MIT3031– High Speed Networks

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[ SPRING, 2014 ] ASSIGNMENT

PROGRAM	Master of Science in Information Technology(MSc IT)Revised Fall 2011
SEMESTER	3
SUBJECT CODE & NAME	MIT3031– High Speed Networks
CREDITS	4
BK ID	B1548
MAX. 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. What are the advantages of packet switching over the circuit switching?

Answer:TCP/IP networks route data between hosts in packets and packets and packets from many hosts are interspersed on a link, This is called packet switching.

Packet switching can be contrasted to circuit switching in which a circuit is exclusively dedicated to a session for its duration. The telephone network is a familiar example of circuit switching. A dedicated physical circuit is established between two points from the time a call begins until it ends.

Q. 2. List and explain the advantages of virtual path connection (VPC).

Answer:Virtual paths offer a way of presenting the structure of the folders and files on a Web page or FTP server, largely independent of the content structure on the actual server. Virtual paths allow Web developers to streamline the user experience and avoid exposing the inner workings of a website.

Simplified network architecture: Network transport functions can be separated into those related to an individual logical connection (virtual channel) and those related to a group of logical connections (virtual path). Increased network performance and reliability: The network deals with fewer, aggregated entities. Reduced processing and short connection setup time: Much of the work is done when the virtual path is set up.

Q. 3. Write a note on Network Attached Storage (NAS).

Answer: Network-attached storage (NAS) is a dedicated hard disk storage device that provides file-based data storage services to other devices on the network. A network-attached storage (NAS) device is a server that is dedicated to nothing more than file sharing. NAS does not provide any of the activities that a server in a server-centric system typically provides, such as email, authentication or file management.

Network-attached storage (NAS) is a dedicated hard disk storage device that is set up with its own network address and provides file-based data storage services to other devices on the network.

Q. 4.What are the objectives that are defined for frame relay congestion control?

Answer: Frame relay has evolved from X.25 packet switching and objective is to reduce network delays, protocol overheads and equipment cost. Error correction is done on an end-to-end basis rather than a link -to-link basis as in X.25 switching. Frame relay can support multiple users over the same line and can establish a permanent virtual circuit or a switched virtual circuit.

Performance Parameters

The following parameters are defined by the ITU

Q. 5. What are the seven timers that TCP maintains for every connection? Explain any three.

Answer:It is important to understand TCP if one is to understand the historic, current and future architecture of the Internet protocols. Most applications on the Internet make use of TCP, relying upon its mechanisms that ensure safe delivery of data across an unreliable IP layer below. In this paper we explore the fundamental concepts behind TCP and how it is used to transport data between two endpoints.

The Transmission Control Protocol (TCP) standard is defined in the Request For Comment (RFC) standards document number 793 [10] by the Internet Engineering Task Force (IETF). The original specification written in 1981 was based on earlier research and experimentation in the original ARPANET. The design of TCP was heavily

Q. 6. a) What is Multicasting? Explain.

b) What are the advantages of Multicasting?

Answer:Multicast is communication between a single sender and multiple receivers on a network.Multicast is communication between a single sender and multiple receivers on a network. Typical uses include the updating of mobile personnel from a home office and the periodic issuance of online newsletters. Together with anycast and unicast, multicast is one of the packet types in the Internet Protocol Version 6 (IPv6).

Multicast is supported through wireless data

Dear students get fully solved  SMU MSC IT Spring 2014 assignments

Send your semester & Specialization name to our mail id :

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or

Call us at : 08263069601