VLSM Quiz: Can You Subnet Variably?

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| By Thames
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Quizzes Created: 7097 | Total Attempts: 80,150
| Questions: 20 | Updated: Jul 2, 2026
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1. If you have a /24 network and need to create subnets with /26, /27, and /28 masks, which technology enables this?

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About This Quiz
Vlsm Quiz: Can You Subnet Variably? - Quiz

This quiz tests your understanding of Variable Length Subnet Masking (VLSM), a critical skill for CompTIA Network+ certification. VLSM (Network+) allows network administrators to optimize IP address allocation by using different subnet mask lengths within the same network. Master the concepts of subnet calculation, address efficiency, and practical deployment scenarios... see moreneeded for modern network design. see less

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2. How many usable hosts does a /29 subnet provide?

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3. A /25 subnet mask in dotted decimal notation is ____.

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4. Which of the following subnet masks is valid for VLSM implementation?

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5. What is the subnet mask for a /30 network?

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6. True or False: VLSM requires all subnets within a network to use the same subnet mask length.

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7. A department needs 50 hosts. What is the minimum subnet mask required?

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8. The subnet 192.168.1.0/27 contains how many addresses in total?

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9. Which organization standardized CIDR and VLSM concepts?

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10. True or False: VLSM reduces IP address waste by allowing flexible subnet sizing.

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11. What is the network address of 192.168.5.130/25?

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12. In VLSM design, subnets should be allocated from largest to smallest to ____.

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13. The prefix length /32 represents a ____ host address.

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14. True or False: Classless routing protocols are required to support VLSM.

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15. A /31 subnet is typically used for ____.

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16. How many /28 subnets can be created from a single /24 network?

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17. In the network 10.0.0.0/22, the broadcast address of the first /24 subnet is ____.

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18. Which routing protocol best supports VLSM?

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19. In VLSM, the first step when subnetting is to identify ____.

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20. What is the primary advantage of VLSM in network design?

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If you have a /24 network and need to create subnets with /26, /27,...
How many usable hosts does a /29 subnet provide?
A /25 subnet mask in dotted decimal notation is ____.
Which of the following subnet masks is valid for VLSM implementation?
What is the subnet mask for a /30 network?
True or False: VLSM requires all subnets within a network to use the...
A department needs 50 hosts. What is the minimum subnet mask required?
The subnet 192.168.1.0/27 contains how many addresses in total?
Which organization standardized CIDR and VLSM concepts?
True or False: VLSM reduces IP address waste by allowing flexible...
What is the network address of 192.168.5.130/25?
In VLSM design, subnets should be allocated from largest to smallest...
The prefix length /32 represents a ____ host address.
True or False: Classless routing protocols are required to support...
A /31 subnet is typically used for ____.
How many /28 subnets can be created from a single /24 network?
In the network 10.0.0.0/22, the broadcast address of the first /24...
Which routing protocol best supports VLSM?
In VLSM, the first step when subnetting is to identify ____.
What is the primary advantage of VLSM in network design?
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