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

What are routers, What are routers? Routers work to connect two or more...

What are routers? Routers work to connect two or more network segments. These are the most intelligent network devices that store information in its routing table like paths, h

Circuit switched networks, Question 1 Write about                       Ci...

Question 1 Write about                       Circuit Switched Networks                       Packet Switched Networks Question 2 Write about                       Protocol Indep

Explain in brief about the throughput, Explain in brief about the Throughpu...

Explain in brief about the Throughput The medium access control protocol should make as well-organized use as possible of the wireless medium to maximize capacity. Number of

Explain the term- gateway, What is the Gateway A Gateway is a device li...

What is the Gateway A Gateway is a device like a mini or microcomputer capable of operating on a standalone basis but which also gives connection for communication with the oth

Describe the term disaster management as security threats, Describe the ter...

Describe the term Disaster Management as security threats Making and testing backups regularly could be the simplest and easiest of all the security measures. But a new questio

Connection-oriented service, The connection-oriented service process for ne...

The connection-oriented service process for networking is same to the manner in which telephones are used. This is shown as follows: A caller dials a number of the receiver. The

Explain the different types of physical networking, Question 1 Explain the...

Question 1 Explain the different activities carried out on E-Commerce, with appropriate examples Question 2 Explain the core components of E-Commerce in detail with appropria

Distant vector protocols, RIP and IGRP are Distance Vectoring protocols tha...

RIP and IGRP are Distance Vectoring protocols that send their whole routing tables to their neighbours. In some Cisco literature, EIGRP is listed as an 'advanced distance vector

What are the access methods used in lan, What are the Access methods used i...

What are the Access methods used in LAN: i. Switched access: It is used in LANs which are assigned around CBXs. Electronic switching is techniques are used to provide access

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