The default sequence might very well be arbitrary: the first item might be about routing protocol while the second one might be about LAN switching, etc.
默认的考题顺序通常是随机的：第一项考题可能是关于路由协议的而第二项考题有可能就是LAN交换的等。
2
Think about small mistakes such as typos in configuration lines, missing a loopback prefix in your routing protocol, or missing a small requirement in an exam item.