Mime the multipurpose internet mail extensions, Computer Networking

Assignment Help:

MIME The Multipurpose Internet Mail Extensions

While  the message  headers described in are satisfactory for sending  ordinary  ASCII text they are  not sufficiently Reich for multimedia messages(for example messages with  images audio and video) or for carrying  non ASCII  text formats ( for  example  characters used by language other then English ). To  send  content  other then  ASCII text the sending user agent must include additional headers  in the message.

MIME  defines  five  new message headers as show in table 8. These are described  below  one by one:

1.MIME version simply  identifies the version of MIME.

2.The content description Header is an ASCII string  telling  what is  in the message .

3.The content id heard identifies the content.

4.The content transfer  encoding : Header alerts the receiving user agent that the  message  body  has been ASCII encoded and indicates the type of encoding used. Thus when  a user agent receives a message with these two header if first  uses the  value  of the content transfer encoding heard to convert the message body  to its original non ASCII form and then  uses.

5.The content type header to determine  what  action it should  take on the message  body. Let  take  an example of MIME  message.

From : heena@yahoo.

To : harish@rediff. Com

Subject : Picture of monalisa

MIME : Version  : 1.0

Content  transfer encoding  : base 64

Content   - Type  image  jpeg

 Base 64 encoded date ................

.....................................................

............................ base 64 encoded data)

We  observer form  the above  MIME message  that heena user agent  encoded the JPEG  image  using  base 64 encoding. This is one of the  several encoding techniques  standardized  in MIME for conversion to  an acceptable 7 bit  ASCII format.

When  Harish  reads his mail  with his  user agent his user agent operates on this game  MIME message  when Harish use agent observes the content transfer encoding base64 header line. It proceeds to decode the base  640 encoded message body.

The message  also  includes a content type  image jpeg  header line his  indicates to Harish  user agent that the  message body  should be JPEG decompressed. Finally the message includes the MIME version. Header which indicates the MIME version that  is being  used. In  particular  after the message  header  there is  blank  lien and  then the message body.


Related Discussions:- Mime the multipurpose internet mail extensions

Two routers running igrp to communicate their routes, What must be true for...

What must be true for two Routers running IGRP to communicate their routes? Ans) Similar autonomous system number

Configure the management interface- spanning tree protocol, Configure the m...

Configure the management interface address on all three switches.  S1(config)#interface vlan1 S1(config-if)#ip address 172.17.10.1 255.255.255.0 S1(config-if)#no shutdown

What do you use the aux port for, The auxiliary port is used to link a mode...

The auxiliary port is used to link a modem to for dial backups.

Describe network topology and vpn, Describe Network Topology and VPN Ne...

Describe Network Topology and VPN Network Topology refers to the layout of a computer network. It presents how devices and cables are physically laid out, as well as how they j

What is piggy backing, What is Piggy Backing? A process called piggybac...

What is Piggy Backing? A process called piggybacking is used to get better the efficiency of the bidirectional protocols. When a frame is carrying data from A to B, it can also

What is fiber distributed data interface, FDDI -(Fiber Distributed Data Int...

FDDI -(Fiber Distributed Data Interface) FDDI Basics: FDDI (Fiber Distributed Data Interface) came about because system managers became concerned with network reliability i

Show about alternate mark inversion, Q. Show about Alternate mark inversion...

Q. Show about Alternate mark inversion? Bipolar AMI - Neutral, zero voltage represents binary 0 - Binary 1s symbolized by alternating positive and negative voltages

What is d-amps, What is D-AMPS D-AMPS uses 832 channels (in every dire...

What is D-AMPS D-AMPS uses 832 channels (in every direction) with three users sharing a sole channel. This allows D-AMPS to support up to the 2496 users simultaneously per cel

Network, What are the main features of TCP connections? Why is it said that...

What are the main features of TCP connections? Why is it said that TCP provides full-duplex service?

Assignement, I have an asignement regarding TCP tunning and optimization. C...

I have an asignement regarding TCP tunning and optimization. Can you help?

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