When the Hold time supported by two BGP neighbors is inconsistent, the neighbors will negotiate to adopt the lowest Hold time interval that both ends can support.

During the operation of the DHCP protocol, the process from the client application to obtaining an IP address is ().

When the administrator configures VRRP, which of the following are not mandatory? (Multiple choice)

What is the meaning of B in the FLAG field in the forwarding table?

In the network shown in the figure, the R1 device is configured with route penetration, then the R1 device sends the LSP of Leve1-2 to R3, so that R3 can learn the entire network route.