FINALTERM EXAMINATION
Spring 2010
Question No: 27 (
Marks: 2 )
What is the difference between ‘single-line text input field’ and
‘password input field’ ? ANS:-
A Password Field is good for
sensitive information. The only item that is absolutely necessary is the Submit
Button. It is a good idea to include a Reset Button for the convenience of the
user.
A text field gathers
information using a single line of text. This field is useful for short
answers. The default text field is blank. If you want to specify default text,
use the VALUE attribute. .
Question No: 28 (
Marks: 2 ) What is internet?
ANS:-
Internet is also called WAN,
which means the interconnection of large number of computer networks and it
consists of millions of private, public, academic, business, and government
networks of local to global scope that are linked by a broad array of
electronic and optical networking technologies.
Question No: 29 ( Marks: 2
)
In JavaScript,
what is event handling? What are the two types of events? ANS:-
Event handling means capturing an event and responding to that.
Events e.g. onMouseOver, OnClick, onLoad,
Onunload, updating the clock etc. are captured by the Java script &
according to the programs they are responded accordingly
Differentiate between onLoad and onUnload ANS:-
On load event is used when the page is load in the browser while on the other
side onUnload event works when the
page closes down.
Question No: 33 ( Marks: 3
)
Elaborate Rester Graphics with examples. ANS:-
Raster graphics are digital images created or
captured (for example, by scanning in a photo) as a set of samples of a given
space . A raster file is usually larger than a vector graphics image file. A
raster file is usually difficult to modify without loss of information.
Examples
of raster image file types are: BMP, TIFF, GIF, and JPEG files.
Question No: 34 (
Marks: 5 )
ANS:-
Database architecture consists of three levels,
external, conceptual and internal. Clearly separating the three levels was a
major feature of the relational database.
NAMES:
Oracle
Database software, Linux, and oracle e business database software , and Oracle
OLAP.
Question No: 36 ( Marks: 5
)
What do you
mean by the term 'Telepresence' in Computing World? ANS:-
Telepresence
• Being
there, without physically being there!
• Two
remotely located people, with the help of special equipment, immersed in a
simulated 3-D environment where they interact like they are sitting next to
each other
• Chatting,
a telephone conversation, or even a videoconference are examples, but in a
degraded sense of the idea
FINALTERM EXAMINATION
Spring 2010
Question No: 27 (
Marks: 2 )
What is a function? Give one example. ANS:-
Function is a reusable code (group of statement)
that is executed when the function is called. It is also known as sub- program.
Function is normally defined in the head section of the code.
Question No: 28 ( Marks: 2 ) What is an intelligent system? ANS:-
Intelligent systems are the programs developed to
perform complicated jobs that reflect human brain and thoughts. If the
algorithms are too much complex or can not be solved instantly then we can use
such systems. Therefore the well intelligent system not only performs well but
it has the capability to rectify any errors by himself if it occurs within his
domain.
The examples of intelligent systems are Robotics,
Business Intelligence …etc.
Question No: 29 (
Marks: 2 ) What is meant by semantic error ? ANS:-
It is an error which a developer encounters when a
statement is executed but it was not intended by him (the developer). Such
errors are very difficult to locate during testing. Mostly these occur during
abnormal circumstances. It may be referred as the logical error.
Question No: 30 (
Marks: 2 ) What is best algorithm?
ANS:-
Greedy algorithm is the best algorithm as it is n
algorithm that always takes the best immediate, or local solution while finding
an answer.
Question No: 32 (
Marks: 3 )
What are the
Sub categories of Artificial Intelligence? Briefly explain any two. ANS:-
1. Robotics
These are the machines which are computer programmed
and perform work which was previously done by humans. They can be found in the
manufacturing industry, the military, space exploration and medical
applications.
1.
Expert Systems
These systems are designed to replace an expert. The
medical expert system is an example of such system which can replace a
Doctor/medical expert.
Question No: 33 (
Marks: 3 )
What are the steps of working of TCP and IP protocols in internet
transmission? ANS:-
TCP divide messages in to
many packets (capsulation) and sent these messages over the internet and IP
route these messages on the internet to the correct destination and upon
reaching the messages on its destination the messages are encapsulated.
Question No: 34 ( Marks: 5
)
What is ARPANET and who developed it? ANS:-
ARPANET stands for Advanced
Research Projects. The initial purpose was to communicate with and share
computer resources among mainly scientific users at the connected institutions.
In the beginning it was connected four universities and enabled scientists to
share resources.
It was headed
by Dr. J.C.R. Licklider.
Question No: 35 ( Marks: 5
)
Define
professional ethics and its benefits with an example? ANS:-
Professional Ethics
• Professional
ethics are a category of ethics, and here we discus the professional ethics
relevant to computing
• Awareness
of professional ethics is gaining importance with time as the decisionmaking
process in the work place keeps on increasing in complexity
• The
professional ethics provide a way of simplifying that decision making process
Let us now discuss a few situations where I will request you for your ethical opinions
Question No: 36 (
Marks: 5 )
Write JavaScript code for the following:
Make a function compareWithTen(value)
Compare the
function argument with ‘10’ and display a message whether the value is less
than, equal to or greater than 10.
FINALTERM EXAMINATION
Spring 2010
Question No: 27 ( Marks: 2
)
What are
application softwares? List down the names of three application softwares. ANS:-
Definition: Application Software are that software
then can interact directory with the user for performance of respective type of
work.
Following are the types of Application Softwares:-
·
AutoCAD and Corel Draw
·
Business Software
·
Productivity
SW
·
Games Software
Question No: 28 ( Marks: 2
)
Why Local
variable is preferred over Global variable ? ANS:-
Global
variable has some advantage with Local variables is preferred due to the
following reasons:-
When we declare any global variable in web page then
in case of error and logic it’s very difficult to see on which line this
variable is used and what’s his value if we have more than 2000 lines and all
the functions in web page using that Global Variable so Global variables can
make the logic of a Web page difficult to understand.
As we know we can use Global
variable everywhere so Global variables also make the reuse and maintenance of
your code much more complex.
Question No: 30 (
Marks: 2 )
What is Structured Vector Graphics ? ANS:-
This is a
plug-in that is required to view swf (flash) files in the web browser
Question No: 31 (
Marks: 3 )
What kind of
new jobs are created because of computing? And which old professions are being
eliminated? ANS:-
Due to computing where people are getting benefits
from automated systems on the other hand the people that are with KHATA system
or Manual system and they don’t know about computers are eliminated due to this
reason and people take place of many people. We can see in the offices where
before computer if there are four person required now only one person is
required for example with the help of database we can store more than thousand
of information and only one person is managing the whole data that is DBA. In
the old system many people are writing the data in registers and then its also
very difficult to find the specific record.
Now we can see
companies are hiring:- Data Entry Operators
System
Engineers Software Developer DBA etc.
FINALTERM EXAMINATION
Spring 2010
Question No: 28 (
Marks: 2 )
Write names of the DoS attack’s phases? ANS:-
DoS (Denail of service): DoS attach has in total 3
phases and below they are listed:
1.
Search
2.
Arm
3.
Attack
Question No: 32 (
Marks: 3 )
Briefly mention any three problems in old modes of presentation
development ANS:-
Lack of
resolution
Low color configuration No graphic animation
Question No: 34 ( Marks: 5
)
Why the quality of image in dithering scheme is not good? ANS:-
In this scheme, pixels of alternating colors are
used to simulate a color that is not present in the platelet
For example, red and green pixels can be alternated
to give the impression of bright yellow
The quality of the displayed image is poorer
FINALTERM EXAMINATION
Spring 2010
Question No: 27 (
Marks: 2 )
Define the term 3D Rendering ANS:-
The process of converting
information about 3-D objects into a bit-map that can be displayed on a 2-D
computer display.
Question No: 29 (
Marks: 2 )
Define testing with respect to programming.. ANS:-
Testing:- The tasks performed to determine the
existence of defects. Programming:- The
process of telling the computer what to do.
Question No: 30 (
Marks: 2 )
What is a compiler? Write its one benefit over
interpreter. ANS:-
Compiler translates the program written in a HLL in
one go. The translated code is then used by the uP whenever the program needs
to be run. In contrast of interpreter, a compiler translates high-level
instructions directly into machine Language Compiled programs generally run
faster than interpreted programs.
Question No: 31 (
Marks: 3 )
Who is a Computing
Professional?
ANS:-
Computing technology has changed our way of life
like no other technology. We need to study how it has done it to highlight the
mistakes and success stories of the past. We need to do it so that we can learn
from them and select our future direction
Accordingly.
Question No: 33 ( Marks: 3 )
What is ICMP?
ANS:-
ICMP is the "Internet Control Message
Protocol". ICMP packets are small packets used in local networks and on
the Internet, most typically, for network troubleshooting and problem location.
Question No: 35 (
Marks: 5 )
Write down the advantages of Natural Language
Processing. ANS:-
It is able to read what you write, comparing it to a
stored database of texts. It then corrects your errors and suggests
alternatives. What advantages can this give you? Here are some:
1. You
Don't Have to Worry About Careless
Mistakes and Typos
2.
Your Grammar and Punctuation Errors are Fixed
3. Allows
You To Get More Accomplished
4.
Gives You A Better Vocabulary
5.
Instantly Upgrades Your Communication Skills
Question No: 36 (
Marks: 5 )
Draw hierarchy
of the people in the small project?
FINALTERM EXAMINATION
Spring 2010
Question No: 30 (
Marks: 2 )
What was the obstacle to the construction of analytical engine? ANS:-
Charles Babbage had huge difficulties raising money
to fund his research. As a last resort, he designed a clever mathematical
scheme along with Ada, the Countess of Lovelace. It was designed to increase
their odds while gambling. They bet money on horse races to raise enough money
to support their research experiments
Guess what
happened at the end? The lost every penny that they had.
.
Question No: 33 ( Marks: 3
)
Give any three applications of computer graphics?
Question No: 34 (
Marks: 5 )
Mention any
five applications of Artificial Intelligent System ANS:-
1. Games
2. Image recognition
3. Medical diagnosis
4. Robots
5. Business intelligence
Question No: 36 (
Marks: 5 )
Explain function arguments with the help of an example? ANS:-
A named group of statements
that is put together once and then used (by reference) repeatedly on a Web page
Code becomes easier to read, understand and maintain
Question No: 33 ( Marks: 2 )
What is meant by universal access of internet
services ?
ANS:-
Universal access of internet services means same
functionality to every one.
Question No: 38 ( Marks: 5 )
Differentiate between For and While loop by writing
the syntax of both loops.
ANS:-
When the exact number of iterations is known, use
the ‘for’ loop
When the number of iterations depend upon a
condition being met, use the ‘while’ loop ‘for’ loops become especially useful
when used in conjunction with arrays
We’ll find
out about arrays today, and we’ll probe their usefulness as part of ‘for’ loop
structures
Question No: 41 ( Marks: 10 )
Is tabular data storage better than flat file data
storage? Justify your answer.
ANS:-
1.
Similar items of data form a column
2. Fields placed in a particular row – same as a flat-file
record
– are strongly
interrelated 3.One can sort the table w.r.t. any column
4. That
makes searching – e.g., for all the books written by a certain author – straight forward
5. Similarly,
searching for the 10 cheapest/most expensive books can be easily accomplished
through a sort
6. Effort
required for adding a new field to all the records of a flat-file is much
greater than adding a new column to the table
CONCLUSION: Tabular storage is better than flat-file storage
FINALTERM EXAMINATION
Spring 2009
Question No: 31 (
Marks: 1 )
In programming, what is a loop?
ANS:-
In computer science a for loop is a programming
language statement which allows code to be repeatedly executed. A for loop is
classified as an iteration statement.
Question No: 32 ( Marks: 1 )
What are the other names of function? Any one.
ANS:-
Routine , procedure , sub program
Question No: 33 ( Marks: 2 )
How JavaScript Arrays are heterogeneous?
ANS:-
Arrays are
heterogeneous in java script because at the same time simultaneously they can
hold elements of multiple data types
Question No: 34 ( Marks: 2 ) What is the database?
ANS:-
Data base is a collection of
organized data in a proper way that computer can quickly search for any desired
data item, its an easy way of allowing of manipulation of data, they are design
in such a way that access to any desired data can be identified and reached
quickly and easy, they are generally consist of collection of interrelated
files.
Question No: 35 ( Marks: 3 )
Differentiate between LAN and WAN with one example
of each.
ANS:-
LAN is a local area network where
as wan is a wide area network
LAN can be used in a specific
areas with limited computers where as wan can be used on computers shared by
large distances
For example LAN can be used on pc
s or an organization located in one building but wan can be used on large
scales like banks all over or in any Large communication systems
Question No: 36 ( Marks: 3 ) What are Trojan Horses?
ANS:-
Trojan horses are a kind of cyber
crime, they are v harmful to computer because they are stand alone program and
the look like what they are not like any thing amusing or not harmless like
games..
Question No: 38 ( Marks: 5 )
What are the important properties, methods and event
handlers of image object?
ANS:-
The primary use of the image
object is to download an image into the cache before it is needed to display ,
image object can be used to create different kinds of animations or to display
one of several images based on the desired requirement , in java script image
object can be used to display the required pre loaded image
Properties of
image object is :- height , width ,hspace ,vspace , src , name border etc
Methods :none
Event
handlers: on
aboart , onload, onerror etc
Question No: 40 ( Marks: 10 ) Write a note on :
Coding
guidelines
Guidelines for
developing short programs.
ANS:-
Coding guidelines
• Always
use semicolons to end statements
• Indent
blocks of code (2 to 5 spaces)
• Identifiers
• Use the
camel back scheme
• Variables: nouns
• Functions: verbs
• Comment Liberally
• Make
them descriptive but concise
Guidelines for developing short programs.
• Read
and understand the problem
• Do you
have all the required data?
• No: Get it
• Else
assume it. State it explicitly
• Do the design
Question No: 41 ( Marks: 10 )
write a note
on each of the following:
a. Vector or Object-Oriented Graphics:
b. Bit-Mapped or Raster Graphics:
ANS:-
Vector or Object-Oriented Graphics:
In Vector or object oriented
graphic everything drawn is treated as object. objects retain their identity after
they are drawn. These objects can later be moved, stretched, duplicated,
deleted,etc. they are resolution independent and have relatively small file
size. the examples are: swf, svg, wmf, ps brass_ibrahim: Vector graphics is the
use of geometrical primitives such as points, lines, curves, and shapes or
polygon(s), which are all based on mathematical equations, to represent images
in computer graphics.
brass_ibrahim: The term
"vector graphics" is mainly used today in the context of
two-dimensional computer graphicsVirtually all modern 3D rendering is done
using extensions of 2D vector graphics techniques .Virtually all modern 3D
rendering is done using extensions of 2D vector graphics
techniques
Bit-Mapped or Raster Graphics:
Treats everything that is drawn
as a bit-map
If an object is drawn on top of
another, it is difficult to move just one of them while leaving the other
untouched
Changing the resolution often
requires considerable touch-up work Relatively large file size
Examples: gif, jpg, bmp
masood.tariq: Bit-Mapped or
Raster Graphics:
Treats everything that is drawn
as a bit-map
If an object is drawn on top of
another, it is difficult to move just one of them while leaving the other
untouched
Changing the resolution often
requires considerable touch-up work Relatively large file size
Examples: gif, jpg, bmp
Question No: 27 (Marks: 1) What BIOS stands for?
ANS:-
Binary Input Output System
FINALTERM EXAMINATION
Spring 2009 Final
Question No: 28 ( Marks: 1 )
List down the Analytical Engine's components name
(any two)
ANS:-
Google & Netscape,
Question No: 29 (Marks: 2)
Why uploading a web page is important? Describe in 2
– 3 lines.
ANS:-
By only uploading webpage we
could place our information in order the other can reach up to ready what we
load, upload means make available our data or information for the world web
browsers
Question No: 30 ( Marks: 3 )
What is the
difference between microprocessors and microcontrollers? Give one example of
both.
ANS:-
The
microprocessor is electronic equipment which can perform several function and
also processing of data and information present in a computer, while
microcontroller can only perform one function for that its design
Example
Microprocessors _ Pentium 4
Microcontroller _ can be a
switch in side the washing machine
Question No: 31 ( Marks: 5 )
Differentiate uni-Processor OS from Multi-Processor
OS.
ANS:-
The
Multiprocessors is when more than one processor is under operation it can be
several or may
hundreds of the kind to perform
one great operation or calculation, while our PC is a kind of uni- processor
Question No: 32 ( Marks: 5 )
Why do we call JavaScript an Object-based Language?
ANS:-
Java Script is a language by
which we are writing our web-pages, this language is designed to work for web
pages
FINALTERM EXAMINATION
Spring 2009 Final
Question No: 31 (
Marks: 1 ) What is heuristic?
ANS:-
Common sense Lesson drawn from
experience (Artificial) Intelligent Systems
SW programs or SW/HW systems
designed to perform complex tasks employing strategies that mimic some aspect
of human thought
or
·
a commonsense rule (or set of rules) intended
to increase the probability of solving some problem
·
of or relating to or using a general
formulation that serves to guide investigation
Question No: 32 ( Marks: 1 )
In
programming, what is an object?
ANS:-
A named collection of properties
(data, state) & methods (instructions, behavior)
Question No: 33 ( Marks: 2 )
What is
spreadsheet? List any two jobs that it can do.
ANS:-
A spreadsheet
is a grid that organizes data into columns and rows. Spreadsheets make it easy
to display information, and people can insert formulas to work with the data.
1.
Electronic replacement for ledgers Charts
2.
financial-forecasting
Question No: 35 ( Marks: 3 )
Explain how
many ways businesses monitor their employees?
ANS:-
• Systems
are available that monitor almost every key stroke that an employee makes on a computer
• Systems
are available that read and censor all incoming and outgoing eMail
• It is
quite straight forward to monitor where you surf, and when
Question No: 36 ( Marks: 3 )
What is
difference between Design and System Architecture?
ANS:-
Only the
higher level designs are called System Architecture and lower level designs can
not be called system Architecture, and we can also say the every Architecture
can be called design but every design
can not be called Architecture. (For Reference Listen Lecture No.24)
Question No: 39 ( Marks: 5
)
Elaborate the
‘+ ’ operator and its constraints with the help of examples The “+” String
Operator
The “+” operator can be used to
concatenate two strings title = “bhola” + “continental”
The value of the variable title becomes “bholacontinental”
Question No: 40 ( Marks: 10 )
Write a JavaScript program having two functions sum
and mean.
ANS:-
The web page will ask the user to
enter five values to be added.
After taking
input it will calculate the sum and mean of those values by calling sum and
mean functions.
Question No: 41 ( Marks: 10 ) Define the following terms.
ANS:-
Object
A named collection of
properties(data, state) & methods (instructions, behavior)
Event Handler
A n e v e n t h a n d l e r i s
a
c o m m a n d
w h i c h
c a l l s
a
f u n c t i o n w h e n
a n e v e n t h a p p e n s , s u c h a s t h e u s e r c l i c k i n g a b u t t o n
Local Variable
Declaring
variables (using the var keyword) within a function, makes them local•They are
available only within the function and hold no meaning outside of it
Scope of Variable
Defining the space in which a
variable is effective is known as
Defining the scope of a
variable. A variable can be either local or global in scope
Array
An indexed list of elements
FINALTERM EXAMINATION
Fall 2009
Question No: 32 ( Marks: 1 ) What does TCP/IP stand
for? ANS:-
TCP stand for Transmission Control Protocol
IP stands for Internet Protocol
Question No: 34 ( Marks: 2 )
What is the
use of Default keyword in switch
structure?
Question No: 36 (
Marks: 3 )
Where "While" loop is more preferable than "For"
loop and vice versa? , explain with the help of example.
Question No: 37 (
Marks: 3 )
What do you mean by FTP or File Transfer Protocol?
ANS:-
This protocol is used to upload and download the files on remote
computers.
Question No: 41 ( Marks: 10 )
Develop a web page that displays six thumbnail images. A main image
should change to a larger version of the thumbnail as soon as the mouse moves
over a thumbnail image. Write
complete HTML
and JavaScript code.
FINALTERM EXAMINATION
Fall 2009
Question No: 32 (
Marks: 1 )
Name any software which can be used to make a
presentation. Question No: 38 (
Marks: 5 )
In which situation, we use i- switch construct
ii- multiple
If-else construct
Question No: 39 (
Marks: 5 )
What are the
responsibilities and profile of a Team Lead?
ANS:-
Team Lead
• Responsibilities:
–
Planning and tracking of the project
–
Detailed design
–
Professional development of team members
–
In case of small teams, development
activities
• Profile:
–
5+ years of development experience
–
Excellent interpersonal skills
–
Good planning skills
–
Good design
skills
Question No: 40 ( Marks: 10 )
Give any five well-known design heuristics for
architectural design.
ANS:-
Given many parts of a system to
be designed/built, do the hard part 1st. All the serious mistakes
are made on the very first day.
Simplify, simplify, simplify!
Probably the most useful heuristics for increasing reliability while decreasing
cost & time-to-build.
FINALTERM EXAMINATION
Fall 2009
Question No: 31 (
Marks: 1 ) What does NIC stand for?
ANS:-
Network Interface Cards.
Question No: 32 ( Marks: 1 )
Why there is a need to use primary key in database ?
ANS:-
Primary Key is a field that
uniquely identifies each record stored in a table.
Question No: 37 ( Marks: 3 )
Write JavaScript code to convert the number 236.2363611111556 into
currency format and JavaScript statement to show output.
Question No: 39 (
Marks: 5 ) Write a short note on:
a. Good programming methodology?
b. Correct program
ANS:-
Good programming methodology
A methodology
that enables the lowest-cost and on-schedule development of programs that are
correct, easy to maintain & enhance.
Correct program
A program with correct syntax
& semantics.
FINALTERM EXAMINATION
Fall 2009
Question No: 32 (
Marks: 1 )
What kind of information can be stored in a
database?
ANS:-
It can store numbers, Booleans,
sound, video, images etc.
Question No: 33 ( Marks: 2 )
Define the key weakness of the web?
ANS:-
Initially web was designed only for humans to read not for computers
to understand it.
Question No: 34 ( Marks: 2 )
How many
iterations would this ‘for’ loop run for?
for ( x = 50 ; x < 0 ; x = x -
1 ) { document.write ( x ) ;
}
Answer:
50 iterations
Question No: 35 ( Marks: 3 )
How can we define a Pixel?
ANS:-
It is the smallest element of
image which is spread with regular array on display and each element consist of
particular color.
Question No: 36 ( Marks: 3 )
Write JavaScript code to convert the number 236.2363611111556 into
currency format and JavaScript statement to show output.
Question No: 37 (
Marks: 3 )
Write code in JavaScript to display the odd numbers between 20 to 100
using FOR statement. Note: No need to write whole HTML program. Just JavaScript code of require
part is require.
Question No: 38 ( Marks: 5 )
How marketing strategies are changed with the progress in computing?
How new marketing strategies are implemented?
ANS:-
Marketing Strategy Changes with
the new requirements of the modern era and the applications of the business.
The web has changed marketing strategy from a mass focus to single person
focus. We collected data and analyze accordingly to find out the behavior of
the market and end users. In new marketing more advertising is being done
through email and web and get feedback.
Question No: 39 ( Marks: 5 )
<script>
Number = new Array(5); var abc=4;
for(var i=1; i<=5 ; i=i+1)
{
Number[i]= abc*i;
}
Number.reverse();
for(j=0;j<5;j=j+1)
{
document.write("
"+Number[j]+"<BR>");
}
</script>
A) What should be output of above code?
B) Explain the highlighted lines of code?
Question No: 40 (
Marks: 10 )
Write a brief
note on each of the following.
v FTP
v Telnet
v Instant messaging
v VoIP
ANS:-
FTP: File
Transfer Protocol: This protocol is used to upload and download the files on remote
computers.
Telnet: FTP allows file operations only while Telnet can log on to
a computer of other users through TCP/IP network and use like a local user, it
help in testing of remote web server.
Instant Messaging: This is the service of messaging provided on the
internet like MSN messenger, Yahoo messenger, through which we interact people
randomly whenever required.
VoIP: Voice over IP, It is used to
transmit the voice from one IP to another IP, In which voice is first broken
down and then transmitted over a network.
Question No: 41 ( Marks: 10 )
What are
Commonsense Guidelines to avoid viruses? Discuss about Antivirus as well.
ANS:-
Commonsense Guidelines to avoid
viruses are as follows:
1.
Do not open attachment of unwanted emails.
2.
Don’t used copied/pirated Softwares
3.
Regularly place data somewhere as backup
4.
Use Registered and Trusted Softwares only.
5.
Install Antivirous in the system
6.
Update your Windows and softwares with the
passage of time.
7.
Scan before using any external device with
your system as USB Device.
Antivirus:
This is the software design for
preventing your system from harmful effects and maintain the speed of computer.
These softwares are available on the CD’s and DVD’s. These softwares
continuously monitor the systems and aware when any harmful virus is detected
and asked for the further operations. Some automatically remove the viruses
from the system.
FINALTERM EXAMINATION
Fall
2009
Question No: 32 (Marks: 1)
What are Local
or Function-level Variables?
ANS:-
Declaring variables (using the
var keyword) within a function, makes them local.
They are available only within
the function and hold no meaning outside of it.
Question No: 34 (Marks: 2)
What is the
Data Normalization? Also define its goal.
ANS:-
Data normalization is to sort out
complex data into simple form. It uses to simplify the complex information to
make it more user-friendly.
Question No: 36 (Marks: 3) Differentiate Local and Global Variables.
ANS:-
Local variables are the variables
have limited scope while global have bigger scope Local variables are not
accessed by others while global is accessible to every one
Local variable used by single
user while global variable can be used by different users at time from all
around.
Question No: 38 (Marks: 5)
How DoS attack
is a cyber crime? For what cyber crime can be used?
ANS:-
DoS stands for Decline of Service
and it is a cyber crime as it jams and in some cases shut down the targeted
computer by sending too much unnecessary data packets to it which ultimately
exceeds the normal processing eventually results the computer or server to
stuck and unable to provide services to others. It can be used to destroy the
fame and diminishing of no of users requesting information and services from
that particular server or computer.
FINALTERM EXAMINATION
Fall 2009
Question No: 31 (
Marks: 1 ) SMTP stands for what?
ANS:-
Simple Mail Transfer Protocol
Question No: 33 ( Marks: 2 )
In which situation we should use Inline Event
Handling?
ANS:-
Event handler are placed in the
BODY portion of a web page as attributes of HTML tags The event handler
attributes consist of 3 parts
a) The
equal sign
b) The
identifier of event handler
c)
A string consisting of java script statements
enclosed in double or single string Multiple JavaScript statements can be
placed in that string, but all have to fit in a single line. No new line characters with in line event handling
Inline event handler can be
used normally in a condition when we want to execute the eventd direclty
and quickly in the same line of
code.
Question No: 39 ( Marks: 5 )
What is animated gif? How can we use it? If we
animate images in JavaScript then is it better?
ANS:-
It is bit mape
image format introduced in 1987by compuserve.It support up to 8 bits per
pixel.It also support animation And allow a separate palette of 256 colors for
each frame.
Uses: We can use it in web site they
are suitable for sharp edged line art with limited number of colors. They are
good for small animation and low resolution clips.
The size is small and on web
site they can uploaded and downloaded easily
Question No: 40 ( Marks: 10 )
What is the problem with Relational Database and
what solution you can suggest for it?
ANS:-
when we use to store object
oriented data into a Relational database it need to be translated in form which
is suitable for the relational database.
Again when we
need to read RDBMs the Data need again back to be translated into object
oriented form to read.
This two process delay associated
processing and time spent in writing and maintaining the translation codes are
the key disadvantage with Relational Database .
Solution:
Object oriented database Object
Relational database
The data should be divided and
save in multiple table and tabular form ,so that open ,searching
.sorting ,editing and saving of
data can be performed quickly. With tabular form one can sort w.r
Question No: 41 ( Marks: 10 )
How can we neutralize DoS attack? Can we track the
attacker?
ANS:-
Denial of service attempt to make
a computer resource unavailable to its Intended user . Easiest way to survive
an attack is to have planned for the attack.
Good contact with ISP and some
security providers and CERT are essential also having a separate emergency
block of IP address for Critical servers with a separate rout can be effective.
We should use genuine operating
system can also be helpful.
By using an extremely stateful
packet filter that will inexpensively drop any unwanted packet serviving DoS
attack Becomes much Easier.
We can also use Fierwalls . Using
Antivirus softwear Using private net work Using encryption
Network Sniffer
Intrusion detector By using all
these techniques we can neutralize DoS Attack
Investigative process should
begin immediately after the DoS Attack begins.By using IP address we can Track
Attacker.
FINALTERM EXAMINATION
Fall 2009
Question No: 31 (
Marks: 1 ) What is bandwidth?
ANS:-
Bandwidth is a capacity of
communication channel of carrying data.
Question No: 32 ( Marks: 1 ) What is “My Personal Agent”? ANS:-
A computer programe that work
automatically and have voice interface
Question No: 33 ( Marks: 2 )
For what purposes FTP is used in networks ?
ANS:-
To download or upload files / data to a remote computer
Question No: 34 ( Marks: 2 )
How can you define a readable program?
ANS:-
A program that is easy to read
& understand also easy to maintain and enhance.
Question No: 36 ( Marks: 3 )
How can you define a consistent web design? Why is
it needed?
ANS:-
A consistent
web design is Easy understandable, not with heavy graphics, easy navigation. It
is needed because most of the website views leave the site because of poor
navigation and not easy to understand, text and design is not clear etc.
Question No: 38 ( Marks: 5 )
What are the advantages of
multimedia presentations? Write any five.
ANS:-
Multimedia presentation is a
great tool for effective communication:
Advantages:
1.
Easy to make last minute change
2.
More attractive
3.
Can include animation, videos etc.
4.
Better presentation easy to understandable
for participants comparing to manual presentation.
5.
Undo feature
Question No: 39 ( Marks: 5 )
Can a human
doctor be replaced by an Expert System? Give reasons to support your answer.
ANS:-
Expert System is a computer
system which simulates the knowledge and expertise of a human expert. Yes, a
human doctor can be replaced by an Expert System. Following are the reasons to
support my
1.
A large database of knowledge can be added to
and kept up to date, it can store more knowledge than a person.
2.
The Expert System cannot FORGET or get facts wrong.
3.
It survives forever. There is no loss of
knowledge as there is when a doctor retires.
4.
The Expert System can access specialist
knowledge that a doctor may not have.
Question No: 40 ( Marks: 10 )
Explain the
following issues of Data Management? (3+4+3)
1.
Data entry
2.
Data updates
3.
Data security
ANS:-
DATA ENTRY:
There is new data entered every
day. New customers are added every day.
Some of the data entry requires
the manual entry into computer system New data entry needs to be entered
correctly
DATA UPDATES:
Old titles must be removed
regularly Data changes every time
Prices change
Transportation / shipping cost
changes Customer personal data changes Schemes changing, new offers
Every new entry needs to be
entered correctly
DATA SECURITY:
All data in
the system is very critical to its operation, the security of the customer’s
personal data is most important. Most of the hackers are always trying for that
type of information specially Credit Card Numbers.
This problem can be managed by
using proper security arrangements and mechanisms that provides access to only
authorized entities. System Security can be improved through, encryption,
firewalls and updated Antivirus Softwares
Question No: 41 ( Marks: 10 ) Write a note on the followings
a.
Image Preloading process
b.
Animated Gifs
IMAGE PRELOADING PROCESS:
The primary use of image
preloading process is to download the image into the cache before it is
actually needed to display.
PROCESS:
1.
An example of the image object is shaped
using the NEW keyword
2.
The src property of this instance is set
equal to the filename of the image to be pre-loaded
3.
This step starts the down-loading of the
image into the cache without actually displaying
4.
When a pre-loaded image is required to be
displayed, the src property of the displayed image is set to the src property
of pre fetched image
ANIMATE GIFS:
We can save 16 gif images of the
previous example in a single file in the form of an animated gif, and then used
it in a regular <IMG> tag to display a moving image. However, JavaScript
provide better control over the sequencing and the gap between the individual
images.
FINALTERM EXAMINATION
Fall 2009
Question No: 31 (
Marks: 1 )
What is the out put of the
following JavaScript code ? name=”Ali Akbar”; document.write(name.charAt(4)) ;
ANS:- A
Question No: 32 ( Marks: 1 ) What does WAN stand for?
ANS:-
Wide Area
Network – A network in which computers are separated by great distances
typically across cities or even continents.
Question No: 33 ( Marks: 2 ) Why hub is used in networks? ANS:-
The network
traffic controller – components of convential computer networks. Hub is used to
connect the different computers in the network i.e. to the server.
Question No: 34 ( Marks: 2 )
What is output of the
following JavaScript code ?
Str=”Virtual University of
Pakistan”; document.write(str.substring(5,str.length)) ;
Question No: 37 ( Marks: 3 )
Elaborate
Vector or Object oriented graphics with atleast one example.
ANS:-
Treats
everything that is drawn an object. Objects retain their identity after their
drawn. These objects can later be easily moved stretched duplicated deleted etc
are resolution independent relatively small size. e. g. swf, wmf,
Question No: 39 ( Marks: 5 )
Why should we, as computing professionals, be interested in studying
the social implications of our creations?
ANS:-
This is imp. Because of keeping
the track of money wise while implementation actually and see the results. This
fits with the organization or no. to check there is any side effects morally or
no. we have to be very careful while creation of any system., error free, data
loose recovery. Etc.
Question No: 40 ( Marks: 10 )
Write
responsibilities of the followings
Developer Executive Team Support Team ANS:-
1. Developer
a)
Module level
design.
b)
Coding
c)
Unit testing
2. Executive Team
a)
Responsible for the day to day operations.
b) All the
decision related issues.
c) Policy
making and changing etc.
e.g. In this usually CEO and CMSO
involves
1. He is responsible for the
day to day operation and great organizational skills.
3. Support Team
The support team is responsible
for the complete operations such as arrangement for performing any kind of task
from the starts to the end. Fully project handling and performing etc. In case
of any maintenance they are the responsible for commencing the job and making
sure to complete.
Question No: 41 ( Marks: 10 )
Write HTML and JavaScript code for the requirements shown in the
diagram below.When ConvertoUpperCase button is pressed, the entered text is
converted to upper case and result is displayed in the result text box.
Similarly, when ConvertoLowerCase button is pressed, the entered text is
converted to lower case and result is displayed in the result text box.
FINALTERM EXAMINATION
Fall 2009
Question No: 32 (
Marks: 1 )
What are the types of computer network according to
the distance between nodes?
ANS:-
The types of computer network
according to the distance between nodes are:
1. LAN
2. WAN
Question No: 35 ( Marks: 3 )
What is the difference between Internet and
Intranet?
ANS:-
The Internet is an open, public space, while an intranet is designed to
be a private space. An intranet may be accessible from the Internet, but as a
rule it's protected by a password and accessible only to employees or other
authorized users
Question No: 36 ( Marks: 3 )
Write down three advantages of using Functions in a program.
ANS:-
*
Debugging is
easier
* It is
easier to understand the logic involved in the
program
* Testing
is easier
* Recursive
call is possible
* Irrelevant
details in the user point of view are hidden in functions
* Functions
are helpful in generalizing the program
Question No: 40 ( Marks: 10 )
How can you make your website's structure more
navigable?
ANS:-
A properly
planned website project makes the organization, development and the design of
the website easier for the designer. Effective planning allows a website
designer to produce a website more navigable and usable for the site's readers,
allowing them to find the desired information. You can accomplish this by
establishing and maintaining a creative focus throughout the design process and
throughout the implementation.
Four steps for planning your website structure
1. Discover
the correct niche for your website
2. Find
correct keywords and choose the most profitable website concept for you.
3. Make
your final website concept ever more profitable by analyzing and using the competition.
4. Build
the optimal structure of your website that corresponds with your table of
highly profitable keywords.
The correct structure will make your site easy and navigable for both your visitors and your search engine spider
Question No: 41 (
Marks: 10 )
Define network organization? What are important
features of network organization? (4+6)
ANS:-
Network Organization :
Network organization is an
interfirm organization that is characterized by organic or informal social
systems. A company or group of companies that has a minimum of formal
structures and relies instead on the formation and dissolution of teams to meet
specific objectives..
Features of Network Organization:
1. The
organizations are learning that business can be done in a more effective manner if emphasis is placed upon cooperation,
shared responsibility and networking:
·
Within the
organization
·
And also with their customers and suppliers
2. Changes
according to the demand of the times
3. Works
effectively to meet the business goals of the
organization
4. Everyone
has a feeling that he/she is playing a major role in the organization which
eventually gives a feel of ownership and because of that employee can put his
best effort to accomplish a task.
FINALTERM EXAMINATION
Fall 2009
Question No: 32 (
Marks: 1 ) What is an IP address ?
ANS:-
Every device connected to the
public Internet is assigned a unique number known as an Internet Protocol (IP)
address.
Question No: 34 ( Marks: 2 )
Define semantic web with respect to the present web?
ANS:-
The Semantic
Web is an idea of World Wide Web inventor Tim Berners-Lee that the.Web as a
whole can be made more intelligent and perhaps even intuitive about how to
serve a user's needs.
Question No: 38 ( Marks: 5 )
What is the role of usability in the design of a
website?
ANS:-
On the Web, usability is a
necessary condition for survival. If a website is difficult to use, people leave. If the homepage fails to clearly
state what a company offers and what users can do on the site, people leave. If users get lost on a website,
they leave. If a website's
information is hard to read or doesn't answer users' key questions, they leave.
Question No: 41 ( Marks: 10 )
Write down
HTML and JavaScript code for the following requirements:
Declare an
Array with the identifier SUBJECT having length 5. Assign following values to
the
array
elements:
MIS, Java, Algorithms, Databases, C++ Show all values
in reverse order.
Question No: 31 (
Marks: 1 ) What is an Array?
ANS:-
An indexed list of elements.
FINALTERM EXAMINATION
Fall 2009
Question No: 34 (
Marks: 2 )
Which benefits
a developer can achieve by following the heuristics for system architecting?
ANS:-
Question No: 36 ( Marks: 3 ) Define Primary key and
Queries ANS:-
Primary Key
Primary key is a field that
uniquely identifies each record stored in a table.
Queries
Queries are used to view, change,
and analyze data. They can be used to combine data from different table and
extract the exact data that is desired.
Question No: 37 ( Marks: 3 )
Briefly
describe Holographic Storage.
ANS:-
Holographic Storage
• Digital
data stored in and read from a 3-D optical material with the help of lasers
• Depending
upon the material, they could be read-only or
R/W
• The
data density (quantity of data stored per unit volume) will be millions of
times more than anything available today
• The
concept has been validated but commercial applications are at least 10 years
away
Question No: 39 ( Marks: 5 )
What is Robotics? How Robots making our daily and
industrial life easy?
ANS:-
Robotics
These are the machines which are computer programmed
and perform work which was previously done by humans. They can be found in the
manufacturing industry, the military, space exploration and medical
applications.
FINALTERM EXAMINATION
Fall 2008
Question No: 31 ( Marks: 1 ) When does recursion occur? ANS:-
The power of recursion evidently
lies in the possibility of defining an infinite set of objects by a finite
statement.
Question No: 34 ( Marks: 2 )
List down the names of two array methods available
in JavaScript.
ANS:-
1.
sort( ) [sorts elements in alphabetical order]
2.
reverse( ) [Reverses the order of elements]
Question No: 36 ( Marks: 3 )
How can we include images in a web page using HTML
and Java script?
ANS:-
Image in HTML
<IMG src=URL, alt=text height=pixels width=pixels align="bottom|middle|top">
Image in Javascript
Images in JavaScript can be
manipulated in many ways using the built-in object Image. Additional properties
to HTML are hspace, vspace & lowsrc.
Example: It can be used by many
handlers like, onAbort, onLoad & onError
Question No: 37 ( Marks: 3 )
The event handler attribute consists of three parts.
Write about each of them.
ANS:-
The identifier of the event
handler The equal sign
A string statement enclosed in
double or single quotes.
Question No: 38 ( Marks: 5 )
What is a packet in the network environment? What
kind of information does it contain?
ANS:-
·
Packet is data chopped up into pieces in a
network environment.
·
These packets contain information about which
computer sent the data and where the data is going.
·
If a packet runs into a problem during its
trip, it can attempt to find another route. When all the packets get where they
are going, the recipient computer puts them together again.
Question No: 39 ( Marks: 5 )
Suppose we have a big project. Draw hierarchy of the
people involved in the project?
ANS:-
Please ignore small lines
relating Sub Teams to subordinates due to shortage of time. ABCD etc are
connected directly to Team Lead 1,2 & 3 accordingly.
Question No: 41 ( Marks: 10 )
How instant
messaging works? Write the steps involved in this process.
ANS:-
The Instant Messaging services
available allow us to maintain a list of people (contacts) that we interact
with regularly. We can send instant messages to any of the contacts in our list
as long as that contact is online.
Following steps are involved in
IM working.
1. User
commences the IM client.
2. IM
client finds the IM server & logs in.
3. It
launches communication info (IP address, etc) to the IM server.
4. IM
server finds user’s contacts & sends him/her the communication info.
5. IM
server also notifies the contacts that the user is online; sends his/her
communication info to them.
6. The
user’s & the contact’s IM clients are ready to communicate directly (P2P).
7. As new
contact has come online, IM server informs them about the user being online
& vice versa.
8. Multiple,
real-time chat are possible.
9. When
the user logs-off, his/her IM client informs the IM server.
10. IM
server wipes away the temporary file and informs the user’s contact’s about
his/her ‘offline’ status.
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