单项选择题
What is the OSPF default frequency,in seconds,at which a cisco router sends hello packets on a multi-access network?（）
A. 10
B. 40
C. 30
D. 20
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相关考题
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单项选择题
Which dose the frame-relay interface-dlci command configure?（）
A. remote DLCI on the main interface
B. local DLCI on the main interface
C. local DLCI on the subinterface
D. remote DLCI on the subinterface -
单项选择题
Which command can be a router to verify the layer 3 path to a host?（）
A. traceroute address
B. tracert address
C. ssh address
D. telnet address -
单项选择题
A company has a small network,consisting of a single switch and a single router.The switch has been configured with two vlans,and route-on-a-stick is being configured on the router for inter-vlan routing.A trunk is configured to connect the switch to the router.What is the minimum number of router subinterfaces that are required for all the vlans to communicate?（）
A. one
B. three
C. two
D. zero
