Exam JN0-348 topic 1 question 23 discussion

This is correct

The suggested answer is correct

C & D; because the other options don't really contribute. Values for 'router priority' and 'options' don't seem to affect the adjacency. Neither does 'neighbor' value, but compared to A & B, is *seemingly* a better answer. Router priority - The router’s priority to become the designated router. Options - Optional capabilities of the router. Hello interval - How often the router sends hello packets. All routers on a shared network must use the same hello interval. Neighbor - IP addresses of the routers from which valid hello packets have been received within the time specified by the router dead interval. https://www.juniper.net/documentation/us/en/software/junos/ospf/topics/topic-map/ospf-overview.html

Im confused the only 2 hello packet header that indicates must be the same are hello interval and dead interval, but no option. https://www.juniper.net/documentation/us/en/software/junos/ospf/topics/topic-map/ospf-overview.html Hello interval—How often the router sends hello packets. All routers on a shared network must use the same hello interval. Router dead interval—How long the router waits without receiving any OSPF packets from a router before declaring that router to be down. All routers on a shared network must use the same router dead interval. Options—Optional capabilities of the router.