If a packet is sent to an IPv6 address and many devices receive the packet, what is this type of traffic?

You recently joined a company as a junior-level network administrator. You have been tasked with designing the IPv4 scheme for five networks that will be used for training classrooms. These networks need to support no more than 28 devices each. Due to the existing network design, the senior-level network administrator has asked you to work on network 192.168.40.0/24.
If all networks must be made to logically start with the lowest numbered network and end with the largest numbered network, what is the network ID for the third network?

Which Layer 1 device can be used to enlarge the area covered by a single LAN segment?

On which OSI layers do standard ACL filters operate?

What is the default route preference value for a Border Gateway Protocol (BGP) internal route?