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Spring
2019
PROGRAM
BACHELOR
OF SCIENCE IN INFORMATION TECHNOLOGY - B.SC(IT)
SEMESTER
IV
SUBJECT
CODE & NAME
BIT401–
HUMAN COMPUTER INTERFACE
Assignment
Set - 1
Q.1 What is the importance of
good user interface design? 10
Answer-
Importance
of Good Design-
It is important for any web designer to design
functional sites that can easily generate interest and online traffic among the
internet users. The user interface design of your site plays an vital role in
bringing high volume web traffic to it. Therefore, web designers should give
due importance to the user interface of the site which is being designed by
them. In the present era, there is an explosive growth in the e-commerce with
billions of dollars worth of sales taking place each year. Today, thousands of
businesses
Q.2 Summarize the characteristics
of Windows.
Answer:
The following are the characteristics of the
windows:
·
A name or title, allowing it to be identified.
·
A size in height and width (which can vary).
·
A state, accessible or active, or not accessible.
(Only active windows can have their contents altered.)
·
Visibility—the portion that can be seen. (A window may
be partially or fully hidden behind another window, or the information within a
window may extend beyond the window’s display area.)
·
Q.3 Discuss about Handwriting
Recognition in brief.
10
Answer-
Handwriting
Recognition-
Handwriting recognition (or HWR) is the ability of a
computer to receive and interpret intelligible handwritten input from sources
such as paper documents, photographs, touch-screens and other devices. The
image of the written text may be sensed "off line" from a piece of
paper by optical scanning (optical character recognition) or intelligent word
recognition. Alternatively, the movements of the pen
Assignment Set - 2
Q.1 State some of the models that may be
considered for user interface modeling are?
10
Answer-
User
interface modeling is a development technique used by computer application
programmers. Today's user interfaces (UIs) are complex software components,
which play an essential role in the usability of an application. The
development of UIs requires therefore, not only guidelines and best practice
reports, but also a development process including the elaboration of visual
models and a standardized notation for
Q.2 Discuss the advantages and disadvantages of
trackball.
10
Answer-
A trackball is a pointing device works similar to
the mouse and provide maximum output in less space. There are balls on the top
and sides of the trackball. And, you have to use these balls for proper
functioning or fulfilling the requirements of using the System. Trackball found
in different shapes, sometimes, you have to use your thumb to go for a specific
position in Windows. Therefore, we must say that shape and
Q.3 Discuss the direct and indirect methods of
requirement analysis.
Answer:
Direct
Methods
The
noteworthy preferred advantages of the Direct Method is the open door they give
to hear the client's remarks face to face and firsthand. Individualto-
individual experiences allow numerous channels of
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Spring
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PROGRAM
BACHELOR
OF SCIENCE IN INFORMATION TECHNOLOGY - B.SC(IT)
SEMESTER
IV
SUBJECT
CODE & NAME
BIT402–
WEB SYSTEMS AND TECHNOLOGY
Assignment
Set - 1
Q.1
Write short notes on Client Server. 10
Answer-
The client-server model
describes how a server provides resources and services to one or more clients.
Examples of servers include web servers, mail servers, and file servers. Each
of these servers provide resources to client devices, such as desktop
computers, laptops, tablets, and smartphones. Most servers have a one-to-many
relationship with clients, meaning a single server can provide resources to
multiple clients at one time. When a client requests a connection to a server,
the server can either accept or reject the connection. If the connection is
accepted, the server establishes and maintains a connection with the Its half solved only
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Q.2 Write short notes on DOM (Document Object
Model). 10
Answer-
Introduction to DOM (Document Object
Model)
The
Document Object Model is a platform- and language-neutral interface that will
allow programs and scripts to dynamically access and update the content,
structure and style of documents. When we see a document using a browser, DOM
presents documents as a hierarchy of HTML or XML objects in the document. This
hierarchy structure makes it possible for programmers or browsers to access and
delete, add, or edit
Q.3 Discuss Architecture of Web based
System.
10
Answer-
Architecture of Web based System-
The Web as an environment has become attractive to
solution providers and regular users because of the principles of openness,
simplicity, and ubiquity on which it is found. The principle of openness has to
do with the fact that the Web is based on a set of open standards, certified by
a general standardization body such as the World Wide Web Consortium (WWW). The
principle of openness means: free access to open standards, the possibility to
propose changes or completely new standards, royalty-free use of the Web and
application deployment. In the Web environment everyone is a potential user.
With very little or almost no prior training each of us should be in a position
to make use of its full
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Spring
2019
SEMESTER- FOURTH
SUBJECT CODE & NAME- BIT403- PROBABILITY AND STATISTICS
Q1. Three machines A, B and
C produce respectively 60%, 30% and 10%
of the total number of items of a factory. The percentage of defective output
of these machines are respectively 2%, 3% and 4%. An item is selected at random
and is found to be defective. Find the probability that the item was produced
by machine C.
Solution: Let P(A), P(B) and P(C) denote the
probabilities of choosing an item produced by A, B, C respectively.
Also, let P(X/A), P(X/B), P(X/C) denote the probabilities of choosing a
defective item from the outputs of A, B, C respectively. Then, from what is
given
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Q3. The data shows the distribution of weight of students of
1st standard of a school. Find the quartiles.
|
Class Interval
|
13 - 18
|
18 - 20
|
20 - 21
|
21 – 22
|
22 - 23
|
23 - 25
|
25 – 30
|
||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Frequency
|
22
|
27
|
51
|
42
|
32
|
|
16
|
10
|
|||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Solution:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||
|
|
Class interval
|
|
Frequency
|
|
Cumulative frequency
|
|
|||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
13
|
– 18
|
|
|
22
|
|
|
22
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
18
|
– 20
|
|
|
27
|
|
|
49
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
20
|
– 21
|
|
|
51
|
|
|
100
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
21
|
– 22
|
|
|
42
|
|
|
142
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Q4. Fit a trend line to the following data by the freehand
method:
|
Year
|
Production
of wheat
|
Year
|
Production
of wheat
|
|
|
(in
tonnes)
|
|
(in
tonnes)
|
|
|
|
|
|
|
1995
|
20
|
2000
|
25
|
|
|
|
|
|
|
1996
|
22
|
2001
|
23
|
|
|
|
|
|
|
1997
|
24
|
2002
|
26
|
|
|
|
|
|
|
1998
|
21
|
2003
|
25
|
|
|
|
|
|
|
1999
|
23
|
2004
|
24
|
|
|
|
|
|
Solution:
Graphical
representation of trend line relating to the production of wheat by the
method of free hand curve is shown in figure
Q5. Let X be a random variable and its probability mass
function is 
find the m.g.f. of X and hence its mean and
variance.
find the m.g.f. of X and hence its mean and
variance.
Solution: By definition,
Q6. The diastolic blood pressures of men
are distributed as shown in table. Find the standard deviation and
variance.
|
Pressure(men)
|
78-80
|
80-82
|
82-84
|
84-86
|
86-88
|
88-90
|
|
|
|
|
|
|
|
|
|
No. of Men
|
3
|
15
|
26
|
23
|
9
|
4
|
|
|
|
|
|
|
|
|
Solution:
The table represents
the frequency distribution of data required for calculating the standard
deviation.
|
Class
|
Mid
|
Frequency
|
x-83
|
d = (x-
|
d²
|
fd
|
fd2
|
|
Interval
|
value
X
|
‘f’
|
|
83)/2
|
|
|
|
|
|
|
|
|
|
|
|
|
|
78-80
|
79
|
3
|
-4
|
-2
|
4
|
-6
|
12
|
|
|
|
|
|
|
|
|
|
|
80-82
|
81
|
15
|
-2
|
-1
|
1
|
-15
|
15
|
|
|
|
|
|
|
|
|
|
|
82-84
|
83
|
26
|
0
|
0
|
0
|
0
|
0
|
|
|
|
|
|
|
|
|
|
Its half solved only
New
smu SPRING 2019 solved assignments available with us
LAST
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08273413412 (both whatsapp no)
DRIVE
Spring 2019
PROGRAM
BACHELOR OF SCIENCE IN INFORMATION TECHNOLOGY - B.SC(IT)
SEMESTER
IV
SUBJECT CODE & NAME
BIT404– SOFTWARE ENGINEERING
Assignment Set -
1
Q.1 What are the principles of software
engineering?
10
Answer-
Principles
of Software Engineering-
Alan
Davis (1994) is one of the earlier authorities to bring forward a set of
principles that underlie software engineering. Below are some principles of
software engineering:
·
Give
products to customers early: In this principle, it is very difficult to
completely understand and capture the user’s needs during the requirement
phase; thus it is more effective to
Q.2 Discuss the different phases of software
engineering 10
Answer-
Phases
of Software Engineering
In
the engineering domain, developing a solution to a given problem involves a
sequence of interconnected steps, whether building a bridge or making an
electronic component. These steps or phases occur in software development as
well. The series of steps involved in developing the product is called the
Software Development Life Cycle (SDLC). There are seven phases or stages in
SDLC, which are
Q.3 Discuss briefly about waterfall
model.
10
Answer-
The Waterfall
Model was first Process Model to be introduced. It is very simple to understand
and use. In a Waterfall model, each phase must be completed before the next
phase can begin and there is no overlapping in the phases. Waterfall model is
the earliest SDLC approach that was used for software
Assignment Set - 2
Q.1 Discuss software characteristics.
10
Answer-
Software
is defined as a collection of programs, documentation and operating procedures.
The Institute of Electrical and Electronic Engineers (IEEE) defines software as
a 'collection of computer programs, procedures, rules and associated
documentation and data.' It possesses no mass, no volume, and no colour, which
makes it a non-degradable entity over a long period. Software does not wear out
or get tired.
Q.2 Define software maintenance. List and
discuss the different types of software maintenance. 2+2+6
( 10 )
Answer-
Definition: Software maintenance is a part of
Software Development Life Cycle. Its main purpose is to modify and update
software application after delivery to correct faults and to improve
performance. Software is a model of the real world. When the real world
changes, the software requires alteration wherever possible.
Types of Software
Q.3 Describe the objectives of Software
Engineering . 10
Answer-
Over
the last 50 years there has been revolutionary advancement in the field of
technology, leading to improvements in hardware performance and profound
changes in computing architectures. This advancement has led to the production
of complex computer-based systems that are capable of providing information in
a
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2019
PROGRAM
BACHELOR
OF SCIENCE IN INFORMATION TECHNOLOGY - B.SC(IT)
SEMESTER
IV
SUBJECT
CODE & NAME
BIT405-WEB
PROGRAMMING - I
Assignment Set -
1
Q.1 Write short notes on Internet Service
Providers. 2+2+3+3
Answer-
Internet
Service Providers-
An Internet Service
Provider (ISP) is an organization or business offering public access to the
Internet. It is your gateway, to the Net. You have to subscribe to a provider
your Internet connection. You use your computer and modem to access the
provider’s system and the provider handles the rest of the details of
connecting you to the Internet. There are many types of Internet providers. You
can, for instance, choose one of big commercial online service providers. The
primary business of an ISP is hooking people to the Internet by giving an
Internet account to subscribers, and providing them with two different kinds of
access: Its
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Q.2 What is Markup Language? 10
Answer-
A
markup language is a language that annotates text so that the computer can
manipulate the text. Most markup languages are human readable because the
annotations are written in a way to distinguish them the text. Markup languages
are designed for the processing, definition and presentation of text. The
language specifies code for formatting both the layout and style, within a text
file, the code used to
Q.3 Gives examples for creating, reading and
deleting files. 3 +7
Answer-
Examples for creating, reading
and deleting files-
Creating
Files
1.
Create a variable to hold full path name to a file
$
filename= "c;/newfile.text";
2.
create a file
Assignment Set -
2
Q.1 Write short notes on DNS and DNS
servers. 10
Answer-
On
a TCP/IP network, computers know each other by their IP addresses. But for
human beings, remembering numbers is not the easiest thing to do. Remembering
names is much easier. Similarly, a way was devised to associate IP addresses
with names that can be easily remembered. In the early days of the Internet,
“hosts” files were used to associate machines with names. The hosts file is
simply a table of IP
Q.2 Write short notes on SGML. 2+2+6
Answer-
Standard
Generalized Markup Language (SGML)
Around
the world today, the need for information is strongly felt. Information needs
to be created, distributed, accessed and utilized for a complete revolution to
be made in any sector of the nation. Hence, there comes the need to accurately
manage information
Q.3 Describe briefly about Cascading Style
Sheet. 10
Answer-
Cascading Style Sheet
CSS is
used to style HTML elements such as layering and positioning the content. CSS
is designed primarily to enable the separation of document content from
document presentation. This separation can improve content accessibility,
provide more flexibility and control in the specification of presentation
characteristics, and reduce complexity and repetition in the structural
content. Some of the tags of HTML, for
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