Class B Network Subnetting
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Questions and Answers

Given Class B 176.5.0.0/27 (11 bits borrowed): What is the default Class B mask?

255.255.0.0

Given Class B 176.5.0.0/27 (11 bits borrowed): What is the new subnet mask in dotted decimal (with the 11 bits borrowed)?

255.255.224.0

Given Class B 176.5.0.0/27 (11 bits borrowed): How many total subnets were created?

2048

Given Class B 176.5.0.0/27 (11 bits borrowed): How many usable hosts are on each subnet (Hint: 5 host bits remain)?

<p>30</p> Signup and view all the answers

Given Class B 176.5.0.0/27 (11 bits borrowed): What is the network address of subnet #5 (the 6th subnet since we include subnet 0)?

<p>176.5.160.0</p> Signup and view all the answers

Given Class B 176.5.0.0/27 (11 bits borrowed): What is the broadcast address of subnet #5?

<p>176.5.191.255</p> Signup and view all the answers

Given Class B 176.5.0.0/27 (11 bits borrowed): What is the range of available host addresses for subnet #5? (Include all octets.)

<p>176.5.160.1 - 176.5.191.254</p> Signup and view all the answers

Given Class B 176.5.0.0/27 (11 bits borrowed): What is the network address of subnet #45?

<p>176.5.1440.0</p> Signup and view all the answers

Given Class B 176.5.0.0/27 (11 bits borrowed): What is the range of available host addresses for subnet #45?

<p>176.5.1440.1 - 176.5.1471.254</p> Signup and view all the answers

Flashcards

Class B Default Mask

The default subnet mask for a Class B network is 255.255.0.0.

Class B /27 Subnet Mask

With 11 bits borrowed, the new subnet mask in dotted decimal is 255.255.224.0.

Total Subnets (Class B /27)

With 11 bits borrowed from a Class B, a total of 2048 subnets are created (2^11).

Usable Hosts (Class B /27)

With 5 host bits remaining, there are 30 usable hosts per subnet (2^5 - 2).

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Subnet #5 Network Address

Subnet #5's network address is 176.5.0.160.

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Subnet #5 Broadcast Address

The broadcast address of subnet #5 is 176.5.0.191.

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Subnet #5 Host Range

The range of available host addresses for subnet #5 is 176.5.0.161 - 176.5.0.190.

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Subnet #45 Network Address

The network address of subnet #45 is 176.5.1.128.

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Subnet #45 Broadcast Address

The broadcast address of subnet #45 is 176.5.1.159.

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Subnet #45 Host Address Range

The range of available host addresses for subnet #45 is 176.5.1.129 - 176.5.1.158.

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Subnet #104's Network Address

The network address of subnet #104 is 176.5.4.0.

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Study Notes

  • All questions are based on a Class B network with the base address 176.5.0.0/27 and 11 bits borrowed for subnetting.

Default Class B Mask

  • The default Class B mask is 255.255.0.0.

New Subnet Mask

  • With 11 bits borrowed, the new subnet mask in dotted decimal is 255.255.224.0.

Total Subnets Created

  • With 11 bits borrowed, the total number of subnets created is 2048.

Usable Hosts per Subnet

  • With 5 host bits remaining, the number of usable hosts on each subnet is 30.

Network Address of Subnet #5

  • The network address of subnet #5 (the 6th subnet) is 176.5.0.160.

Broadcast Address of Subnet #5

  • The broadcast address of subnet #5 is 176.5.0.191.

Range of Available Host Addresses for Subnet #5

  • The range of available host addresses for subnet #5 is 176.5.0.161 - 176.5.0.190.

Network Address of Subnet #45

  • The network address of subnet #45 is 176.5.14.64.

Broadcast Address of Subnet #45

  • The broadcast address of subnet #45 is 176.5.14.95.

Range of Available Host Addresses for Subnet #45

  • The range of available host addresses for subnet #45 is 176.5.14.65 - 176.5.14.94.

Network Address of Subnet #104

  • The network address of subnet #104 is 176.5.13.0.

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Description

Explanation of subnetting in a Class B network (176.5.0.0/27) with 11 borrowed bits. Covers subnet mask, total subnets, usable hosts, and specific subnet addresses. Addresses network and broadcast addresses.

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