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QUESTION 22 Which of the following best describes a VLAN? The ability to to partition a subnet of hosts and switches into two or more disjoint subunits with only a trunk port designed for controlling the exchange of information between them. A system that allows a host to logically connect to a subnet while physically being connected to a completely different network. The ability to consolidate wired and wireless networking components so as to create a single logical subnet. The ability of multiple devices in different AS's to function as a single subnet through IP tunneling and other means. QUESTION 23 Consider an ethernet switch with 12 ports. What is the maximum number of simultaneous transmissions from one host to another that it can support (you may assume that nobody is broadcasting/flooding)? 0 1 04 O 5 06 O 11 O 12 QUESTION 24 Suppose a host transmits an ethernet frame which is received by a switch? How does the switch know to which port it should forward that frame so that it reaches its destination? The switch will attempt to send the frame to the different output ports one at a time until it finds the correct port at which it will receive an ACK from the destination. The switch will then record this port in its switch table. The switch will consult its switch table to identify the correct forwarding port. If there is no entry for the desired MAC address, it will flood the frame across all ports. The switch can't do this by itself. A software-defined-controller will drive this forwarding decision. The switch simply floods the frame across all of its ports meaning that all hosts (including the destination) will receive it.