This chapter covered PoS operation, encapsulation, protection, and convergence. You should be able to describe the most popular uses for PoS. You should be familiar with the PoS frame structure and encapsulation and be able to describe the efficiencies of PoS over other technologies. PoS design models provide advantages in the area of resiliency but need the PGP mechanism to decrease convergence times. You can achieve load balancing in PoS networks by creating multiple APS groups and using MHSRP on the LAN side of the connections. PoS is implemented as a point-to-point technology.