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Mac OS X 10.5 and 10.6 implement ECN support for TCP. It is controlled using the Boolean sysctl variables net.inet.tcp.ecn_negotiate_in and net.inet.tcp.ecn_initiate_out . [ 20 ] The first variable enables ECN on incoming connections that already have ECN flags set; the second one tries to initiate outgoing connections with ECN enabled.
The SIGTSTP signal is sent to a process by its controlling terminal to request it to stop (terminal stop). It is commonly initiated by the user pressing Ctrl + Z . Unlike SIGSTOP, the process can register a signal handler for, or ignore, the signal.
X2Go is open source remote desktop software for Linux that uses a modified NX 3 protocol. [7] X2Go gives remote access to a Linux system's graphical user interface. It can also be used to access Windows systems through a proxy.
The Hypertext Transfer Protocol uses the keyword "Keep-Alive" in the "Connection" header to signal that the connection should be kept open for further messages (this is the default in HTTP 1.1, but in HTTP 1.0 the default was to use a new connection for each request/reply pair). [8]
IPX/SPX was primarily designed for local area networks (LANs) and is a very efficient protocol for this purpose (typically SPX's performance exceeds that of TCP on a small LAN, [citation needed] as in place of congestion windows and confirmatory acknowledgements, SPX uses simple NAKs). TCP/IP has, however, become the de facto standard protocol.
Packet radio networks rely on the AX.25 data link layer protocol, derived from the X.25 protocol suite and intended specifically for amateur radio use. Despite its name, AX.25 defines both the physical and data link layers of the OSI model. (It also defines a network layer protocol, though this is seldom used.) [10]
The TNC stops processing KISS protocol and returns to its vendor-specific behavior. The command bytes are shown here in Hex , but are sent as bytes, not hex strings. In all cases except the Return command, the high nibble indicates which port (on a multi-port TNC) the command applies to.
The EOT character is used in legacy communications protocols by mainframe computer manufacturers such as IBM, Burroughs Corporation, and the BUNCH.Terminal transmission control protocols such as IBM 3270 Poll/Select, or Burroughs TD830 Contention Mode protocol use the EOT character to terminate a communications sequence between two cooperating stations (such as a host multiplexer or Input ...