Questions and Answers
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?
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What is the greatest number of subnets you can create with a Class A IPv4 address if you use a 14-bit subnet identifier?
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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?
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Study Notes
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).
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Description
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.
