Which of the following statements about directional antennas and omnidirectional antennas is correct? (Multiple choice)

When encountering a problem that cannot be solved by the translation tool, which of the following are the available help methods? (Multiple choice)

Which of the following is the Ethernet AD Route (Type 1) function? (Multiple choice)

In Huawei's business mobility solution, due to the intervention of the IP security group synchronization solution, which of the following can be used as access devices to authenticate terminals? (Multiple choice)

Create multiple IUNs in the storage system at the data center site. Some LUNs are used to run high-priority key services, and some LUNs are used to perform low-priority backup tasks. Which of the following technologies can ensure the normal operation of key tasks and prevent resources from being preempted by backup tasks?