IS-IS routers communicate link status to each other. Information describing the state of the link is encapsulated in _______.

Regarding the similarities and differences between IPv6 neighbor discovery link address resolution and ARP, the following statement is correct ______.

In the topology shown in the figure, perform the following configurations on RTA and RTC respectively:
RTA-ospf-1] area 1
RTA-ospf-1-area-0.0.0.1] authentication-mode simple
RTA] interface GigabitEthernet0/0
RTA-GigabitEthernet0/0] ospf authentication-mode simple plain 12345
RTC-ospf-1] area 0
RTC-ospf-1-area-0.0.0.0] authentication-mode simple
RTC] interface GigabitEthernet0/0
RTC-GigabitEthernet0/0] ospf authentication-mode simple plain 54321
If RTB needs to establish neighbor relationships with RTA and RTC respectively, which of the following configurations needs to be performed on RTB?

In the topology shown in the figure, the following configurations are performed on RTA and RTB respectively:
RTA]ospf 1
RTA-ospf-1]area 1
RTA-ospf-1-area-0.0.0.1]network 1.1.1.1 0.0.0.0
RTA-ospf-1-area-0.0.0.1]network 10.0.0.0 0.0.0.255
RTA-ospf-1-area-0.0.0.1]network 192.168.1.0 0.0.0.255
RTA-ospf-1-area-0.0.0.1]network 192.168.4.0 0.0.0.255
RTA-ospf-1-area-0.0.0.1]network 192.168.7.0 0.0.0.127
RTA-ospf-1-area-0.0.0.1]network 192.168.8.0 0.0.0.127
RTA-ospf-1-area-0.0.0.1]network 192.168.15.0 0.0.0.255
RTB]ospf 1
RTB-ospf-1]area 1
rtb-ospf-1-area-0.0.0.1]network 10.0.0.0 0.0.0.255
RTB-ospf-1-area-0.0.0.1]area 0
RTB-ospf-1-area-0.0.0.1]abr-summar192.168.0.0 255.255.248.0 not-advertise
Which of the following routes cannot exist in the RTC routing table_____

The administrator wants to configure the OSPF routing priority value to be 100 on the MSR router. Which of the following commands is correct?