MI0035 - COMPUTER NETWORKS

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ASSIGNMENT

DRIVE	SUMMER  2014
PROGRAM	PROGRAM/SEMESTER -MBADS (SEM 3/SEM 5) MBAFLEX/ MBAN2 (SEM 3) PGDISMN (SEM 1)
SUBJECT CODE & NAME	MI0035- COMPUTER NETWORKS
SEMESTER	3
BK ID	BK ID -B1481
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.

Q.1. Write short notes on:

a. LAN

b. Analog and digital data transmission

c. High level data link control

Ans : a)   Local Area Network (LAN):

These types of computer networks connect network devices over a relatively short distance. Quite often, a networked office building, home or school contains a single LAN although it is normal to come across a building that

b. Analog and digital data transmission :

Analog data transmission:

Analog (or analogue) transmission is a transmission method of conveying voice, data, image, signal or video information using a continuous signal which varies in amplitude, phase, or some other property in proportion to that of a variable. It could

c. High level data link control:

High-Level Data Link Control (HDLC) is a bit-oriented code-transparent synchronous data link layer protocol developed by the International Organization for Standardization (ISO). The original ISO standards for HDLC are:

ISO 3309 – Frame Structure

Q2. Videoconferencing is used to conduct meetings with the people who are located in far distance. Videoconferencing is an example of which type of computer networks? Explain in detail the different types of networks with example.

Answer :Videoconferencing type :

The wide area network (WAN) is a critical component of the infrastructure supporting video conferencing

Conducting a conference between two or more participants at different sites by using computer networks to transmit audio and video data. For example, a point-to-point (two-person) video conferencing system works much like a video telephone. Each participant has a video camera, microphone, and speakers mounted

Q3. A protocol helps in establishing the communication between two systems. Protocols are mainly divided into asynchronous and synchronous protocols. List and describe in detail the different types of protocols that are classified under the two main protocols.

Answer : Different types of protocols :

Two main classes of protocols are :

File retrieval protocols

This type of service was one of the earliest ways of retrieving information from computers connected to the Internet. You could view the names of the files stored on the serving computer, but you didn't have any type of graphics and sometimes no description of a file's content. You would need to have advanced knowledge of which files contained the information you sought.

FTP (File Transfer Protocol)

Q.4. Integrated Services for Digital Network (ISDN) is a set of communication standards for

Simultaneous digital transmission of voice, video, data, and other network services over the traditional circuits of the public switched telephone network. It was first defined in 1988 in the CCITT red book. Explain the different types of ISDN with their features and advantages for each one of them. (Explaining Two different types , Features of both of them , Advantages of both of them) 2,4,4

ANS: Different types of ISDN :

Integrated services refers to ISDN's ability to deliver at minimum two simultaneous connections, in any combination of data, voice, video, and fax, over a single line. Multiple devices can be attached to the line, and used as needed. That means an ISDN line can take care of most people's complete communications needs (apart from

Q.5. ABC company is an internet service provider. The main goal of ABC is to provide 24 X7X365 storage capacity, storage management and internet service to the customers. It now needs a solution that will eliminate downtime. Downtime is nothing but the time during which a computer or computer system is down, or inoperative due to hardware or software failure. We also need the flexibility in quick response to both the development in customer base and additional capacity and service demands of the customers. ABC company took the help of network storage infrastructure software provider to achieve their goals by providing support for end to end redundancy and bondless scalability. By creating a scalable storage network with the ability to confidentially deliver the 24X7X365 reliability, and speed that outsourcing customers demand, it has enabled the ISP/SSP to attract and retain customers and substantially build its business. As the same time, the solution has effectively lowered ABC company’s total cost of ownership for its entire storage solution: the IP Stor/CNP union has enabled a painless, flexible cost effective, scalable solution. The complementary IP Stor/CNT solution has allowed to its customers easily and cost- effectively. a. What were the problem which ABC Company was facing before consulting network storage infrastructure software provider?

b. What were the benefits of implementing a scalable storage network?

c. List the different classes of ISPs and their applications.

Ans : The problems faced by ABC Company after reading the SLM

The important issue to address while choosing connectivity solutions is, whether application servers are being connected to storage or disparate networks are being interconnected. The key factors to be considered are elimination of single points of failure, high scalability, and ease of set up. The FalcoStor’s IP Stor software solution, a leading network storage infrastructure software provider, helped ABC Company to achieve their goal by

Q6. How are the different topologies of computer networks arranged? Explain the working of each of them

Answer :Topologies :

Network topology is the arrangement of the various elements (links, nodes, etc.) of a computer or biological network. Essentially, it is the topological structure of a network, and may be depicted physically or logically. Physical topology refers to the placement of the network's various components, including device location and cable installation, while logical topology shows how data flows within a network, regardless of its physical design. Distances between nodes, physical interconnections, transmission rates, and/or signal types may differ between two

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