The link layer refers to the device drivers providing access to the physical layer, which could be numerous mediums, such as serial links or Ethernet devices.
链路层是指提供对物理层访问的设备驱动程序，这可以是各种介质，例如串口链路或以太网设备。
2
Random or serialaccess: will the tool move at random through the postmortem artifact, or will it access the contents serially?
随机或串行存储：工具采用随机还是串行方式访问后期工件？
3
Before Version 2.0, this access was limited to serial consoles via secure console servers.