPTER NO.5

CHAPTER NO.6              TABLES AND QUERIES

MULTIPLE CHOICE:

  1. The graphical query tool is known as.                                             
  1. Query tool
  2. Design grid
  3. Query form
  4. Design form
  1. The output of a query is in the form of a.                                        
  1. Table
  2. Form
  3. Report
  4. Query
  1. Find and replace command is found in.
  1. Edit menu
  2. File menu
  3. Tool
  4. View menu
  1. ____________ Table views are available in MS. Access.
  1. 4
  2. 3
  3. 2
  4. 1
  1. The data in table is entered in.
  1. Design view
  2. Normal view
  3. Data sheet view
  4. Layout view
  1. What symbol indicates that you are editing a record?
  1. Pencil
  2. Black arrow
  3. Key
  4. Asterisk
  1. It makes very simple ot create a database.
  1. Sample database
  2. Wizard
  3. Common standard
  4. Easier programming
  1. Which object is the output of a database application?
  1. Form
  2. Query
  3. Table
  4. Report
  1. Which view is used to add, edit or delete record from table?
  1. Record view
  2. Datasheet view
  3. Design view
  4. Edit view
  1. Storage and retrieval of data is related to.
  1. Data capturing
  2. Data manipulation
  3. Managing output result
  4. Analysis
  1. How find four character name that starts with H, the criteria is specified as.
  1. H* a
  2. H?  4
  3. H???
  4. H##

SHORT QUESTIONS:

  • Define the term cardinality of relation.
  • Define the term table in database.
  • What is field?
  • How does a database differ from a table?
  • What is the use of wild cards?
  • Primary key
  • What is the use of data sheet views in MS Access?
  • Cardinality of relation
  • Degree of relation
  • Write down two table vies available in Access.

LONG QUESTIONS:

  • Explain 8 different data types available in MS. Access.
  • What is filter? Explain its two types available in MS. Access.
  • Define query. Explain the uses of wildcards in queries with examples.
  • Discuss different methods of modifying a table.
  • What is field property? discuss different field properties in details 
  • What is filter? Discuss different types of filters in MS Access

CHAPTER NO. 7             FORMS AND REPORTS.

MULTIPLE CHOICE:

NIL

SHORT QUESTIONS:

  • Write the uses of Reports.
  • Name two layouts of forms in MS. Access.
  • Why is report generator used to database systems?
  • List two advantages of report.
  • Sub form
  • Uses of columnar forms
  • Purpose of control naming convention
  • Syntax of msg box
  • What are methods in vb?
  • Property window
  • Code window
  • Purpose of timer control
  • Differentiate between key press and key up events
  • Events of mouse
  • Events of keyboard

LONG QUESTIONS:

NO LONG QUESTIONS.

CHAPTER NO.8                  GETTING START WITH C.

MULTIPLE CHOICE:

  1. An IDE consists of
  1. Text editor
  2. Compiler
  3. Debugger
  4. All of these
  1. .exe file is produced by the.
  1. Linker
  2. Loader
  3. Compiler
  4. Interpreter
  1. Division by zero is an example of.
  1. Syntax error
  2. Logical error
  3. Both a and b
  4. None
  1. C-Language was developed in
  1. 1962
  2. 1969
  3. 1970
  4. 1972
  1. The statement written by programmer is called.
  1. Source chart
  2. Algorithm
  3. Identifier
  4. Relationship
  1. The output of the compiler is.
  1. Library code
  2. Linked code
  3. Object code
  4. Source code

SHORT QUESTIONS:

  • Who is programmer?
  • State the purpose of defining preprocessor directive.
  • Define object code
  • Define linking
  • What is header file
  • What do you mean by Delimiters?
  • Define program.
  • Define High level language.
  • How a source code is different than an object code?
  • List any four commonly used High Level Languages.
  • What is the use of main ( ) function in C.
  • Differentiate between compiler and Interpreter.
  • Define programming language
  • Case sensitive in C language
  • What is Preprocessor directive
  • Differentiate between logical errors and syntax errors
  • What is Header files
  • Define Compiler and assembler
  • Differentiate between source code and object code
  • What is Deli meters
  • Structured programming language
  • Differentiate between visual programming and event driven programming language
  • what is .net function
  • What is VBA?

LONG QUESTIONS:

  • What is an Error? Explain different types of Errors in C-Language.
  • What necessary steps are taken to prepare a C program for execution? Explain detail.
  • Briefly describe the basic structure of a C program. 
  • While writing a c program, how many types of errors ca occur? Which one is the most difficult to locate and remove
  • How would you create, edit compile, link and execute a program
  • Define a language processor or translator. Discuss different types of language processors.

CHAPTER NO. 9             ELEMENTS OF   C    

MULTIPLE CHOICE:

  1. The symbol “= “represents.
  1. Comparison operator
  2. Assignment operator
  3. Equal to operator
  4. Logical operator
  1. Which of the following data type offers the highest precision?
  1. Long double
  2. Unsigned long int
  3. Float
  4. Long int
  1. Variable and constant name cannot have a
  1. Number
  2. Underscore
  3. Period
  4. Letter
  1. Void occupy how many bytes in memory.
  1. Zero
  2. One
  3. Two
  4. Four
  1. How many bytes the float data types take in memory.
  1. 2
  2. 3
  3. 4
  4. 8
  1. A type of operator that works with one operand is called.
  1. Binary operator
  2. Unary operator
  3. Ternary operator
  4. Relational operator
  1. ++ This means to increase a value by one.
  1. Modulus
  2. Decrement
  3. Inc
  4. Increment
  1. A+  = B is equivalent to.
  1. B+  = a
  2. A = + b
  3. A = A+B
  4. B = b+a
  1. Which is a valid character constant?
  1. A
  2. “Hello”
  3. “6”
  4. =
  1. C statement ends with
  1. Period
  2. Comma
  3. Colon
  4. Semi colon;
  1. An array subscript should be.
  1. Float
  2. Double
  3. Int
  4. Real
  1. Which is a numeric data type.
  1. Floating point
  2. Integer
  3. Double
  4. Long double

SHORT QUESTIONS:

  • Define identifier with and example
  • Differentiate between declaring and defining a variable
  • Variables and two rules for naming variables
  • Uses of assignment statement
  • What is Operator precedent
  • Define constant. List different types of constants
  • What is Character constant
  • What is Keywords
  • What is Concatenation operator
  • Write any two rules for Naming variable.
  • Define Character constant.
  • What is the use of AND operator?
  • Define Variable.
  • Describe the Identifier.
  • Differentiate between string constant and character constant.
  • List any four types of integer data in C-Language.
  • Differentiate between Implicit and explicit type casting.
  • Describe variable Initialization.

LONG QUESTIONS:

NO LONG QUESTIONS

CHAPTER NO.10                 INPUT/OUTPUT

MULTIPLE CHOICE:

  1. The escape sequence for back slash is.
  1. /
  2. /b
  3. //
  4. /t
  1. Which escape sequence can be used to begin a new line is C?
  1. /a
  2. B
  3. /n
  4. M
  1. Format specified symbol is started with the symbol of.
  1. @
  2. %
  3. $
  4. #
  1. The function getch (  ) is defined in.
  1. Stdio.h
  2. String.h
  3. Math.h
  4. Conio.h
  1. The format secifier % µ is used for
  1. Integer
  2. Unsigned short
  3. Unsigned float
  4. Unsigned decimal integer
  1. Which of the following format specifies is used for sting?
  1. %f
  2. %d
  3. %c
  4. %s

                             C –LANGUAGE.

  1. The function that is used to display output on screen is called.
  1. Scanf
  2. Pow
  3. Dispay
  4. Print f

SHORT QUESTIONS:

  • Define getch (  ) function.
  • Write C statement to print the value of unsigned long x.
  • List some important function for input.
  • List out different type of format spiffier.
  • What the syntax of print f ( ) statement.
  • What is an escape sequence? Give example
  • What is the use of “ scanf (  )” function? Write its syntax.
  • Compare getch( ) and getche ( ) functions.
  • Define Standard input
  • Define Escape sequence
  • Uses of format specifier in C language
  • Use of scanf function
  • What is Clrscr function
  • Define Predict the output…..
     

LONG QUESTIONS:

NO LONG QUESTIONS IN THIS CHAPTER.

CHAPTER NO. 11.               DECISION STRUCTURES.

MULTIPLE CHOICE:

  1. How much a conditional operator takes operand?
  1. 4
  2. 3
  3. 2
  4. 1
  1. In if statement, false is represented by.
  1. 0
  2. 1
  3. 2
  4. 3
  1. When a relational expression is false, it has the value.
  1. Zero
  2. One
  3. Less than 0
  4. Two
  1. Which of the following is used for making two way decision?
  1. If-else
  2. If
  3. Nested if
  4. Switch
  1. Another term for a computer making a decision is.
  1. Sequential
  2. Selection
  3. Repetition
  4. Ineration
  1. Which programming structure makes a comparison?
  1. Relational
  2. Repetition
  3. Sequence
  4. Decision
  1. Relational operators allow you to…………….. Numbers.
  1. Add
  2. Compare
  3. Multiply
  4. Divide
  1. Which programming structure executes program statements in order?
  1. Sequence
  2. Repetition
  3. Decision
  4. Relation
  1. The case block ends with.
  1. End select
  2. End case
  3. Break
  4. Case else

                        C – LANGUAGE.

  1. Which keyword is not used in switch statement?
  1. Default
  2. If
  3. Case
  4. Switch
  1. An expression that uses a relational operator is known as.
  1. Serial expression
  2. Arithmetic expression
  3. Relational expression
  4. Sequential expression
  1. Which is the simplest selection structure?
  1. If
  2. Switch
  3. If-else
  4. Nested –if
  1. What operators are used to join two or more conditions?
  1. Relational
  2. Logical
  3. Assignment
  4. Comparison.
  1. In if statement, true is represented by.
  1. 0
  2. 1
  3. 2
  4. 3
  1. Relational operators allow you to……………. Number.
  1. Compare
  2. Add
  3. Multiply
  4. Divide

SHORT QUESTIONS:

  • Define selection structure enlist its different type.
  • Define control structure.
  • What happens if break is missed in case of block?
  • Define sequential structure.
  • Why a default label is used in switch statement?
  • Control structure & selection structure
  • What is Find output
  • Explain if statement
  • Find error…..
  • Write syntax of if-else statement
  • Why break statement is used in a switch () structure
  • Define Switch statement

LONG QUESTIONS:

  • Write a program that inputs a character and determines whether it is a vowel and consonant.
  • Write a program in C-Language to accept a year from the keyboard. Find out it is”Leath year” OR “ Not leapyear.
  • Write a program that inputs a character and checks whether it is a wovel or consonant using switch statement.
  • Write a program that inputs a year and finds whether it is leap or not. Using if-else structure.
  • Write a program that inputs a number and tells whether it is even or odd using if-else structure.

CHAPTER NO.12        LOOP CONSTRUCTS.

MULTIPLE CHOICE:

  1. A loop within a loop is called.
  1. Nested loop
  2. Inner loop
  3. Outer loop
  4. None of them
  1. This statement causes a loop to terminate early.
  1. Exit
  2. Terminate
  3. Break
  4. All of them
  1. One execution of loop is known as.
  1. Iteration
  2. Cycle
  3. Circle
  4. Duration
  1. While loop is also called.
  1. Counter loop
  2. Conditional loop
  3. Wend loop
  4. Ineration
  1. A special value that makes the end of a list of input data is called.
  1. Terminal value
  2. Sentinel value
  3. Loop control value
  4. Input value
  1. Semi colon is placed at the end of condition in.
  1. Switch
  2. For loop
  3. Chile loop
  4. Do –while –loop
  1. Which is a loop statement.
  1. If
  2. If-else
  3. Switch
  4. For

                             C – LANGUAGE.

  1. In while loop, the loop control variable is always initialized.
  1. Outside the program
  2. Inside the loop body
  3. After loop ends
  4. Outside the body of loop
  1. This statement cause the loop to terminate early.
  1. Break
  2. Terminate
  3. Exit
  4. End
  1. A loop which never ends is called.
  1. Running loop
  2. Continuous loop
  3. Nested loop
  4. Infinite loop
  1. In which loop the condition comes after the body of the loop.
  1. While loop
  2. For loop
  3. D- While loop
  4. Nested loop

SHORT QUESTIONS:

  • What is for ( ) loop? Write its syntax with example.
  • Draw a flowchart of while loop.
  • Define nested loop.
  • Why sentinel value is used in loop?
  • What is continue statement?
  • Define post –test loop.
  • Define infinite loop.
  • What is counter controlled loop?
  • Write syntax of for loop
  • Write syntax of do while loop
  • What is iteration?

LONG QUESTIONS:

  • What is nested loop? Give its syntax. Explain its working with an example.
  • Define “for” loop. Write its syntax, Draw flow chart and explain its working with the help of example.
  • What is while loop? Explain its working with an example and flow chart 
  • What is do-while loop. Write its syntax. Explain its working with example
  • What is nested loop? Explain with example and flowchart.
  • What is for loop structure? Explain its working with example and flowchart.

CHAPTER NO. 13.      FUNCTION IN C

MULTIPLE CHOICE.

  1. Functions that are the part of language are called.
  1. Intrinsic
  2. Biult in function
  3. Language defined
  4. All these
  1. Local variables are called.
  1. Normal
  2. Automatic
  3. Global
  4. None
  1. Global variable are created in.
  1. ROM
  2. Cache
  3. RAM
  4. Hard disk
  1. Multiple arguments passed to a function are separated b.
  1. Period
  2. Colon
  3. Comma
  4. Semicolon.

                        C – LANGUAGE

  1. Gets ( ) takes………………… parameters.
  1. 1
  2. 2
  3. 3
  4. 4
  1. The first line of user defined function definition is.
  1. Function argument
  2. Function prototype
  3. Function header
  4. Function calling
  1. Function declaration is also known as function.
  1. Definition
  2. Header
  3. Prototype
  4. Parameters.
  1. Which statement is used by function to return a value?
  1. Give
  2. Send
  3. Return
  4. Call

 

SHORT QUESTIONS.

  • What is function Proto Type?
  • List the different types of functions.
  • Compare Local and Global variable.
  • What is function call statement?
  • How a function returns value?
  • Differentiate between function definition and function declaration.
  • Define function body
  • Define local variable.
  • What is function definition?
  • Define user defined function.
  • Define function. List some benefits of using functions
  • Local variables and its scope
  • Compare local variables and global variables
  • What is Function cell
  • Define Actual parameters
  • Define Build in functions
  • What is Life time of local variables
  • Function definition and function declaration/prototyping

LONG QUESTIONS:

NO LONG QUESTION IN THIS CHAPTER

CHAPTER NO.14        FILE HANDLING IN C.

MULTIPLE CHOICE:

  1. Which of the following is used to write a string to a file?
  1. Puts ( )
  2. Put c ( )
  3. f puts ( )
  4. f gets ( )
  1. Which of the following functions is used to write a character to a file?
  1. fputc ( )
  2. putc ( )
  3. fputs ( )
  4. fgets ( )
  1. Which mode opens only an existing file for both reading and writing?
  1. “W”
  2. “W++”
  3. “r+”
  4. “a+”

                        C – LANGUAGE.

  1. A sequence of characters from an input device to computer is called.
  1. Input stream
  2. Text stream
  3. Binary Stream
  4. Out put
  1. In the statement FILE *FP, the * represents to.
  1. Pointer
  2. Variable
  3. Multiplication
  4. Parameter

SHORT QUESTIONS:

  • Define EOF marker.
  • Compare Binary and text stream.
  • Which access method can access the data directly?
  • Which function is used to close a file in C language?
  • Why it is important to close a file?
  • Define a stream.
  • How is a file closed?
  • Describe project file in VB
  • What is Project explorer window
  • Differentiate between method and property

LONG QUESTIONS:

NO LONG QUESTIONS IN THIS CHAPTER.