mca6012 smu mca summer 2016 (oct/nov 2016 exam) VIth sem assignment

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ASSIGNMENT

DRIVE                                                           SUMMER 2016

PROGRAM                                                   MCA

(REVISED FALL 2012)

SEMESTER                                                  6

SUBJECT CODE & NAME                       MCA6012-CLOUD DB SYSTEM

BOOK ID                                                       B1963

CREDITS                                                      4

MARKS                                                         60

Note: Answer all questions. Kindly note that answers for 10 marks questions should be approximately of 400 words. Each question is followed by evaluation scheme.

Ques1 Differentiate between cloud and distributed computing.

Ans Cloud Computing is a new term for a long-held dream in terms of utility computing. The origin began with the idea of grid computing, where the resources are used temporarily using remote

Ques2 Discuss the following methods which are enforcing the serialisability by locks.

1. Locking scheduler

2. Two phase locking

Ans Performing locks on a resource is one of the methods that are used toserialise transactions. Any data that is going to be utilised in supportof the transaction will be locked by the process.A lock is used by the

Ques3 Discuss the different services under cloud computing technology.

Ans There are different services you will need to run, depending on your cloud provider and what your organization does. Also, these services will likely affect depends on how your cloud infrastructure deployment.

Identity

The user needs to know where the application is running either it runs on cloud platform or on the individual setup. In

Ques4 Discuss the merits and demerits of cloud storage.

Ans Merits and Demerits of Cloud Storage

There are several advantages of the cloud storage model compared to networked online storage and individual storage. As we know it not easy to access the data stored in the end user device whereas the cloud storage data is handled by the third party. In cloud storage since it is with third party

Ques5 Discuss the need for privacy in cloud computing.

AnsAs all we know it is very clearly understood that private cloud is private to the people those who enrolled and the public cloud is open to general public. The following situation may insist us to understand the importance of privacy for the secured data. Assume that you are a service provider for the retailer, who is managing their digital cards. Where you need to use the public cloud service through which the user can provide information to you.

But once you

Ques6 Explain the role of IT governance. Discuss the benefits of IT governance.

Ans Governance is all about applying policies relating to using services. It’s about defining the organizing principles and rules that determine how anorganization should behave. The word governance derives from the Latin word for “steering”. It is important to have a steering process because, well, it helps to make sure that you stay on the road before diving in, take a step back and look at

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mca5043 smu mca summer 2016 (oct/nov 2016 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 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

2. 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

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? — A

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 the cluster with the nearest mean, serving as a prototype of the cluster. This results in a partitioning of the

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 this approach at the bottom level database the semi structured data is stored in web repositories as hyper text .The  generalizations are extracted at the higher level so as to  organize in structured collections as relational and

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mca3050 smu mca summer 2016 (oct/nov 2016 exam) IIIrd sem assignment

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Summer 2016 ASSIGNMENT

PROGRAM MCA(REVISED FALL 2012)

SEMESTER THIRD

SUBJECT CODE & NAME MCA3050- ADVANCED COMPUTER NETWORKS

CREDIT 4 BK ID B1650 MAX. MARKS 60

Q. No. 1 Describe OSI Model. List and explain its seven layers. 3+7 10

Answer: OSI model

The Open Systems Interconnection (OSI) reference model was defined by the International Standards Organization (ISO) as a first step towards international standardization. In 1995, it was revised and known

Q2. Describe about DWDM. Explain the components of a basic DWDM system 10

Answer: Dense Wavelength Division Multiplexing (DWDM): In previous unit we discussed about WDM (Wavelength Division Multiplexing). It is conceptually similar to frequency division multiplexing. Only difference is, it is purposefully designed for fibre-optic cable to support high data-rate. In the literature, the term dense WDM (DWDM) is often used. This term does not imply a different technology to that used for WDM. In fact, the two terms are used interchangeably. WDM, DWDM are based on the same concept of using multiple wavelengths of light on

Q3. Describe Peak cell rate (PCR) and Sustained cell rate (SCR). 10

Answer: Peak cell rate (PCR): This is the maximum amount of traffic that can be submitted by a source to an ATM network, and is expressed as ATM cells per second. Due to the fact the transmission speeds are expressed in bits per second. It is more convenient to talk about the peak bit rate of a source, i.e., the maximum number of bits per second submitted to an ATM connection, rather than its peak

Q4 Describe the following:

a) Open Shortest Path First (OSPF) protocol

b) Broader Gateway Routing Protocol (BGP) 5+5 10

Answer: a)

Open Shortest Path First (OSPF) protocol

OSPF is a commonly deployed link-state routing protocol. It views the Internet as a star configuration. OSPF incorporates the following concepts to manage the complexity of large internets

Q5 Write short notes on:

a) Cryptography

b) Encryption

c) Decryption

d) Cryptanalysis

e) Cryptology 5*2 10

Answer: a) Cryptography

Most initial computer applications had no or at best, very little security. This continued for a number of years and until the importance of data is truly realized. Until then, computer data was considered

Q6 Differentiate Single server queue and Multi-server queue 5+5 10

Answer:

Single server queue

The important element in a single server queue is the server, which provides services to packets. Different packets arrive at the system to be served. If the server is idle at the time of packet

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mca3040 smu mca summer 2016 (oct/nov 2016 exam) IIIrd sem assignment

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Summer 2016 ASSIGNMENT

PROGRAM MCA (REVISED FALL 2012)

SEMESTER THIRD

SUBJECT CODE & NAME - MCA3040- TECHNICAL WRITING

CREDIT 2 BK ID B0955 MAX. MARKS 30

Q. No. 1 What’s Audience Analysis? Explain its significance in Technical Communication [5+5] [10]

Answer:

Audience Analysis

It's important to determine which of the four categories just discussed the potential readers of your document belong to, but that's not the end of it. Audiences, regardless of category, must also be analyzed in

Q2 Explain the role of a technical editor. Differentiate between Micro and Macro editing. [5+5] [10]

Answer: Role of a Technical Editor:

A technical document, to be effective, requires not only a good writer, but also a good editor. The chief duties of a technical editor are realized when the sections of a technical document are submitted to him. The

Q3 Explain the various phases involved in System Development Life Cycle (SDLC).[5*2] [10]

Answer: SDLC Phases

1. Feasibility

The feasibility study is used to determine if the project should get the go ahead. If the project is to proceed, the feasibility study will produce a project plan and budget estimates for the future stages of

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mca3030 smu mca summer 2016 (oct/nov 2016 exam) IIIrd sem assignment

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Summer 2016 ASSIGNMENT

PROGRAM MCA (REVISED FALL 2012)

SEMESTER THIRD

SUBJECT CODE & NAME MCA3030-LINUX OS

CREDIT 2 BK ID B1563 MAX. MARKS 30

Q1. List any ten commonly used commands along with their functions in Linux. 10

Answer: Commonly Used Commands: In normal Linux installation, we can find hundreds of commands and utilities along with thousands of support files. In spite of their overpowering number and often cryptic names and more cryptic options, several commands are very useful. There are

Q2. Describe about Run levels. Explain different run levels. 3+7 10

Answer:

Runlevels

Runlevels come into picture when a user wants to run some or all installed services. Runlevels are used to define

Q3. Describe the following: 5, 5

a) File encryption

b) Email encryption

Answer: File encryption –Files can be encrypted using the following two approaches:

·         EncFS – ncFS is an encrypted pass-through filesystem implemented in user-space. It performs

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