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21. Explain Proxy ARP
It is using a router to answer ARP requests. This will be
done when the originating host believes that a destination is
local, when in fact is lies beyond router.
22. Explain OSPF
It is an Internet routing protocol that scales well, can
route traffic along multiple paths, and uses knowledge of an
Internet's topology to make accurate routing decisions.
23. Explain Kerberos
It is an authentication service developed at the Massachusetts
Institute of Technology. Kerberos uses encryption to prevent
intruders from discovering passwords and gaining unauthorized
access to files.
24. Explain a Multi-homed Host
It is a host that has a multiple network interfaces and that
requires multiple IP addresses is called as a Multi-homed Host.
25. Explain NVT (Network
Virtual Terminal)
It is a set of rules defining a very simple virtual terminal
interaction. The NVT is used in the start of a Telnet session.
26. Explain Gateway-to-Gateway protocol
It is a protocol formerly used to exchange routing
information between Internet core routers.
27. Explain BGP (Border
Gateway Protocol)
It is a protocol used to advertise the set of networks that
can be reached with in an autonomous system. BGP enables this
information to be shared with the autonomous system. This is
newer than EGP (Exterior Gateway Protocol).
28. Explain autonomous system
It is a collection of routers under the control of a single
administrative authority and that uses a common Interior Gateway
Protocol.
29. Explain EGP (Exterior
Gateway Protocol)
It is the protocol the routers in neighboring autonomous
systems use to identify the set of networks that can be reached
within or via each autonomous system.
30. Explain IGP (Interior
Gateway Protocol)
It is any routing protocol used within an autonomous system.
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