Each host on a network has a unique ip address with how many bytes?

A bit is a 1 or a 0 to the computer. A byte is 8 bits. A byte can represent any number from 0-256.

for example: 00000001 = 1 / 00000010 = 2 / 00000100 = 4 / 00000111 = 7 (4+2+1).

This probably wont make you understand it but anyway an IP address like 192.168.1.101 consists of 4 bytes, or 32 bits (8 * 4). Same thing with 154.12.154.254 or 1.1.1.1