Which group of devices is represented by the IPv6 address ff02::1?
The IPv6 address ff02::1 is a link-local multicast address. It represents the all-nodes multicast group on the local network.
Therefore, the correct answer is option C: All nodes on the local network.
This address is used by IPv6 nodes to send multicast packets to all other IPv6 nodes on the same link. IPv6 multicast addresses begin with the prefix ff00::/8. The remaining 4 bits specify the multicast scope, which can be link-local, site-local, organization-local, or global.
Option A: All PIM routers on the local network, refers to the Protocol Independent Multicast (PIM) routers that are responsible for managing multicast traffic in a network. However, the correct multicast group for PIM routers is ff02::d.
Option B: All the routers running RIP on the local network, refers to the Routing Information Protocol (RIP), which is a routing protocol used in IP networks. However, the correct multicast group for RIP routers is ff02::9.
Option D: All NTP servers on the local network, refers to the Network Time Protocol (NTP) servers that are responsible for synchronizing the time between devices in a network. However, the correct multicast group for NTP servers is ff0x::101, where x depends on the scope of the network.
In conclusion, the correct answer is C: All nodes on the local network.