The DHCPv6 server adds the management address configuration flag (M) to an RA packet . If M is set to 1, which of the following statements is true ?

An administrator has been requested to replace the configuration file of a router in the network. The administrator has been instructed that after logging into the router, he must first permanently erase the current configuration file config.zip from the system.
Which command should he use to achieve this?

The administrator found that the above message popped up on the device. The correct statement about this information is ().
<Huawei>Warning:Auto-Config is working.Before configuring the device,stop Auto-Config.If you perform Configurations when Auto-Config is running,the DHCP,routing,DNS,and VTY configurations will be lost.Do You want to stop Auto-config?[Y/N]:

If you want to connect two computers directly via twisted pair, the correct line sequence is

After the host obtains the IP address from DHCP server A and restarts, what kind of message will the following message be sent to DHCP server A?