Section A is the ______ portion, and Section B is the ______ portion. Subnet masks are used to separate the network and host portions of an IPv4 address. In a subnet mask, 1s are used to indicate the ______ portion of the address, and 0s are used to indicate the ______ portion of the address. In the preceding example, Section A is the ______ portion of the IPv4 address, and Section B is the ______ portion of the IPv4 address, due to the mask that is in use.
1) network, host, network, host, network, host
2) host, network, host, network, host, network
3) network, host, host, network, network, host
4) host, network, network, host, host, network