From the course: Cert Prep: ISC2 Certified in Cybersecurity (CC)
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IP addresses and DHCP
From the course: Cert Prep: ISC2 Certified in Cybersecurity (CC)
IP addresses and DHCP
- [Instructor] For the Internet Protocol to successfully deliver traffic between any two systems on a network, it has to use an addressing scheme. Just like telephones use phone numbers and postal mail uses street addresses, the internet needs an addressing scheme. Because the addresses are used by the Internet Protocol, they're known as IP addresses. IP addresses are written in what's known as the dotted quad notation. This means that there are four numbers separated by periods. Each of these numbers may range between zero and 255. Now, you might ask why 255? That's because each number in the dotted quad notation is represented using eight binary bits, and those bits can represent two to the eighth power possible numbers. Two to the eighth is 256, but since we start counting at zero, we can only go up to 255 in our IP address values. A system's IP address uniquely identifies it on a network. If the system is directly…
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