mca5043 smu mca summer 2017 (oct/nov 2017 exam) Vth sem assignment

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PROGRAM-MCA(Revised Fall 2012)

SEMESTER-V

SUBJECT CODE & NAME-MCA5043– Data Warehousing and Data Mining

CREDIT-4

BK ID-B1633

MAX. MARKS-60

1. Explain the Functionalities and advantages of Data Warehouses. 5+5

Answer.

Functionalities and advantages of Data Warehouses

Functionalities

A data warehouse functions as a repository for all the data held by an organisation. The main functions are to reduce cost of data storage, facilitate data mining, and facilitate ability to back up data at an organisational level. A data warehouse is the main repository of an organization's historical data, its corporate memory.  A data warehouse is a

2 Explain the Top-Down and Bottom-up Data Warehouse development Methodologies.

Answer: Despite the fact that Data Warehouses can be designed in a number of different ways, they all share a number of important characteristics. Most Data Warehouses are Subject Oriented. This means that the information that is in the Data Warehouse is stored in a way that allows it to be connected to objects or event, which occur in reality. Another characteristic that is frequently seen in Data Warehouses is called Time Variant. A time variant Data Warehouse will allow changes in the information to be monitored and recorded over time. All the programs that are used by a

3. Describe about Hyper Cube and Multicube 5+5

Answer.

Hyper Cube and Multicube

Multidimensional databases can present their data to an application using two types of cubes: hypercubes and multicubes.

4. List and explain the Strategies for data reduction. 5*2

Answer.

Strategies for data reduction

Data reduction: Obtain a reduced representation of the data set that is much smaller in volume but yet produces the same (or almost the same) analytical results.

Why data reduction? —

5. Describe K-means method for clustering. List its advantages and drawbacks. 5+5

Answer.

K-means method for clustering

k-means clustering is a method of vector quantization, originally from signal processing, that is popular for cluster analysis in data mining. k-means clustering aims to partition n observations into k clusters in which each observation belongs to

6. Describe about Multilevel Databases and Web Query Systems 5+5

Answer.

Multilevel Databases and Web Query Systems

Multilevel Databases

A multilevel database system (MDBMS) supports the application of a multilevel policy for regulating access to the database objects. In

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mca5041 smu mca summer 2017 (oct/nov 2017 exam) Vth sem assignment

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Mca5041

summer 2017

1 What is reflective middleware? Write its advantages.

Answer: Reflective middleware is also known as component-based middleware. A component is termed as a program that performs a particular function and is designed in such a manner that it can easily be

2 Define Client/server computing. In Client/server computing, list the responsibilities of client and server.

Answer: Client/server computing is technology that facilitates an organisation to effectively manage its

3 Describe about 3G. What are the typical 3G standards? List few applications used on a 3G network.

Answer: 3G, also called Tri-Band 3G, is a set of standards which is used for mobile telecommunication services and mobile devices related to the IMT-2000 specifications formulated by ITU. This standard is used to offer various services on cell phones, such as video calls, internet

4 Describe briefly:

a) HTTP

b) CGI

c) Servlet

d) RMI

e) Socket

Answer: a) HTTP

The Hypertext Transfer Protocol (HTTP) is a protocol for distributed, collaborative, information systems. In

5 Differentiate between Stateful and Stateless session bean

Answer: Stateful session beans are used where the state of the bean requires to be retained so that the same client can use it for further method invocations. A good example of a Stateful session bean is the shopping cart

6 Explain the different components of the Android operating system. What are native Android applications?

Answer: Some of the components used to develop an Android application are as follows:

·         Activities: It is implemented when an application has a visible user interface (UI).

·         Services: It

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·          

mca5032 smu mca summer 2017 (oct/nov 2017 exam) Vth sem assignment

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PROGRAM - Master of Science in Information Technology(MSc IT)Revised Fall 2011

                                                                 SEMESTER - 4

SUBJECT CODE & NAME – Mca5032- WIRELESS AND MOBILE COMMUNICATION

CREDIT - 4

BK ID - B1485

MARKS – 60

1 Describe any five GSM PLMN basic services.

Answer: 5 GSM PLMN basic services

Dual-Tone multifrequency (DTMF): The automatic answering machines used in wireless telephone network needs a controlling mechanism. For this purpose the GSM PLMN uses a tone signalling service called Dual-Tone Multifrequency. It facilitates subscribers with

Q2. Describe wireless communication. Explain its advantages.

Answer:

Wireless communication is among technology’s biggest contributions to mankind. Wireless communication involves the transmission of information over a distance without help of wires, cables or any other forms of

Q3. Differentiate BSC and MSC protocols. 10

Ans: BSC protocols: Once the information is communicated from the BTS to the BSC, the Abis

interface is used to communicate further the information between the BTS and BSC. At this level, the radio resources at the lower portion of Layer 3 are handled by the Base Transceiver Station Management (BTSM) protocol rather than the RR protocol. The BTSM layer acts as a relay function at the BTS to communicate to the BSC in the GSM architecture. The major

Q4. What is CDMA? Explain the history of CDMA. 4+6 = 10

Ans: CDMA : we will be introduced to the concept of CDMA, its channel concept and its operation. Code Division Multiple Access technology emerged as an alternative to the GSM cellular architecture. Frequency reuse is an important concept in wireless systems, particularly cellular systems. Propagation losses allow frequency bands to be reused in geographically separated locations. Code Division Multiple Access (CDMA) is a cellular technology and it acts an important driving force for wireless networks around the globe. CDMA is the development hotspot in many countries around the world and is an advanced multi-access mode, with a broad application perspective. It competes with GSM technology for dominance in the cellular world. CDMA belongs to third generation of cellular networks there are now different variations, but

Q5. Explain the following: a) A5 algorithm for encryption b) A8 algorithm for key generation 10

Ans: A5 Algorithm – An A5 encryption algorithm scrambles the user's voice and data traffic between the handset and the base station to provide privacy. An A5 algorithm is implemented in both the handset and the base station subsystem (BSS). This algorithm is used to encipher and decipher the data that is being transmitted on the Um interface. The Kc (ciphering key) and the

plaintext data are inputted

Q6. List and explain the different path loss models. 10

Ans: Path Loss Models: Path loss models describe the signal attenuation between a transmit and a receive antenna as a function of the propagation distance and other parameters. Some models include many details of the topography profile to estimate the signal reduction, whereas others just consider carrier frequency and distance. Path loss is the reduction in power density of an electromagnetic wave as it propagates through space. It is a major component in the analysis and design of the link budget of a telecommunication

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mca5031 smu mca summer 2017 (oct/nov 2017 exam) Vth sem assignment

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DRIVE

Summer 2017

PROGRAM

MCA(REVISED FALL 2012)

SEMESTER

5

SUBJECT CODE & NAME

MCA5031-PRINCIPLES OF MULTIMEDIA

1 Briefly explain HTML. What are the essential features of HTML?

Answer: The prefix hyper- (comes from the Greek word which means "over" or "beyond") signifies the overcoming of the old linear constraints of written text. Hypertext is a type of formatted text that enables a related set of documents called pages to be created which contains links to other pages referred to as hyperlinks. For example, most universities describe their structure and the courses and facilities offered by them in a brochure known as prospectus. Now the

2 What is a Multimedia System? Explain any four Properties of a Multimedia System

Answer: In the application of multimedia, every type of multimedia information has to be represented, stored, transmitted and processed digitally. Therefore a Multimedia System is a system capable of processing multimedia data and applications. A computer capable of handling text, graphics, audio,

3 Differentiate between Bitmap graphics and Vector graphics

Answer: Bitmap graphics, also known as "raster graphics," are composed of very small dots (pixels) of the same or different color that are placed so closely to each other that the human eye perceives them not as dots, but as a picture(for example, a photograph). So bitmap image is a matrix (grid) of digital picture elements (pixels). Pixels are squares or rectangles described as black, white, gray, or

4 Differentiate between filed mode and frame mode.

Answer: The application for which MP@ML is purposed is for digital television broadcasting. Hence interlaced scanning is used with a frame refresh rate of 30Hz for NTSC and 25Hz for PAL. The 4:2:0 digitization

5. Explain the various hardware components required for Multimedia Applications. 4*2.5

Answer.

Hardware Components required for Multimedia Applications

To develop the system of multimedia the various hardware components required are:-

CPU:

6. What are the different types of multimedia servers? Explain. 5+5

Answer.

Types of multimedia servers

The multimedia server is where all the multimedia information or content is stored. That is why they are also called information provider. The multimedia server is responsible for managing multimedia databases and also composing general multimedia objects for the user. The composition

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mca5020 smu mca summer 2017 (oct/nov 2017 exam) Vth sem assignment

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Summer 2017 ASSIGNMENT

PROGRAM-MCA(REVISED FALL 2012)

SEMESTER-V

SUBJECT CODE & NAME-MCA5020-ADVANCED SOFTWARE ENGINEERING

CREDIT-4

BK ID-B1636

MAX. MARKS-60

Qus: 1 List any ten major principles of agile software.

Answer.

 Principles of agile software:

The major principles of agile software are:

·         Satisfying the customers with early and continuous delivery of valuable software is agile software’s major priority.

·         Welcoming varying requirements, even during the later phases of development. Agile processes also support change for the customer’s competitive benefit.

·         Delivering working software often, with a shorter timescale is preferred.

·         Involving business people and developers in development of agile process and making them work together every

Qus:2 What do you mean by product life cycle? Explain the seven stages of product life cycle

Answer:

Product life cycle:

A series of steps is required to manufacture a product..The product developed should satisfy the customer. The series of steps involved in developing the product is called the product life cycle.

The stages of

Qus: 3. List the four developer practices of XP. Explain briefly about Adopt test-driven development

Answer:

Developer practices of XP:

XP values and the significance of time and resource for an XP practitioner. As a development model, the XP empowers the developers and stakeholders, associated with the project, to successfully carry out the project and develop efficient software. However, just like any other programming model, even in the XP, you must follow certain practices to utilize the model to its fullest capacity. The 12 practices of XP are

Qus:4. Briefly explain about tracker and coach in XP.

Answer.

Tracker and coach in XP:

Tracker:

A tracker is a person who keeps track of the schedule. A tracker can be a manager or a trusted developer. XP keeps track of certain metrics that include team velocity. This is the ratio of ideal time estimated for accomplishing a task to the actual time spent implementing them. The tracker also includes other data such as change in velocity, overtime worked, and the ratio of passing tests to failing tests. It is the responsibility of the tracker to prepare good estimates of the tasks. Preparing good estimates is a

Qus:5. Explain XP prerequisites.

Answer.

XP prerequisites:

The following are the prerequisites for adopting XP:

Ø  Team agreement

Qus:6. List and explain any five basic principles of DSDM

Answer:

Principles of DSDM:

DSDM consists of nine basic principles. These principles form the cornerstones of development using DSDM and direct how development progresses. Ignoring any one of them will break with the frameworks

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