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A Non Broadcast Mode Multiple Access Network is a subnetwork that supports multiple hosts/routers but does not provide an efficient way of sending broadcast frames to all devices attached to the subnetwork. ATM subnetworks are an example of NBMA networks.
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network-byte order
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Internet protocol allow to transport sequences of bytes. These sequences of bytes are sufficient to carry ASCII characters. The network-byte order refers to the Big-Endian encoding for 16 and 32 bits integer. See https://en.wikipedia.org/wiki/Endianness
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NFS
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The Network File System is defined in :rfc:`1094`
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NTP
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The Network Time Protocol is defined in :rfc:`1305`
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OSI
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Open Systems Interconnection. A set of networking standards developed by :term:`ISO` including the 7 layers OSI reference model.
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OSPF
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Open Shortest Path First. A link-state intradomain routing protocol that is often used in enterprise and ISP networks. OSPF is defined in and :rfc:`2328` and :rfc:`5340`
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packet
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a packet is the unit of information transfer in the network layer
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PBL
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Problem-based learning is a teaching approach that relies on problems.
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POP
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The Post Office Protocol (POP), defined :rfc:`1939`, is an application-level protocol that allows a client to download email messages stored on a server.
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remote login
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A service that enables a user to connect to a distant server over the network. Telnet, defined in :rfc:`854` and the BSD rlogin services defined in :rfc:`1282` were popular in the past. They have been deprecated for security reasons and are now replaced by :term:`ssh`.
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resolver
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