How many secondary IP addresses can be configured on an interface?
unlimited
When a device wants to send a broadcast message to its own subnet, it will send it to [ip-address].
255.255.255.255
Enable debugging for ICMP packets: R1# […]
debug ip icmp
Enable directed broadcast forwarding on an interface: R1(config-if)# […]
ip directed-broadcast
Directed broadcast forwarding is [enabled/disabled] on Cisco routers by default.
disabled
A […] is a message sent to the broadcast address of another subnet.
directed broadcast
Does the show ip interface command display secondary IP addresses?
Yes
Does the show ip interface brief command display secondary IP addresses?
No
Configure a secondary IP address on an interface: R1(config-if)# […]
ip address ip-address subnet-mask secondary
Layer […] forwarding involves looking for the most specific match.
3
Layer […] forwarding involves exact matches.
2
When a network host sends a packet to a destination in another network, it will encapsulate it in a frame with the destination MAC of […].
the default gateway
When a network host sends a packet to a destination in the same subnet, the destination MAC will be […].
the destination host’s MAC
A network host uses […] and […] operations to determine if a destination host is in the same subnet.
XOR / AND