Which statement is true about a routing table?
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A. B. C. D.D
The correct answer is D: It contains all accepted routes to all destinations.
A routing table is a database that stores the information necessary for a router to determine the best path to a destination network or host. The routing table contains information about network topologies, routing protocols, and other network characteristics.
In the routing table, each entry corresponds to a destination network or host, and includes information such as the network or host IP address, the next-hop router or gateway, and the interface or interfaces through which the router can reach the destination.
The routing table can contain static routes, which are manually configured by a network administrator, as well as dynamic routes, which are learned automatically by the router through routing protocols such as OSPF, BGP, or RIP.
In contrast to option A, a routing table contains both static and dynamic routes. Option B is incorrect because routing algorithms used in the calculation of best paths may vary between different routing protocols, and the term "modified shortest-path-first calculation" is specific to OSPF. Option C is also incorrect because a routing table contains all accepted routes, not just those learned through BGP.
Therefore, option D is the correct statement. A routing table contains all accepted routes to all destinations, including both static and dynamic routes learned through various routing protocols.