VLSM (Network+) Subnetting Quiz

1. If you have a /24 network and need to create subnets with /26, /27, and /28 masks, which technology enables this?

CIDR

VLSM

Classful routing

Static routing

Submit

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

/24 and /25 in the same network

Only /24 subnets

Only Class B networks

Classful subnets only

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

255.255.255.192

255.255.255.224

255.255.255.240

255.255.255.252

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

True

False

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

/25

/26

/27

/28

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

16 addresses

32 addresses

64 addresses

128 addresses

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

True

False

9. Which routing protocol best supports VLSM?

RIPv1

IGRP

OSPF

EGP

10. Which organization standardized CIDR and VLSM concepts?

IEEE

IETF

ISO

ICANN

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

True

False

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

192.168.5.0

192.168.5.64

192.168.5.128

192.168.5.192

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

4 subnets

8 subnets

16 subnets

32 subnets

Submit

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

2 hosts

4 hosts

6 hosts

8 hosts

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

Eliminates the need for routing protocols

Allows different subnet mask lengths within the same network

Increases packet transmission speed

Reduces the number of routers needed

Submit

VLSM Quiz: Can You Subnet Variably?

1. If you have a /24 network and need to create subnets with /26, /27, and /28 masks, which technology enables this?

2.

What first name or nickname would you like us to use?

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

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

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

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

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

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

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

9. Which routing protocol best supports VLSM?

10. Which organization standardized CIDR and VLSM concepts?

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

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

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

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

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

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

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

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

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

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