Think of this as creating a secure trusted tunnel at the network layer.
可以将这看作是在网络层上创建安全的可信隧道。
You can think of this as creating a secure trusted tunnel at the network layer.
您可以将这看作是在网络层创建安全的受信任隧道。
Routers operate at the network layer in the network model, one step above Ethernet.
路由器在整个网络模型的网络层运行，比以太网高了一级。
IP is the main protocol at the network layer.
IP协议是网络层的主要协议。
In the network layer, we have routers that can connect two networks.
在网络层，我们使用路由器连接两个网络。
The network layer is described below.
网络层在下面描述。
The network layer is described below.
网络层在下面描述。
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