Explanation
A router is a device that operates at the network layer (layer three) of the OSI model and forwards packets between different networks based on their destination IP addresses1. A router also utilizes routing protocols, such as OSPF, RIP, or BGP, to learn all possible paths to a destination network and select the best one based on a metric2. Therefore, statements D and E are true about a router. Statements A, B, and C are false because they describe the functions of a switch, a bridge, and a firewall, respectively3. References: 1: Aruba Certified Network Technician (ACNT) Study Guide, page 292: Aruba Certified Network Technician (ACNT) Study Guide, page 313: Aruba Certified Network Technician (ACNT) Study Guide, page 28.