单项选择题
What is the purpose of the OSPF link-state update packet?（）
A. describes a change to the OSPF hello timer
B. carries one or more link-state advertisements
C. establishes and maintains neighbor relationships
D. describes the contents of the entire link-state database
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相关考题
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单项选择题
Why would you make a non-backbone area a stub or not-so-stubby area?（）
A. to aggregate routes learned from the ABR
B. to lower the cost of routes advertised by the ABR
C. to connect a non-contiguous area to the backbone
D. to decrease the size of the link-state database in that area -
单项选择题
During OSPF adjacency formation, in what state is a router when it is negotiating to be in charge of the database synchronization process?（）
A. Init
B. 2Way
C. ExStart
D. Exchange -
单项选择题
By default, which command can be used to display information about packets that have been logged with the syslog firewall filter action?（）
A. show log
B. show firewall
C. show log messages
D. show firewall log
