Regarding the role of the ARP protocol and packet encapsulation, which one is correct?

There are hosts in a private network that need to access the Internet. In order to achieve this requirement, which of the following configurations should the administrator do on the edge router of the network?

When using the ping command on the VRp platform, if you need to specify a P address as the source address of the echo request message, which of the following parameters should be used? ()

By default, what is the RouterDeadInterval of the OSPF protocol on the broadcast network?

In the network shown in the figure, which of the following descriptions is correct.