mit106 smu msc it spring 2017 (july/aug 2017 exam) Ist sem assignment

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STUDENT NAME:-

ROLL NO:-

ASSIGNMENT DRIVE - SPRING 2017

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

SEMESTER - I

SUBJECT CODE & NAME - MIT106– Fundamentals of IT & Programming

BK ID B1475 NUMBER OF ASSIGNMENTS, CREDITS & MARKS - 1, 2 Credits & 30 marks

Q. 1 List and describe the classification of computers based on their speed and size. 2 +8 10 

Answer:-

Listing the classification of computers based on their speed and size:-

Computers of all sizes have common characteristics – speed, arithmetical and logical operations, accuracy, reliability, storage, retrieving data and programs, automation, versatility, communications, diligence, feelings,

Q2 Define operating system. Describe the following operating systems: 

a) Linux

b) Mac OS

c) Solaris 1+ 3x3=10

Answer:-

Definition of operating system:-

An operating system is a computer program that accomplishes the hardware and software resources of a computer. At the foundation of all system software, the OS performs basic tasks such as controlling and allocating memory, prioritizing system requests, controlling input and output devices, facilitating networking, and managing files. It may also provide a graphical user interface for higher level functions. The operating system is the most

Q3 Draw a diagram of communication system and explain each component involved in it. 2+8 10

Answer:-

Block diagram is a diagram of a communication system shown in figure below consists of information source, transmitter, channel and receiver blocks

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mca211 smu mca spring 2017 (july/aug 2017 exam) IInd sem assignment

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DRIVE

Spring – 2017

PROGRAM

MASTER OF COMPUTER APPLICATION

SEMESTER

II

SUBJECT CODE & NAME

MCA211 – OPERATING SYSTEM

Set 1

Q1 Differentiate between Sequential access and Direct access methods. 5+5

Answer.

Sequential access and Direct access methods

Sequential access

In this simple access method, information in a file is accessed sequentially one record after another. To process the ith record all the i-1 records previous to i must be accessed. Sequential access is based on the tape model that is inherently a sequential access device. Sequential access is best suited where most of the records in a file are to be processed. For example, transaction files.

Q2 Differentiate between Daisy chain bus arbitration and Priority encoded bus arbitration. 5+5

Answer.

Daisy chain bus arbitration and Priority encoded bus arbitration

There are many ways of addressing the “bus arbitration” problem; three techniques which are often implemented in processor systems are the following: Daisy chain arbitration, priority encoded arbitration and distributed arbitration by self-section. These are also often used to determine the

Q3. Explain LRU page replacement algorithms with an example 4+6= 10

Answer:

LRU page replacement algorithm

The main distinction between FIFO and optimal algorithm is that the FIFO algorithm uses the time when a page was brought into memory (looks back) whereas the optimal algorithm uses the time when a page is to be used in future (looks ahead). If the recent past is used as an approximation of the near

.

Set 2

Q1. Define operating system. Explain any four major functions of operating system 2+8 = 10

Answer: Operating System is a System Software (Set of system programs) which provides an environment to help the user to execute the programs. An operating system (OS) is a software program that manages the hardware and software resources of a computer. A key component of system

Q2 Explain the different process states. 5*2

Answer.

Different process states

A program in execution is a process. A process is executed sequentially, one instruction at a time. A program is a passive entity.

Example: a file on the disk. A process on the other hand is an active entity. In addition to program code, it

Q3 Define Deadlock. Explain necessary conditions for deadlock. 2+(2*4)

Answer.

Deadlock

Deadlock occurs when we have a set of processes [not necessarily all the processes in the system], each holding some resources, each requesting some resources, and none of them is able to obtain what it needs, i.e. to make progress. We will usually reason in terms of resources R1, R2... Rm and processes P1, P2... Pn. A process Pi that is waiting for some currently unavailable resource is said to be blocked.

System Model

The number of resources in a

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bt0068 smu bsc it spring 2017 (july/aug 2017 exam) IInd sem assignment

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DRIVE SPRING 2017

PROGRAM B.SC IT

SEMESTER SECOND

SUBJECT CODE & NAME BT0068, Computer Organization and Architecture

1. What is a digital computer? Explain using a diagram.

Answer: Digital computers use the binary number system, which has two digits: 0 and 1. A binary digit is called a bit. Information is represented in digital computers in groups of bits. By using various coding techniques, groups of bits can be made to represent not only binary numbers but also other discrete symbols, such as decimal digits or letters of the alphabet. By

2 Mention different types of buses. Give a brief explanation about each of them.

Answer: The CPU moves data around the computer on pathways that interconnect it to all the other components on the motherboard. These pathways are called 'buses'.

The internal bus carries data within

3 Using block diagram explain Von Neumann architecture.

Answer: The von Neumann Architecture is based on three key concepts:

1.      Data and instructions are stored in a single read-write memory.

2.      The content of this

4 What is a cache memory and on what principle it is based upon?

Answer: For all instruction cycles, the CPU accesses the memory at least once to fetch the instruction and sometimes again accesses memory to fetch the operands. The rate at which the CPU can execute instructions is limited by the memory cycle time. This limitation is due to the mismatch between the memory cycle

5 Write short notes on I/O modules.

Answer: It is the entity within a computer that is responsible for the control of one or more external devices and for the exchange of data between those devices and main memory and/or CPU. Thus I/O memory must have

� Interface to CPU

6 Using a block diagram explain DMA controller.

Answer: DMA has been a built-in feature of PC architecture since the introduction of the original IBM PC. PC-based DMA was used for floppy disk I/O in the original PC and for hard disk I/O in later versions. PC-based DMA technology, along with high-speed bus technology, is

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bca3050 smu bca spring 2017 (july/aug 2017 exam) IIIrd sem assignment

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PROGRAM - BCA(REVISED FALL 2012)

SEMESTER - 3

SUBJECT CODE & NAME

BCA 3050– Soft Skill - Personality Development

BK ID - B0726

CREDITS - 2

MAXIMUM MARKS – 30

Q1. Discuss the concept and applications of time management and explain recognizing the importance of time. [5+5] = 10

Ans: Concept and Applications of Time Management: Time management is a set of skills, tools, and systems that help you use your time to accomplish what you want in an efficient way. Time is often equated with money, and just as we often find ourselves short of cash, we also find ourselves with short of time. The various applications of Time

Q2. Explain personality. Name its different categories. [5+5] = 10

Ans: Personality – An Explanation: When we talk of personality, we don't mean a person who has charm, a positive attitude towards life, a smiling face, or who has won a beauty contest. When psychologists talk of personality, they mean a dynamic concept describing the growth and development of a person's whole psychological system. The word 'personality' has interesting etymological origins. It can be traced to the Latin word "

Q3. Discuss the Role and Functions of a good leader. [10]

Ans: Role & Functions of a Good Leader: The overall aim of a leader is to achieve the task with the help of his group. To meet the overall aim, the leader has three main objectives :

·         To gain the commitment and cooperation of his team

·         To get the group into action to achieve agreed objectives.

·         To make the best use of the skills, energies and talents of the team

Leadership is a complex process

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bca3040 smu bca spring 2017 (july/aug 2017 exam) IIIrd sem assignment

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PROGRAM - BCA(REVISED FALL 2012)

SEMESTER - 3

SUBJECT CODE & NAME

BCA 3040 – DATA COMMUNICATION

BK ID - B1644

CREDITS - 4

MAXIMUM MARKS – 60

Q1. What is Channelization? Briefly explain three channelization techniques. [2+8] = 10

Ans: Channelization: Channelization is a multiple-access method in which the available

bandwidth of a link is shared in time, frequency, or through code, between different stations. In this section, we discuss three channelization techniques: FDMA, TDMA, and CDMA.

1 Frequency-Division Multiple Access (FDMA): In frequency-division multiple access (FDMA), the available bandwidth is divided into frequency bands. Each station is allocated a band to send its data. In other

Q2. What is modulation? Explain why modulation is required? [5+5] = 10

Ans: Modulation: Modulation is the process of varying one of characteristics (either\

Q3. Write a note on: [5+5] 10

·         Ground Wave Propagation

·         Sky Wave Propagation

Ans: Ground Wave Propagation: Ground wave propagation follows the curvature of the Earth. Ground waves have carrier frequencies up to 2 MHz. AM radio is an example of ground wave propagation. Figure shows the concept of Ground wave propagation

Q4. Briefly explain Nyquist theorem with mathematical representation. [10]

Ans: Nyquist theorem: The Nyquist theorem states that “a signal must be sampled at least twice as fast as the bandwidth of the signal to accurately reconstruct the waveform” In other words, the sampling frequency should be at least twice the highest frequency contained in the signal. It is mathematically represented as

\

Q5. What is Communication System? Briefly explain the important elements of communication system. [4+6] = 10

Ans: Communication: Basically, communication is the process of conveying a message from one person to other or from one place to another place. It is the exchange of ideas, thoughts and feelings between two persons, places or points.

Communication Systems: Communication System is a system or facility capable of providing

information transfer between persons or equipments. The elements used in communication system make communication simpler and faster. The \

Q6. What are the advantages of packet switching over circuit switching? [10]

Ans: Packet switching: In packet switching message is divided into blocks of data called packets.

Each packet is associated with a header before they are transmitted individually through the network. The path taken by each packet to reach their respective destination is depending on the status of links used by switching equipment. The packet-switching network is a distributed

collection of packet-switching nodes. The long-haul \

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