6.4.7 Check Your Understanding – Broadcast Containment Answers

1. The destination MAC address of an Ethernet broadcast in hexadecimal is:

• 48 one bits
• 48 F digits
• 1111.1111.1111
• FFFF.FFFF.FFFF

2. When an Ethernet switch receives a frame that is broadcast, it will:

• Forward the frame out all ports except the incoming port
• Forward the frame out all ports including the incoming port
• Forward the frame out only ports that need the broadcast
• Drop the frame

3. Host-A has an Ethernet frame to send to Host-B on the same network. Host-A knows the IP address of Host-B but not its MAC address. What message will Host-A send to determine the MAC address of Host B?

• ARP discovery
• ARP request
• ARP reply
• ARP broadcast

4. An ARP request is sent out as:

• a broadcast, so all devices on the same network will receive it
• a broadcast, so all devices on the network and other networks will receive it
• a unicast, so only the device with the proper IP address will receive it
• a unicast, so only the device with the proper MAC address will receive it

5. Host-B receives an ARP request. Host-B will return an ARP Reply if:

• The IP address in the ARP request matches its own IP address.
• The MAC address in the ARP request matches its own MAC address.
• The IP and MAC addresses in the ARP request matches its own IP and MAC addresses.

6. Host-A sends an ARP request and receives an ARP reply from Host-B. What is in the ARP reply that Host-A did not know and needs to communicate with Host-B?

• Host B’s MAC address
• Host B’s IP address
• Host B’s IP and MAC addresses