the second layer exchange machine

• 第二层交换机

the second layer exchange machine的用法和样例：

例句

1. The advantages of Layer 2 switches lie in speed and cost.
   第二层交换机的优点在于速度和成本。
2. Layer 2 switches can improve performance by dividing LANs into smaller segments and by providing dedicated connections between workstations and switch ports for high-power users.
   第二层交换机通过把局域网分成小段并为实力强大的用户提供工作站与交换机端口之间的专用连接而提高了性能。