Many of the questions refer to the following network consisting of three 10Mbps Ethernet segments, one switch, and one router. Assume all ARP tables are up-to-date unless otherwise stated Switch Router a) Consider a network consisting of Ethernets, hubs, switches, and routers. Suppose one of the hubs is replaced with a switch. Then the network administrator must redefine some IP addresses True False b) The routing table in an IP module contains Ethernet addresses True False c) Referring to the network in Figure 1, suppose workstation A wants to send an IP datagram to workstation F. Then the Ethernet frame sent by A will containin its destination address field-the Ethernet address for the left router interface True False