- 搜標(biāo)題
- 搜題干
- 搜選項(xiàng)
單項(xiàng)選擇題
The network administrator has found the following problem.The remote networks 172.16.10.0， 172.16.20.0，and 172.16.30.0 are accessed through the Central router’s serial 0/0 interface. No users are able to access172.16.20.0. After reviewing the command output shown in the graphic，what is the most likely cause of the problem？（）
A.no gateway of last resort on Central
B.Central router’s not receiving 172.16.20.0 update
C.incorrect static for 172.16.20.0
D.172.16.20.0 not located in Central’s routing table
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