Routing protocol is used to dynamically learn routing information so routers know where to send packets. The only other option is to manually define all routers within a network which would be very impractical.
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Transmission Control Protocol (TCP) is used when data reliability is needed since it is connection oriented and guarantees delivery.
Technically, there is no such thing. The routing table has several entries (think of them as lines); the individual LINES in the routing table can be static or dynamic; and the routing table in its entirety can have both types. A static entry is programmed (hard-coded) by a network administrator. A dynamic entry is one which the router learns from a routing protocol, such as RIP, EIGRP, OSPF, BGP, etc. The routers "talk" to one another, and tell one another that they have routes to certain networks; the router that receives such updates will update its routing table as a result. Such entries are temporary, and expire after a relatively short time.
- In your own words, define the term 'protocol' and what is the difference between protocol and protocol suite
The FastEthernet interface of R1 is disabled. One of the default routes is configured incorrectly. A routing protocol is not configured on both routers. The default gateway has not been configured on both routers.
It helps prevent people from gaining access to information they're not cleared to access. The Secret Internet Protocol Routing Network (SIPRNET) contains classified information. Wires for the SIPRNET are marked so don't even think about touching them, let alone accessing the network, without proper clearance. The Non-classified Internet Protocol Routing Network (NIPRNET) is roughly equivalent to your home network in terms of security; only non-classified information should exist on the network.