QUESTION 20 Which of the following is not a true statement regarding MAC addresses? There are more possible unique MAC a

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Question 20 Which Of The Following Is Not A True Statement Regarding Mac Addresses There Are More Possible Unique Mac A 1 (75.46 KiB) Viewed 59 times

QUESTION 20 Which of the following is not a true statement regarding MAC addresses? There are more possible unique MAC addresses than there are unique IP(V4) addresses, however there are more unique IPV6 addresses than unique MAC addresses O A link-layer hardware device (e.g., NIC) has a permanent and constant MAC address irrespective of which network it attaches to O When sending data to a host in an external network, we can use either the IP address or the MAC address to specify that host in our request. O MAC addresses are used to send data from one node to another within a single subnet. QUESTION 21 Suppose host X wants to send data to host Y and hosts X and Y are located in the same subnet and are only separated by a handful of switches. Further suppose that host X only has the IP address of host Y... how can host X figure out the MAC address of Y so that it can transmit the frame? It is impossible for X to learn Y's MAC address using only the IP address. For X to send data to Y, it must know Y's IP address and MAC address ahead of time The switches maintain a set of IP forwarding tables based on a routing algorithm (either distributed or SDN) - this will help route X's data to Y and X will learn Y's MAC address from the ACK X will broadcast an ARP request with Y's IP address to all hosts connected to the switches. Only the host owning that IP address (ie., Y) will send an ARP response with the MAC address The switches regularly broadcasts the mapping of IP addresses to MAC address to nodes QUESTION 22 Which of the following best describes a VLAN? The ability of multiple devices in different AS's to function as a single subnet through IP tunneling and other means. The ability to consolidate wired and wireless networking components so as to create a single logical subnet. 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. O A system that allows a host to logically connect to a subnet while physically being connected to a completely different network 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)? 1 O4 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 simply floods the frame across all of its ports meaning that all hosts (including the destination) will receive it. The switch can't do this by itself. A software-defined-controller will drive this forwarding decision. 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. OO