Electronic mail - application layer, Computer Networking

Assignment Help:

Electronic Mail

One  of the  most popular internet  services is electronic mail ( e mail). At  the beginning  of the internet era teh message sent by  electronic  mail were short and  consisted of text  only they let people  exchange  quick  memos. Today  electronic  mail is such  more  complex. It allows  a message  to include  text audio  and video  it also  allows one message to sent  to one or more  recipients.

Figure presents a high  level  view of the internet  of the  internet mail  system. It has  three major components user agents mail servers, and  the simple  mail  transfer protocol (SMTP). We now  assume  that a  sender  heena sending an e mail  message  to a recipient Harish. User  agents allow users to read reply to forward save and compose message. When  server when Harish  wants to read a message his user agent retrieves the message from his mailbox in his mail server.

262_electronic mail.jpg

                                                                figure A high  level view of the Internet e- mail system

 

Each recipient  such as harsh  has a mailbox  located in one of the servers. Harish  mail box manages  and maintains the messages that have been sent to him. A  messages  starts its journey in the sender user agent  travels to the sender mail server and travels  to the recipient mail  server where  it is deposited in the recipient mail box  when  box  authenticates Harish  ( with  user name and password).  If Heena serve cannot  deliver mail to  Harish  server Heena  server holds the message in a message  queue  and attempts to transfer the message  later.


Related Discussions:- Electronic mail - application layer

Assignment, Hi Sir. I am Deep. I am studying masters of networking. I have ...

Hi Sir. I am Deep. I am studying masters of networking. I have an assignment which is due on Monday 28 August. Is this possible to make it within 5 days? And also tell me that how

Message passing libraries mpi and pvm, In this part, we shall talk about ab...

In this part, we shall talk about about message passing libraries. In history, various message passing libraries have been available since the 1980s. These executions differed subs

Define directed path, QUESTION (a) Define what you understand by the fo...

QUESTION (a) Define what you understand by the following terms in Network Flows: i) UnDirected Path ii) Directed Path iii) Directed Cycle. iv) Tree In each of th

Explain about lan, What is a LAN? A LAN is a Local Area Network, within...

What is a LAN? A LAN is a Local Area Network, within a single building or a specific confined space. LANs typically comprise only one transmission media type like coaxial cable

Ospf - open shortest path first , OSPF ( open Shortest Path First) Open...

OSPF ( open Shortest Path First) Open shortest  path first  is a routing  protocols  developed for internet protocols networks by the  interior  gateway protocols working group

How is computer networks used in financial services, Q. How is computer net...

Q. How is computer networks used in Financial services? Financial services:   Today's financial services are totally depended on networks. Application includes credit history

Error detection-redundancy, Q. Error Detection-Redundancy? In its p...

Q. Error Detection-Redundancy? In its place of repeating the entire data stream a shorter group of bits may be appended to the end of each unit. Called as -redundancy?

What is groupware server, Groupware addresses the management of semi-struct...

Groupware addresses the management of semi-structured information like text, image, mail, bulletin boards and the flow of work. These Client/Server systems have people in direct co

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd