Merits and demerits of routing tables

Question

What are the merits and demerits of the three kinds of routing tables?

Answer 1

The three kinds of routing tables are fixed, dynamic, and fixed central. The fixed table should be manually altered every time there is a modification. The dynamic table modifies its information based on network traffic, decreasing the amount of manual maintenance. The fixed central table lets a manager alter only one table that is then read by another device. The fixed central table decreases the requirement to update each machine's table, as with fixed table. Generally a dynamic table reasons the fewest troubles for a network administrator, though the table's contents can modify without administrator being aware of the modification.