Punjab Technical University 2010-5th Sem B.C.A Computer Application Internet Application and Java ( ) - Question Paper

Roll No...........................

Total No. of Questions : 13]

Paper ID [A0221]

[Total No. of Pages : 02

(Please fill this Paper ID in OMR Sheet)

BCA (501) (S05) (O) (LE) (Sem. - 5^th) INTERNET APPLICATION AND JAVA

Time : 03 Hours Instruction to Candidates:

1)    Section - A is Compulsory.

2)    Attempt any Nine questions from Section - B.

Section - A

(15 x 2 = 30)

a)    What is bytecode and why is it important to Javas use for Internet programming?

b)    What are the three main principles of object-oriented programming?

c)    What is Internet and why we use internet?

d)    What are E-mail applications?

e)    Define TCP/IP in detail.

f)    How do you create a block of code?

g)    Can a short be assigned to an int without a cast? Can a byte be assigned to a char without a cast?

h)    What is difference between method overloading and method overriding?

i)    Why does Java strictly specify the range and behaviour of its primitive types?

j) What is difference between C++ and Java?

k) Does a superclass have access to the members of a subclass? Does a subclass have access to the members of a superclass?

l) What is thread? How it differ from process?

m) Show how a method called my Meth ( ) is declared if it has a return type of double and has two int parameters called a and b.

n) What is exception? What are various types of exception?

o) Can the bitwise operators be applied to the double type?

Q2) Explain internet architecture and working of internet.

Q3) Write a program that reads characters from the keyboard until a period is received. Have the program count the number of spaces. Report the total at the end of the program.

Q4) What you mean by internet protocol? Give the name of those protocols which help in web and explain working of those protocols?

Q5) What are advantages of WWW? How web works? Explain elements of WWW?

Q6) Discuss various data types available in Java.

Q7) What is inheritance? What are different types?

Q8) What is Applet? How it is embedded in an HTML Document. How parameters are passed to it?

Q9) Can interfaces be extended? Give example.

Q10) What is Java Virtual Machine? How it helps to obtain platform independence?

Q11) How a thread class used to attain multithreading? Illustrate with suitable example?

Q12) Explain how inheritance, method overriding, and abstract classes are used to support polymorphism?

Q13) What are the important issues to be considered in designing a database that is to be accessed through a web page? Explain.

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A-77    2

Attachment: punjab-technical-university-2010-b-c-a-computer-application-23175-1.pdf

Earning:   Approval pending.