8/13/2019 Cs101 Final Spring2006 s3
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WWW.VIRTUALIANS.COM Identifiers are names used by JavaScript to
refer to variables, objects, properties,methods, and functions.
An identifier must begin with an alphabetical character (a-z or
A-Z), underscore_ character or $ character.
Subsequent characters can be an alphabetical (a-z or A-B) or
numeric character(0-9) or an underscore
Question No: 2 ( Marks: 2 ) - Please choose one
Which of the following words cant be used for naming an
identifier in JavaScript?
struct
plugin
parent
package
Question No: 3 ( Marks: 2 ) - Please choose one
Data Management comes up with different issues except one:
Data entry
Data updates
Data integrity
Data security
Data presentation
Question No: 4 ( Marks: 2 ) - Please choose one
VIRTUALIANS.Com is New Name of VUPAGES.Com
http://www.virtualians.com/http://www.virtualians.com/http://www.virtualians.com/
8/13/2019 Cs101 Final Spring2006 s3
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WWW.VIRTUALIANS.COMChoose correct statement.
The value of a variable can not be changed during execution of
the script.
In JavaScript a variables type is defined before usage.
The untyped feature makes JavaScript simpler to program in when
developing shortprograms.
The untyped feature makes JavaScript simpler to program in when
developing bigprograms.
Question No: 5 ( Marks: 10 )
What kind of operations take place inside Microprocessors
Building Blocks? Enlist them with briefdescription.
Question No: 6 ( Marks: 8 )
Is there any way to call multiple functions with a single event
in JavaScript? Give an example.
Question No: 7 ( Marks: 8 )
a) Differentiate between SMTP and POP3 server. (3 marks)
b) How can you justify that a DBMS is better to use than
Flat-file database? (5 marks)
Question No: 8 ( Marks: 8 )
What will be the output of this programme? Write comments where
you find // symbol in thefollowing code.
function doSomething() { // 1
setTimeout('doSomething()',10000); // 2}
// 3document.write(Virtual University of Pakistan);
VIRTUALIANS.Com is New Name of VUPAGES.Com
http://www.virtualians.com/http://www.virtualians.com/
8/13/2019 Cs101 Final Spring2006 s3
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WWW.VIRTUALIANS.COM
Question No: 9 ( Marks: 8 )
a) How Trojan Horses and Worms affect a computer system? What
guidelines should be adoptedto troubleshoot with malicious
softwares? (6 marks)
b) Which part of a virus consists of malicious computer
instructions? (2 marks)
VIRTUALIANS.Com is New Name of VUPAGES.Com
http://www.virtualians.com/http://www.virtualians.com/
