Spring 2019
SUBJECT CODE & NAME
MIT306– Object Oriented Analysis and
Design(OOAD)
SET 1
Qus:1
What is usability testing? Write the rule for developing usability testing.
Answer:
Usability testing, a non-functional testing technique that
is a measure of how easily the system can be used by end users. It is difficult
to evaluate and measure but can be evaluated based on the below parameters:
·
Level of Skill
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Qus:2 What is meant by unified approach?
Describe the steps, methods and tools of unified approach.
Answer: Unified approach is a better way for understanding concepts of
objects oriented system
development. Unified approach is a methodology for software development. The unified approach, based on
methodologies given by Booch,
Rum Baugh and Jacobson tries to combine the methods
Qus:3
Describe the various states of activity diagram.
Answer:
Activity diagrams are special cases
of state chart diagrams. An activity diagram has actions as states. It can be
considered as some kind of elaborate flow diagram and has therefore some
graphical structures for handling conditions like a diamond shaped box for
conditionals
SET 2
Qus:1
Discuss the strategies for designing classes.
Answer: The object oriented design process is a complex process. The
following methods can help you design better classes:
1) Analyze the role of the objects
of the class in the application. An object can play any of the following roles:
Value object – These are objects that
basically act as containers of data. They have many properties and lesser
methods (or sometimes no methods).
Display object –
Qus:2
Mention and describe the basic categories of program errors.
Answer: Debugging is a process of finding errors in the code which
cause unexpected results and eliminating them. The process of testing and
identifying bugs is a balance of science, art and luck.
There are three basic categories of
program errors:
1) Syntax errors
2) Run-time errors
Qus:3
Explain the following:
(a)
Black box testing
(b)
White box testing
Answer: (a) Black box testing
This treats the system as one that
cannot be seen in detail. The structure of the program is not taken into
account. The tests are performed based on what the program does. This is
sometimes called functional testing.
The functional requirements have
been agreed with the customer. Thus they can see that the program performs as
it was requested at the specification stage. A main program segment which
passes
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DRIVE SPRING 2019
PROGRAM Master of Science in
Information Technology (MSc IT)
SEMESTER 3
SUBJECT CODE &
NAME
MIT307-WEB TECHNOLOGIES
SET 1
Q.1
List and explain protocols of internet.
2+8
Answer
:
Protocols
of Internet :
The internet is based on a large number of protocols and conventions.
Internet protocols are popular open-system protocol suites. They are used to
communicate across interconnected networks. Each such protocol is explained in
the technical publication called a request for comment (RFC). Some well-known protocol like TCP, UDP and IP
are given below in detail:
TCP (Transmission
Control Protocol
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Qus:2
Explain the advantages of DHTML. 10
Answer:
Advantages
of DHTML :
DHTML is more efficient for content management purposes. By
using the more dynamic XML to create pages, you will be able to import high
volumes of text and other information (with the use of templates) without
spending time coding pages individually. The result of this saves web designers
time because there are less files to maintain. XML has a lot of compatibility
and
Qus:3 How we can link a XML document with DTD?
Explain 10
Answer
:
Linking
your XML document to a DTD
We created a DTD for an XML document, we need to link the
XML to the DTD. This takes place in the prolong of the XML document.
Remember that the prolong starts off with the XML
declaration:
<?xml version="1.0"
encoding="iso-8859-1"?>
Immediately following the XML declaration, we would then
either link to a DTD or write an internal DTD. While DTDs can be both internal
and external, if we are using a DTD for multiple documents, it makes more sense
to have the DTD in a separate "external" file. Otherwise, we will
have to put the full DTD in the prolong of every XML document, rather than just
one line of code
SET 2
Qus.1
Describe various XMLHttpRequest object properties and Methods. 5+5
Answer
:
XMLHttpRequest
object properties and methods :
The XMLHttpRequest object exposes various properties,
methods, and events so script can process and control HTTP requests and
responses.The following table lists the members exposed by the XMLHttpRequest
Qus:2 Describe the five different categories of PHP Operators. 10
Answer:
In all programming languages,
operators are used to manipulate or perform operations on variables and values.
There are many operators used in PHP, so we have separated them into the
following categories to make
Qus3.
Define debugging. Explain fatal and non-fatal bugs in ASP. 2+4+4
Answer:
Debugging
our ASP script
After working with common ASP components, we will be well
versed with the ADRotator component. After completing the development of the
banner rotation system, we are now ready to present it. However, any change in
the name of our ADrotator file is being found. When we load the file we will
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DRIVE
SPRING 2019
PROGRAM
Master of Science in Information
Technology (MSc IT)
SEMESTER
3
SUBJECT CODE & NAME
MIT3081– High Speed Networks
Set 1
Qus.1
Explain WLAN components. 2.5x4
Answer
:
WLAN components :
A wireless LAN (WLAN), also referred to as Local Area
Wireless Network (LAWN), is a flexible data communications system that serves
as an extension to, or as a replacement for, a wired LAN. It uses radio
frequency (RF) technology to transmit and receive data over the air and
minimizes the need for wired connections. The technologies for wireless LANs
are specified by the IEEE 802.11 group of standards. Wireless LAN protocols are
similar to that of Ethernet but do not require
Qus:2
Describe Multi-server queue using suitable diagrams and equations. 10
Answer: The aim of the queuing analysis is to make use of analytic
models to yield the desired
parameters to determine the buffer size. The following two queuing models can be used as analytic models:
● Single
server queue
● Multi-server
queue
In a multi-server queuing system,
multiple servers share a common queue. If a packet arrives and at least one
Qus:3 What is meant by congestion? List and
describe different types of congestion.
Answer:
Congestion :
The
situation wherein network resources are constantly overloaded or the overall
demand of a resource exceeds its capacity is termed as congestion. Congestion
in a network occurs when the load on the network or the number of packets
transmitted to the network is more than the capacity of the network, i.e., the
number of packets a network can handle. Congestion in a network or internetwork
happens as the routers and switches include queues-buffers that contain the
packets prior to and after processing. It damages the quality of service and
also results in
Set 2
Qus:1
In TCP what is timer? List the timers that TCP maintains for every connection
and explain any three.
Answer: In TCP protocol, timers are applied in various positions and
these timers restrain retransmissions
and restrict the hold time for lost packets. Jiffies variable is the basis for all timers. Function pointers in
a timer structure take a
behavior function when initialized. Once the timer ends, this
Qus:2 What is meant by Resource Reservation Protocol (RSVP)? Write any three
salient characteristics. List RSVP traffic types and explain any two.
Answer:
Resource Reservation Protocol (RSVP) :
RSVP is a signaling protocol that
offers reservation setup and control. It enables Integrated Services (IntServ)
which is designed to emulate circuits on the Internet. This is the most complex
QoS technology for
Q.3
With the help of suitable diagram explain Routing Information Protocol (RIP)
message format. Mention two benefits and two drawbacks of RIP. 6+2+2
Answer
:
Routing
Information Protocol (RIP) :
RIP is based on distance vector routing. It implements
vector routing using the following considerations:
● An AS has both routers and networks. While routers have
routing tables, networks don’t.
● The first column of a routing table has the destination
network address.
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SEMESTER
3
SUBJECT CODE & NAME
MIT3083– Software Architecture
Assignment Set - 1
Q.1
Explain the six components of broker architecture. 10
Answer-
A broker component has to be
introduced for better dissociation of clients and servers. Servers have to
register themselves with the broker. The clients and servers communicate
through the broker. Clients access the servers by sending requests through the
broker. Locating the appropriate server, sending the requests to the server and
transmitting results and exceptions back to the clients
Q.2
Describe the four architectural designs for KWIC system. 10
Answer-
The
problem related to KWIC that we are looking into now is put forward by David
Lorge Parnas (a Canadian pioneer of software engineering who formulated the
concept of information hiding in object oriented programming). Following is a
brief definition of the problem: “The KWIC index system accepts an ordered set
of lines, each line is an ordered set of words, and each word is an ordered set
of characters. Any line may be "circularly shifted" by repeatedly
removing the first word and appending it at the end of the line. The KWIC index
system outputs a listing of all
Q.3 Mention the steps involved in
the implementation of the blackboard pattern.
10
Amswer :
Steps involved in the implementation
of the blackboard pattern, which are as follows:
Step 1: The problem has to be defined by:
● Specifying the problem domain and the field of knowledge
necessary to find a solution.
● Scrutinizing the input to the system by identifying special
properties of the input.
● Defining the output of the system.
● Analyzing how the user interacts with the system.
Step 2: The solution space for the problem has to be defined. The
solution space is divided into top-level solutions
Assignment Set - 2
Q.1
(a)Explain how architectural pattern and design pattern differ from each
other. 6
(b)What
are the disadvantages of the Proxy pattern? 4
Answer-
Difference between Architectural
Pattern and Design Pattern
|
Architectural
Pattern
|
Design
Pattern
|
Q.2
(a) Describe the benefits of connectors. 5
(b)
What are the advantages of implicit invocation? 5
Answer-
Benefits
of connectors-
Some
of the advantages of connectors are:
● Connectors are architectural building blocks used to
represent the interactions between components and rules that administer these
interactions.
● They match up to the lines in box line descriptions.
Examples for these include pipes, procedure call, client-
Q.3 Describe the different views
that must be considered while documenting architecture. 10
Answer :
Some views that must be considered
while documenting the architecture are listed below:
● Functional
View: This can be used to outline the
functions that the system must provide. This view can be used to identify the
features, functions, and use cases that are considered important to the
architecture as well as reasons out as to why they are significant to the architecture.
It
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DRIVE
SPRING 2019
PROGRAM
Master of Science in Information
Technology (MSc IT)
SEMESTER
3
SUBJECT CODE & NAME
MIT3091– Open Source System
Set 1
Qus:1
Discuss the different types of Creative Common License. 10
Answer: It is very important to know that the licensable properties
come from an array of sources. The definitions of various proprietary types are
not always apparent. Although every licensing program is exclusive, diverse
areas of the licensing business have specific prototypes in terms of how
Qus:2
Write a short note on the following:
(a)
MIT license. 5
(b)
Advertising clause 5
Answer
:
MIT license :
According to the FSF (Free Software Foundation - a
non-profit organization that raises finances for work on the GNU project), the
MIT license is referred as the X11 license, because MIT has released more
software under many other licenses as well. Note that X11 is the present
edition of the X Window System, which is the actual paradigm graphical engine
for Linux and other
Qus:3 (a)List any five features of Mozilla Public License. 5
(b)Comparison
among GPL, LGPL, and MPL.
5
Answer: (a)
five features of Mozilla Public License.
You can say that the MPL differs
from the GPL in the way it regulates the distribution and licensing of works
SET 2
Q1.
Give reasons why open-source is a good choice for companies. 10
Answer:
Reasons why open-source is a good choice for companies :
Running an open source project or
joining an existing one can also be applied to corporate source where all the
users and contributors are the employees of the company. What changes when
everything is done in the company is that the potential audience is much
smaller and also depending on the company’s culture it will become more
difficult to communicate and work with the other
Qus:2 Explain the drawbacks of open source and free software licensing. 10
Answer:
We can observe that the advantages
of open source licensing sometime in some situations act as disadvantages. Some
of the issues faced in open source and free software licensing are:
● Chain-of-title problem.
● Code contamination penalty.
● Intellectual property
Qus:3
Describe Cross licensing. 10
Answer
:
Cross
licensing :
When two or more companies sign
agreement providing the rights of their intellectual property to the other,
then this agreement is known as the cross licensing agreement. For example, two
companies
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Master of Science in Information
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SEMESTER
3
SUBJECT CODE & NAME
MIT3092– Embedded Systems
Assignment Set - 1
Q.1
Explain the following:
(a)
Hardware and Software interrupts 6
(b)
Interrupt Service Routines 4
Answer-
Sometimes
things will happen in a system when the processor is simply not ready. In fact,
sometimes things change that require immediate attention. Can you imagine,
sitting at your PC, that you were to hit buttons on the keyboard, and nothing
happens on your computer? Maybe the processor was busy, and it just didn’t
check to see if you were hitting any buttons at that time. The solution to this
problem is something called an "Interrupt." Interrupts are events
that cause the microprocessor to stop what it is doing, and handle a
high-priority task first. After the interrupt is handled, the microprocessor
goes back to whatever it was doing before. In this way, we can
Q.2
What is meant by microcontroller? Write the salient features of 8051
microcontroller. 3+7
Answer-
Microcontroller :
A microcontroller is a computer. All
computers -- whether we are talking about a personal desktop computer or a
large mainframe computer or a microcontroller -- have several things in common:
●
All
computers have a CPU (central processing unit) that executes programs. If you
are sitting at a desktop
Q.3 Describe the generation of sine
waves. 10
Answer
:
Generating
a sine wave :
To generate a sine wave, we first
need a table whose values represent the magnitude of the sine of angles between
0 and 360 degrees. The values for the sine function vary from -1.0 to +1.0 for
0- to 360-degree angles. The table values are integer numbers representing the
voltage magnitude for the sine of theta. This method ensures that only integer
numbers are output to the DAC by the 8051 microcontroller. Table 7.1 shows the
angles, the sine values, the voltage
Assignment Set - 2
(a)Define
pipe. Mention operations that can be performed on a pipe. 5
(b)Explain
a message queue. 5
Answer
:
Pipes :
Pipes are kernel objects that
provide unstructured data exchange and facilitate synchronization among tasks.
In a traditional implementation, a pipe is a unidirectional data exchange
facility, as shown in figure. Two descriptors, one for each end of the pipe
(one end for reading and one for writing), are returned when the pipe is
created. Data is written via one descriptor and read via the other
Q.2
Write a short note on the following:
(a)
Instruction level parallelism. 5
(b)
Cache memory with diagram 5
Answer-
Instruction level Parallelism :
A
computer program is, in essence, a stream of instructions executed by a
processor. These instructions can be re-ordered and combined into groups which
are then executed in parallel without changing the result of the program. This
is known as instruction-level parallelism (ILP). Advances in
Q.3
Describe Inter-Integrated Circuit Bus.
10
Answer-
I²C Bus :
I²C (Inter-Integrated Circuit)
generically referred to as "two-wire interface" is a multi-master
serial single-ended computer bus invented by Philips. It is used to attach
low-speed peripherals to a motherboard, Microcontrollers into systems, embedded
system, or cellphone or other electronics. I²C is designed to be low cost and
easy to implement. Common I²C bus speeds are the 100 kbit/s standard mode and
the 10 kbit/s low-speed mode, but arbitrarily low clock frequencies are also
allowed. Recent revisions of I²C can host more nodes and run at faster speeds
(400 kbit/s
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