Q&A
| Q. | Why are multiplexing and demultiplexing necessary? |
| A. | If TCP/IP did not provide multiplexing and demultiplexing, only one application could use the network software at a time, and only one computer could connect to a given application at a time. |
| Q. | Why would a software developer use UDP for a transport protocol when TCP offers better quality assurance? |
| A. | TCP’s quality assurance comes at the price of slower performance. If the extra error control and flow control of TCP are not necessary, UDP is a better choice because it is faster. |
| Q. | Why do applications that support interactive sessions, such as Telnet and FTP, tend to use TCP rather than UDP? |
| A. | TCP’s control and recovery features provide the reliable connection necessary for an interactive ... |
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