A plus c.

not d. - it should be a. use BFD

Selected Answer: AC A and C

Selected Answer: CD A seems wrong since it only improves convergence time if the physical layer cannot detect the failure. Suppose you have direct fibers in your network, you do not need BFD. Tuning OSPF for fast convergence is necessary, because the default timers are very conservative, so C is correct Changing the non backbone areas type to stub will reduce the number of routes inside the areas, therefore reduce convergence time and D is correct.

Selected Answer: AC A and C are the most effective way to improve convergence on an OSPF network.

A and C

A and C

Selected Answer: AC A, C First let's define convergence: Network convergence is the time needed for the network to respond to events. One of the significant factors in routing convergence is the detection of link or node failure (events). This is where BFD comes into play. OSPF Timers "The default OSPF LSA propagation timers are quite conservative. Lowering the values of the timers that control OSPF LSA generation can significantly improve OSPF convergence times" https://www.ciscopress.com/articles/article.asp?p=1763921&seqNum=6

Yes, I believe this answer should be A&C

Yes, A and C

Selected Answer: AC There are only 2 sub-topics for fast convergence: ospf timers and BFD. see the following article at the end: https://www.ciscopress.com/articles/article.asp?p=1763921&seqNum=6

Selected Answer: CD Tuning OSPF timers and using STUB areas is the recommended method

Selected Answer: AD thinking about it, A and D could be the correct answers too, since A,C and D are all used to reduce convergence

Selected Answer: AD thinking about it, A and D could be the correct answers