Question $2$ of $5$

Which of following statements are CORRECT?

LFA FRR stands for Loop$-$Free Alternate Fast Reroute

There are two methods for OSPF to calculating the backup path, per$-$link and per$-$prefix. Per$-$prefix calculation requires less memory and processing power on the routers.

LFA FRR enables OSPF to pre$-$compute a loop$-$free backup path and install the backup next hop in FIB

In the node protection mode of LFA, the backup path must not traverse any link used by the primary path.