The WDM transmission network consists of three layers: Physical Layer、Data Link Layer and Network Layer.
举一反三
- The IoT system consists of three layers:, and A: sensing layer B: transport layer C: network layer D: application layer
- A typical neutral network includes layer, hidden layers and output layer.
- 如下图，一名管理员ping默认网关发现如下输出，最有可能是那一层OSI出问题？（） A: data link layer B: application layer C: access layer D: session layer E: network layer
- Flow control is one of the basic functions of the data link layer. Regarding flow control, which one is correct among following statements? A: Only the data link layer has flow control B: Not only the data link layer has flow control, but the flow control objects of each layer are the same C: Not only does the data link layer have flow control, but the flow control objects of each layer are different D: None of the above is right
- In the network layer, the transmission is ( ). A: bit stream B: message C: packet D: frame