Mail message format - application layer, Computer Networking

Assignment Help:

Mail Message  Format

When an e mail  is sent from one person  to another  a header containing peripheral information precedes  the body  of the message itself. This contained  information is contained in a series of header lines. The header liens and  the body of the message are separated by a blank line. Each header line contains readable ext consisting of a keyword followed  by  a colon  followed by value. some  of the  keyword  are required and others  are optional. Every header  must have  a from header line and  a to header line  a header may include a subject header line as  well as other  optional header liens  a message header looks like this.

The to field  gives the  address  of the primary recipient. Having multiple recipients is also  allowed. The  cc field gives  the addresses of any secondary recipients. In  terms  of  delivery  there is  o distinction  between  the primary and secondary recipients. The  terms cc ( carbon copy0 is a bit dated  since computers do not use cardoon paper but it is well established. The  Bcc( Billed carbon copy) field is like the cc field except that this  line  is deleted from all the copies  sent to the primary and secondary recipients. This feature  allows people  to send copies to third parties without the primary and  secondary recipients knowing this. The next two  field from and sender tell who wrote and sent  the message  respectively. A line containing  received is added by each message transfer agent along  the way. The  lien contains the agents identify the date and  data and time the message was received and other  information that can be used for finding  bugs in the routing  systems. The return path field is added  by the final message  transfer agent and was intended to tell how to get back  to  the sender.

 


Related Discussions:- Mail message format - application layer

Define about the term - hackers, Define about the term - hackers Every ...

Define about the term - hackers Every time technology updates itself, new techniques evolve. At the same time thieves or intruders (in the information technology line, they are

Data bandwidth requirements, Calculate data bandwidth requirements from and...

Calculate data bandwidth requirements from and to each site.

Hardware sharing - fundamentals of networks , Hardware Sharing  ne...

Hardware Sharing  network  facilitate the  sharing  devices. For  example  instead of giving  each of 10 employees in  department  of the internet  on modern society is har

Sonet frame format - sonet sdh, SONET Frame Format SONET  uses  a basic...

SONET Frame Format SONET  uses  a basic  transmission  rate of STS -1 that  is equivalent to 51.84 mbps. Higher level  signals  are integer multiples of the base rate. For  exa

Security control procedures , a) An Introduction/Overview of Network Securi...

a) An Introduction/Overview of Network Security issues. b) A Risk Assessment  analysis- to include:             Assets                                                         T

Example of the datalink layer, MAC (media access control) and LLC (logical ...

MAC (media access control) and LLC (logical link control) are both layer 2 protocols.

Checksum - transport layer, Checksum This 16 bits field contain  th...

Checksum This 16 bits field contain  the checksum. The  calculation of the   checksum for TCP follows  the same  procedure as the  described for  UDP. However the inclusion

Error detecting code - parity bit, Error Detecting Code - Parity bit: ...

Error Detecting Code - Parity bit: The general idea for achieving error detection and correction is to add some redundancy (i.e., some extra data) to a message, which receiver

Sap is used by the cisco ios for which encapsulation types, "SAP" is used b...

"SAP" is used by the Cisco IOS for which encapsulation types? Ans) Three types:- Ethernet_802.2 Token-Ring FDDI_802.2

Compute the entropy of the source, A statistical encoding algorithm is bein...

A statistical encoding algorithm is being considered for the transmission of a large number of long text files over a public network. Part of the file content is as follows: DOD

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