A.If two devices have the same router priority, the device with a larger router ID has a higher election priority.

B.If the current DR fails, the current BDR automatically becomes a new DR, and a BDR will be elected again.

C.A device with a higher router priority has a higher election priority.

D.When a router with the highest router priority joins an OSPF network, this router will become the new DR.

A.The error may be caused by the incorrect neighbor address.

B.Error Type indicates that the BGP error is caused by the neighbor relationship error.

C.The neighbor address of this router is 10.1.1.5.

D.The error occurred at 12:40:39 on March 22, 2010.

A.Route summarization is the process of summarizing routes with the same prefix into one route and then advertising only the summarized route to other areas.

B.OSPF supports two route summarization modes: ABR summarization and ASBR summarization.

C.Route summarization can reduce routing information, decrease the routing table size, and improve router performance.

D.Any router in OSPF can summarize routes.

A.802.11n

B.802.11ac

C.802.11b

D.802.11ax

A.APs for roaming must be in the same extended service set (ESS).

B.APs for roaming do not need to have overlapping signal coverage.

C.APs for roaming must have overlapping signal coverage.

D.APs for roaming must be in the same basic service set (BSS).