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

Classless addressing over classfull addressing scheme, What is the benefit ...

What is the benefit of using classless addressing over classfull addressing scheme?

Explain full duplex data transmission, Q. Explain Full Duplex data transmis...

Q. Explain Full Duplex data transmission? - Have two separate Communication channels as well as use each one for simplex Data traffic (in different directions). - If this is

What is quantum computing, In quantum computing, we use the method of qubit...

In quantum computing, we use the method of qubits, superposition and coherence. A normal bit can be in only two states - 0 and 1. But a qubit it can be in 0, 1, or in the superposi

Why we use numbering frames, Q. Why we use numbering frames? Why numbe...

Q. Why we use numbering frames? Why numbering frames? Stop--and-wait ARQ, 1. Numbering Frames prevents the retaining of duplicate frames.. 2. Numbered acknowled

Frame filtering, FRAME FILTERING:  The very important task a bridge op...

FRAME FILTERING:  The very important task a bridge operates is frame filtering. If both the destination and source are on the same segment, it does not repeat the frame to the

Types of parallel programming, TYPES OF PARALLEL PROGRAMMING There are ...

TYPES OF PARALLEL PROGRAMMING There are several parallel programming models in common use. Some of these are: Message Passing; Data Parallel programming; Shared

Internet architecture, Company seldom uses a single router to connect its e...

Company seldom uses a single router to connect its entire network for two purpose. Because the router must transmit every packet, the processor in a provided router is insuff

Fiber-optic cable as transmission media, Q. Fiber-Optic Cable as transmissi...

Q. Fiber-Optic Cable as transmission media? - Made of glass signals are transmit like light pulses from an LED or laser - Light is as well a form of electromagnetic energy

What are the drawbacks of ethernet cabling, What are the drawbacks of Ether...

What are the drawbacks of Ethernet Cabling? The Ethernet cabling ahs the following drawbacks: 1. Ethernet is not a high-level performer in high-load environments. This proto

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