Skip to main content

NETWORKING (LECTURE 9)

                                                        MARWARI COLLEGE ,RANCHI

                                                (UNDER RANCHI UNIVERSITY,RANCHI) 

NAME: RAJU MANJHI,PRAKASH KUMAR

SUB: NETWORKING

SEM: CA/IT(IV)

___________________________-____________________________


UDP(USER DATAGRAM PROTOCOL):

The User Datagram Protocol (UDP) is simplest Transport Layer communication protocol available of the TCP/IP protocol suite. It involves minimum amount of communication mechanism. UDP is said to be an unreliable transport protocol but it uses IP services which provides best effort delivery mechanism.

In UDP, the receiver does not generate an acknowledgement of packet received and in turn, the sender does not wait for any acknowledgement of packet sent. This shortcoming makes this protocol unreliable as well as easier on processing.

Features

·        UDP is used when acknowledgement of data does not hold any significance.

·        UDP is good protocol for data flowing in one direction.

·        UDP is simple and suitable for query based communications.

·        UDP is not connection oriented.

·        UDP does not provide congestion control mechanism.

·        UDP does not guarantee ordered delivery of data.

·        UDP is stateless.

·        UDP is suitable protocol for streaming applications such as VoIP, multimedia streaming.

UDP Header

UDP header is as simple as its function.


UDP header contains four main parameters:

·        Source Port  - This 16 bits information is used to identify the source port of the packet.

·        Destination Port  - This 16 bits information, is used identify application level service on destination machine.

·        Length  - Length field specifies the entire length of UDP packet (including header). It is 16-bits field and minimum value is 8-byte, i.e. the size of UDP header itself.

·        Checksum  - This field stores the checksum value generated by the sender before sending. IPv4 has this field as optional so when checksum field does not contain any value it is made 0 and all its bits are set to zero.

 

 

The transmission Control Protocol (TCP): is one of the most important protocols of Internet Protocols suite. It is most widely used protocol for data transmission in communication network such as internet.

Features

·        TCP is reliable protocol. That is, the receiver always sends either positive or negative acknowledgement about the data packet to the sender, so that the sender always has bright clue about whether the data packet is reached the destination or it needs to resend it.

·        TCP ensures that the data reaches intended destination in the same order it was sent.

·        TCP is connection oriented. TCP requires that connection between two remote points be established before sending actual data.

·        TCP provides error-checking and recovery mechanism.

·        TCP provides end-to-end communication.

·        TCP provides flow control and quality of service.

·        TCP operates in Client/Server point-to-point mode.

·        TCP provides full duplex server, i.e. it can perform roles of both receiver and sender.

 


Comments

Post a Comment

Popular posts from this blog

EDP INTRODUCTION

                                                     MARWARI COLLEGE RANCHI                                                (UNDER RANCHI UNIVERSITY ,RANCHI) RAJU MANJHI  DEP. OF B.Sc(CA) ,MCR ________________________________________________________________________________ SEMESTER : VI BCA/IT/BCM  SUBJECT : EDP TOPIC : DEFINITION OF EDP : Entrepreneurship 1.        Concept:            Entrepreneurship is derived from French root, which means to undertake. But people today call it by various names - adventuresome (to start something different from others), risk taking, thrill seeking (much of up’s and down’s), innovating (something new). Hence the word entrepreneurship in today’s concept can be called an event of adventuresome which takes risks, seeks thrills and innovative. I.         According to Higgins: Entrepreneurship is the function of seeking investment and production opportunity, organizing an enterprise to undertake a new function process, raising ca
5 comments
Read more

EDP (LECTURE 3)

MARWARI COLLEGE,RANCHI (UNDER RANCHI UNIVERSITY,RANCHI) NAME : RAJU MANJHI SUB: EDP SEM: VI(CA/IT/CM) ______________________________________________________________________________ Identification of business opportunities. An entrepreneur perceives an   opportunity for marketing a product or service, then he establishes a business unit on the basis of his or her perception, finally he manages his enterprise, expanding, growing or diversifying over a period of time. In order to establish an entrepreneurial system an entrepreneur needs to take following steps for identification of right opportunity. 1)        Search for business idea: The task of promotion begins with the search of suitable business idea and opportunity. The idea may generate from various sources and should be rated to the starting of a new business or taking over an existing business enterprise. The idea should be sound and workable, so that it may be exploited. It should yield suitable return
2 comments
Read more

EDP (LECTURE 4)

MARWARI COLLEGE,RANCHI (UNDER RANCHI UNIVERSITY,RANCHI) NAME : RAJU MANJHI,PRAKASH KUMAR SUB: EDP SEM: VI(CA/IT/CM) ______________________________________________________________________________   MARKET (SURVEY) RESEARCH Marketing research is a comprehensive term covering all forms of research internal & external with collecting, tabulating & analyzing facts & data involving a study of appropriate relationship between production & consumption. The American Marketing Association defines marketing research as the systematic gathering, recording & analysis of data, about the problems relating to the marketing of goods & services. Marketing research involves research techniques & technology in order to satisfy the following requirements: 1.       It should be an orderly investigation of a defined problem. 2.       Appropriate scientific method should be used in conducting such research. 3.       Logical reasoning without
2 comments
Read more