CS456 Study Guide - Midterm Guide: Data Link Layer, Queuing Delay, Packet Switching
29 Jan 2016
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A link in a circuit-switched network always employs tdm. Dns can work over tcp or udp. A connection-oriented, reliable message transfer service cannot be provided across a connectionless packet network. An application can enjoy reliable data transfer even when it runs over udp. Strict layering of protocols increases flexibility and also improves performance. If a udp client creates a socket and there is no udp server running at the destination address, this will return an error. There is a sequence number field in the udp header. A web server can listen at ports other than 80. A cookie allows an http server to authenticate the http client. Yes if the http client has sent authentication information. Access protocol to send and receive emails. Bit errors (bit flipping) detection is implemented at the: Which of the internet protocol layers performs each of the following: Frame is unit of data at data link layer. Packet is unit of data at network layer.
