CCNA DC FAQ: Fundamentals of IPv4 Addressing and Routing Figure: Routing Logic: PC1 Sending an IP Packet to PC2 Q1. Which of the following are functions of OSI Layer 3 protocols? (Choose two answers.) a. Logical addressing b. Physical addressing c. Path selection d. Arbitration e. Error recovery Answer: A and D. The network layer defines logical addressing, in … [Read more...]