Refer to the graphic. The host has a problem establishing a telnet connection with the router attached to interface G0/0/0. Which of the following steps can be used to help the administrator identify the problem?
(Choose two)
<choice ident="A">
<choice ident="B">
<choice ident="C">
<choice ident="D">

According to the configuration on R1 shown in the following figure, the two PCs can correctly access the ISP network.

About the TTL IP header field, the following statements is correct

The following segment is part of the private address:

Only when a successful exchange of OSPF router () messages, and can exchange LSA only after the formation of a true sense of the adjacency.