Which of the following Ethernet rates requires an optical cable to operate?

Based on the network diagram (click the Exhibit Button). Router 1 installs network D in its routing table following a dynamic routing update from Router 2. Which of the following describes the information that will be installed in the routing table?

Which technologies can be used with Ethernet switches to achieve redundancy? (Choose two)

Which field in the IP routing table contains the name or address of the neighbour that advertised the prefix to the router?

Refer to the Exhibit:

Based on the network diagram (click the Exhibit Button), what are the prefix, mask, and next-hop used on CR1 to setup a default static route to R1?