Host ID
I would say it resembles a network ID because no individual computer can have an IP address that ends with 0 because that's reserved for the...network ID.
It represents the network portion
An "ip address" is a complete source or destination address that has a network id portion and a client or host portion. The network id is just a piece of the IP address. So, a public ip is an IP address that can be routed, whereas the network id is just a part of the public ip. They aren't different; the network id is part of the ip address.
Which portion of the destination IP address is used as a packet is routed through the Internet?
All of it.
host portion.
The host portion of an IP address of all zeros indicates that you are referring to 'this network'. For example, the address 145.5.0.0 means the network 145.5
the network portion of the destination ip address
Seeing as the IP address of 128.107.10.11 is a class B network, the host portion is 10.11
no
no
To seprate an ip address from the network address we use subnet mask that can seprate the ip address from the network address