IP Address Classes are the categorical divisions of IPv4 addresses based on their first octet values. These classes are Class A, Class B, Class C, Class D, and Class E. Class A addresses have a range of 1.x.x.x to 126.x.x.x, used for large organizations; Class B addresses encompass 128.x.x.x to 191…IP Address Classes are the categorical divisions of IPv4 addresses based on their first octet values. These classes are Class A, Class B, Class C, Class D, and Class E. Class A addresses have a range of 1.x.x.x to 126.x.x.x, used for large organizations; Class B addresses encompass 128.x.x.x to 191.x.x.x, meant for medium-sized organizations; Class C addresses range from 192.x.x.x to 223.x.x.x, used for small networks; Class D addresses are utilized for IP multicasting (from 224.x.x.x to 239.x.x.x); and finally, Class E addresses range from 240.x.x.x to 255.x.x.x, reserved for future use and research.
Guide: Understanding IP Address Classes
What are IP Address Classes? Internet Protocol (IP) Address Classes divide the IP address space into segments. The five classes, identified by the first four bits, are Class A, B, C, D, and E. Class A, B, and C are the most commonly used for network addressing. Why are IP Address Classes Important? IP Address Classes play a critical role in organizing the IP address system, distinguishing network address from host address and supporting large, medium, and small networks. How Do IP Address Classes Work? Class A holds a large number of IP addresses with a smaller number of networks. Conversely, Class C represents a small number of IP addresses with a large number of networks, while Class B offers a balance between the two. The fifth and sixth classes, D and E, are used for multicast and experimental purposes, respectively. Exam Tips: Answering Questions on IP Address Classes Understand the range of each class and know how to recognize an IP address class by just looking at the initial figures. Pay attention to the differences between the classes; this can be key to knowing how many networks or hosts a particular class can provide. Familiarize yourself with Class D and E as they often appear in exams.
CompTIA Network+ - IP Address Classes Example Questions
Test your knowledge of IP Address Classes
Question 1
An organization has a public-facing web server with the IP address 203.0.113.15. To which IP address class does it belong?
Question 2
A company's network administrator is configuring the network to assign IP addresses to new devices. They have a requirement to provide IP addresses from the Class A private range. Which IP address subnet should be used?
Question 3
A network engineer is analyzing a network issue and discovers an IP address assigned to a device is 169.254.30.15. What type of IP address is this, and what is its purpose?
🎓 Unlock Premium Access
CompTIA Network+ + ALL Certifications
🎓 Access to ALL Certifications: Study for any certification on our platform with one subscription
3164 Superior-grade CompTIA Network+ practice questions
Unlimited practice tests across all certifications
Detailed explanations for every question
CompTIA Network+: 5 full exams plus all other certification exams
100% Satisfaction Guaranteed: Full refund if unsatisfied
Risk-Free: 7-day free trial with all premium features!