Questions: 1) How does multimedia transmission differ than \'message\' transmission? 2) Describe compression and include the different types used in multimedia. Solution 1) Message transmission includes the standard text communication using standard communication protocols. Here the messages are generally short and fixed in length. Message Service Centres (MSCs) are responsible for sending and receiving of messages. These messages are stored and forwarded and in case of any failure, they are queued for resending. The message if successfully sent, is then discarded from storage. Multimedia transmission is a way to send messages that includes multimedia content like images, music or video files. Message Service Centres along with carriers are responsible for successful sending and receiving of messages. Carriers are mainly used to change the format of the Multimedia message because the formats supported on different targeted devices are different. Internet is required to transfer multimedia messages between carrier and carrier. If the target device does not support multimedia, these messages can be viewed on the browser through an URL send as text message. 2) Compression is reduction in size of a file by reducing the number of bits that are used to represent without any loss of data. Generally, compression is employed to save storage space and increase the pace of file sending over a network which in turn saves bandwidth. An algorithm is used to compress a file. Multimedia compression techniques are classified as Lossy Compression: These recover the somewhat a similar representation to the original file. They have high compression ratios and used more practically. Examples of Lossy compression techniques are Lossless Compression: These techniques recover the original file. Examples of lossless techniques are.