If a neighbor has not advertised a route, the neighbor may have not put description information about the route to the local OSPF LSDB.

During network design, VLANs are assigned in many ways. Which of the following ways is seldom adopted?

Huawei's enterprise network NMS eSight has three editions: simplified, standard, and professional.
Unlike the standard edition, which of the following features is provided by the professional edition?

Ethernet supports broadcast. Once a network loop occurs, this simple broadcast mechanism will cause catastrophic consequences.
Which of the following symptoms may be caused by a loop?

When a Huawei router serves as an SSH client and attempts to log in to another Huawei router, the login fails. It is suspected that the SSH server configuration is incorrect.
Which of the following causes is the most impossible for the server fault?