單項選擇題

Which command reveals the last method used to powercycle a router?（）

A. show reload
B. show boot
C. show running-config
D. show version

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單項選擇題

Which protocols are found in the network layer of the OSI reference model and are responsible for path determination and traffic switching?（）

A. LAN
B. routing
C. WAN
D. network

單項選擇題

Data transfer is slow between the source and destination. The quality of service requested by the transport layer in the OSI reference model is not being maintained. To fix this issue, at which layer should the troubleshooting process begin?（）

A. presentation
B. session
C. transport
D. network
E. physical