In the network shown in the figure below, the host has an ARP cache, and host A sends a packet to host B.
What are the destination MAC and destination IP of this packet?

In the network shown in the figure below, all routers run OSPF protocol. Above the link is the value of the Cost value, then the path for RTA to reach the network 10.0.0.0/8 is:

Which of the following descriptions about the switch is wrong?

By default, the bridge priority of Huawei switches is 32768.

Which of the following levels is not a common network level in mid-sized campus network architecture?