Subnetting Foundations

Covers Lesson 1 and Lesson 2

Checks the two things everything else this week depends on: that you can convert between the notations, and that you can find a subnet's boundaries from any address inside it.

Topics covered

• Network bits versus host bits, and the 2^h − 2 host count
• Binary and hexadecimal conversion of a single octet
• Prefix to mask and mask to prefix
• Block size, network address, and broadcast address

Every question here is answerable from the first-party notes of the lessons above. You commit to an answer before you see whether it was right.

This quiz is a Week 2 milestone in its own right. Passing it does not change the completion state of any individual lesson, and you do not need it to finish the lessons it covers.

Section quiz

Subnetting Foundations

8 questions covering Lesson 1 and Lesson 2. Answer each one before you see whether you were right.

Question 1 of 8

1. How many host bits does a /26 leave?

2. A subnet has 5 host bits. How many usable host addresses does it provide?

3. What is the binary octet 11001000 in decimal?

4. The decimal value 192 written as two hexadecimal digits is:

5. What is the dotted-decimal subnet mask for /27?

6. For the mask 255.255.255.240, what is the block size in the last octet?

7. What is the network address of the subnet containing 192.168.4.77 /28?

8. What is the broadcast address of the subnet containing 10.1.1.100 /26?

Back to Lesson 2 Continue to Lesson 3

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