16. What mask would be used when subnetting by borrowing five bits from a: b. Class B address?

Computer Networking: A Top-Down Approach (7th Edition)
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**Question 16: What mask would be used when subnetting by borrowing five bits from a:**

b. Class B address?

---
When borrowing five bits for subnetting from a Class B address, you start with the default subnet mask for Class B, which is 255.255.0.0 or /16. By borrowing five bits, you're adding them to the existing 16 bits, resulting in a /21 subnet mask. This equates to:

- 255.255.248.0

This allows for the creation of multiple subnets within the original network.
Transcribed Image Text:**Question 16: What mask would be used when subnetting by borrowing five bits from a:** b. Class B address? --- When borrowing five bits for subnetting from a Class B address, you start with the default subnet mask for Class B, which is 255.255.0.0 or /16. By borrowing five bits, you're adding them to the existing 16 bits, resulting in a /21 subnet mask. This equates to: - 255.255.248.0 This allows for the creation of multiple subnets within the original network.
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