Networking IPv4 Classes Quiz

To which class does the following IPv4 address belong: 190.126.14.251?

Which term describes the ability of Classless Inter-Domain Routing (CIDR) to create subnets using any number of IP address bits?

What subnet mask value should Ralph use when configuring his computers for the network address 10.12.0.0/14?

Is it possible to configure Ed's Class C network address of 192.168.30.0 with 10 subnets, each with 14 hosts?

What is the greatest number of subnets you can create with a Class A IPv4 address if you use a 14-bit subnet identifier?

How many bits are required for subnets, hosts, and what will be the new subnet mask for Alice's network addressing scheme of 192.168.30.0 with 4 subnets and 28 hosts per subnet?

IPv4 Address Classes

Class A: First octet range 1-126.
Class B: First octet range 128-191.
Class C: First octet range 192-223.
Class D: First octet range 224-239.

Classless Inter-Domain Routing (CIDR)

CIDR allows the creation of subnets with flexible bit allocation instead of fixed 8-bit blocks.
Variable Length Subnet Masking (VLSM) enables subnetting with custom host bits, enhancing network flexibility.
APIPA is used for automatic IP addressing when DHCP is unavailable.
Virtual Local Area Networks (VLAN) create separate broadcast domains in large networks.
EUI-64 is an IPv6 address creation method from MAC addresses.

Subnet Mask Calculation

For the network 10.12.0.0/14, the subnet mask in binary is 11111111 11111100 00000000 00000000.
The decimal equivalent of this binary mask is 255.252.0.0.

Subnetting in Class C Addresses

Class C address: 192.168.30.0; needs 10 subnets with 14 hosts each.
Allocating 4 bits for subnets allows for 16 subnets.
Remaining 4 bits provide sufficient addresses for 14 hosts per subnet.

Subnet Creation with Class A

Using a 14-bit subnet identifier can yield up to 16,384 possible subnets (2^14).

Subnetting Requirements for Class C Address

For 4 subnets with 28 hosts per subnet:
- 3 bits for subnets allows for 8 subnets.
- 5 bits for hosts supports 30 addresses.
- New subnet mask becomes 255.255.255.224.

MAC Address Overview

A sitcom provides an example of a hexadecimal MAC address format (e.g., 001F9EFC7AD0).

Test your knowledge on IPv4 addressing classes with this quiz focusing on Class A, B, C, and D. Understand the octet ranges and standards like Classless Inter-Domain Routing (CIDR). Perfect for networking students and professionals alike.