No, it is not. A destination IP address may be any address, usually on a completely different network. The default gateway address is used to determine where to send packets that need to be routed outside of the current local area network.
Of the four items—IP address, DNS server, subnet mask, and default gateway—only the IP address is specific to your computer. The DNS server translates domain names into IP addresses, the subnet mask defines the network and host portion of the IP address, and the default gateway is the device that routes traffic from your local network to the Internet.
Which portion of the destination IP address is used as a packet is routed through the Internet?
The Destination Address (Layer 2 or Layer 3)
The network number in an IP address is that portion of the IP address that matches the subnet mask. For instance, if the IP address is 10.11.12.13 and the subnet mask is 255.255.0.0, then the network number is 10.11.0.0. If the subnet mask is 255.255.255.0, then the network number is 10.11.12.0. The network layer (layer 2 in the OSI model) in the TCP/IP protocol stack uses the network number to determine if the destination address is directly reachable, or if the frame needs to be routed through the default gateway.
The network number in an IP address is that portion of the IP address that matches the subnet mask. For instance, if the IP address is 10.11.12.13 and the subnet mask is 255.255.0.0, then the network number is 10.11.0.0. If the subnet mask is 255.255.255.0, then the network number is 10.11.12.0. The network layer (layer 2 in the OSI model) in the TCP/IP protocol stack uses the network number to determine if the destination address is directly reachable, or if the frame needs to be routed through the default gateway.
the network portion of the destination ip address
network portion of ip address
network portion of ip address
172.16.0.0
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.
It represents the network portion
The host portion specifies the particular network interface's address. The network portion specifies the network address.