smu msc it 3 sem spring 2018

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DRIVE
SPRING 2018
PROGRAM
Master of Science in Information Technology (MSc IT)
SEMESTER
3
SUBJECT CODE & NAME
MIT3082 Distributed Operating System

Assignment Set - 1
Q.1 Describe the characteristics of a good process migration mechanism. 10
Answer-
Process Migration is the ability of a system (operating system or user-space program) to transfer processes between different nodes in a network. The motivations behind process migration are to balance load, improve availability, enhance communication performance and ease system administration.

Q.2 Describe any four desirable features of a good message passing system. 6
List the issues in IPC by message passing. 4
Answer-

Features of a Message Passing System
Desirable features of a good message passing system are:

Simplicity
The message passing system should be
easy to use
easy to

Q.3 Mention and describe the communication protocols of RPCs. 1+9
Answer-
communication protocols of RPCs-

Assignment Set - 2
Q.1 Explain the five features of a good global scheduling algorithm. 2x5
Answer-
Features of a Good Global Scheduling Algorithm

1.Scalable: A scheduling algorithm should scale well as the number of nodes increases. An algorithm that makes scheduling decisions by first inquiring the workload from all the nodes and then selecting the most lightly loaded node has poor scalability. This will work fine only when there are few nodes in the system.

Q.2 (a) Explain how stateful servers differ from stateless servers. 5
(b) Describe the three approaches to replication in a distributed file system. 5
Answer-
Stateful Vs Stateless Servers-

The file servers that implement a distributed file service can be stateless or stateful. Stateless file servers do not store any session state. This means that every client request is treated independently, and not as part of a new or existing session. Stateful servers, on the other hand, do store session state. They may, therefore, keep track of which clients have opened which files, current read and write pointers for files, which files have been locked by which clients, etc. The main advantage of stateless servers is that

Q.3 List the characteristics of system-oriented names. Explain the approaches for generating system-oriented names. 6x4
Answer-
Characteristics of System-oriented names

Names are used to designate or refer to objects at all levels of system architecture. They have various purposes, forms, and properties depending on the levels at which they are defined. However, an informal distinction can be made between two basic classes of names widely used in operating systems human oriented names and

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PROGRAM
Master of Science in Information Technology(MSc IT)Revised Fall 2011
SEMESTER
3
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 required to learn/use the software. It should maintain the balance for both novice


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

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 stru

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

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 luc

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

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PROGRAM
Master of Science in Information Technology(MSc IT) Revised Fall 2011
SEMESTER
3
SUBJECT CODE & NAME
MIT307-WEB TECHNOLOGIES
SET 1
Qus:1 Name the three types of pattern in event driven programming. Explain the advantages of event driven programming.
Answer:
In computer programming, event-driven programming is a programming paradigm in which the flow of the program is determined by events such as user actions (mouse clicks, key presses), sensor outputs, or messages from other programs/threads. Event-driven programming

Qus:2 Explain the features of XML. Write important rules for XML declaration?
Answer: XML is popular for many features and few of them are listed here:
1. Easy Data Exchange: In XML, data and markup are stored as text that we can configure. If we like, we can use

Qus:3 Write any four importance of XML Schema. Discuss the steps to create an element with the XML designer.
Answer: Importance of XML schema
Schemas not only describe the permissible content of a document, they can:
XML schema uses XML syntax. When you look at your first XML Schema, probably the most striking

SET 2

Qus:1 Define AJAX. Explain AJAX frameworks components.
Answer: Full form of AJAX is Asynchronous JavaScript and XML . AJAX is not a new programming language, but a new way to use existing standards.
It is a technique,
Qus:2 Describe the five different categories of PHP Operators.
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 it easier to learn them all.


Qus:3 What is meant by control statements in ASP. Explain with suitable example.
Answer: We can make a decision based on user input using an If statement. The If statement tests a condition and if the result is true then it runs the code that follows the If statement but if the result is false then it runs the code after the else statement. Here is an example for when someone enters their
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PROGRAM
Master of Science in Information Technology(MSc IT)Revised Fall 2011
SEMESTER
3
SUBJECT CODE & NAME
MIT3081 High Speed Networks
Set 1
Qus:1 Explain WLAN components.
Answer:
WLAN components
A local area network (LAN) connects computers, printers and other devices to allow sharing of data and resources. LANs are limited to coverage of one location, typically a building, and usually use network cables for connections.

However, needing wires to connect devices can be inconvenient, especially in older buildings. As the name

Qus:2 Describe Multi-server queue using suitable diagrams and equations.
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

Qus:3 What is meant by congestion? List and describe different types of congestion.
Answer: 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

Set 2

Qus:1 In TCP what is timer? Explain any timers that TCP maintains for every connection.
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: 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

Qus:3 With the help of suitable diagram explain Routing Information Protocol (RIP) message format. Mention two benefits and two drawbacks of RIP.
Answer: 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

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PROGRAM
Master of Science in Information Technology(MSc IT)Revised Fall 2011
SEMESTER
3
SUBJECT CODE & NAME
MIT3091 Open Source System
Set 1
Qus:1 Elaborate the various types of Creative Common License.
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

Qus:2 Write a short note on the following:
(a)MIT license.
(b)Advertising clause

Answer:
(a)MIT license.
The Massachusetts Institute of
Technology initially developed a liberal software license which is called as the MIT license, for the release of X Window System source code. You can also call it as X License or MIT/X License or X Window System License .
The MIT license is nearly similar to the BSD (Berkeley Source Distribution) license which was developed at

Qus:3 (a)List any five features of Mozilla Public License.
(b)Comparison among GPL, LGPL, and MPL.
Answer: (a)List any 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
Q2. Open-source is a good choice for companies, Justify it.
Answer: As we have understood how we could join an existing open source project and also end an open source project, let us now learn how we can inculcate an open source culture in a company.
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

Qus:2 Explain the drawbacks of open source and free software licensing.
Answer: As we are aware of the global scenario of open source and free software licenses, let us now understand the issues related to them.
You can observe that the advantages of open source licensing sometime in some situations act as

Qus:3 Discuss Cross licensing.
Answer: 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 holding software patents, under cross licensing, agree to share information about the patented software between them. Instead of blocking each other s

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