Free IP Subnetting Quiz

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1. You have been assigned a network of 114.56.72.0/25. How many usable host addresses do you have available for use?

128

254

126

Question 1 of 50

2. You have been assigned a network of 192.168.100.0/24. You need to create as many subnets as possible with a subnet mask of 255.255.255.224. How many subnets will you create?

Question 2 of 50

3. Which of the following is the broadcast address for 10.133.122.19/22?

10.133.122.255

10.133.122.31

10.133.123.255

10.133.125.255

Question 3 of 50

4. Which of the following subnet masks is represented by /29?

255.255.255.240

255.255.255.224

255.255.255.252

255.255.255.248

Question 4 of 50

5. Your department has been assigned 10.100.0.0/16. You would like to create 128 equally sized networks within the assigned range. What is the maximum number of usable hosts in each subnet?

510

1022

254

1024

Question 5 of 50

6. A branch location has the following network addresses:

192.168.8.0/24
192.168.9.0/24
192.168.16.0/24

Which of the following is the smallest summary address containing all three networks?

192.168.8.0/21

192.168.0.0/18

192.168.0.0/19

192.168.8.0/20

Question 6 of 50

7. Which of the following subnet masks allows for only 30 usable hosts?

255.255.255.224

255.255.255.192

255.255.255.240

255.255.255.248

Question 7 of 50

8. What is the network address for a subnet containing a host with IP address 164.10.24.53/19?

164.10.24.32

164.10.24.0

164.8.0.0

164.10.0.0

Question 8 of 50

9. A host with IP address 14.226.52.17/24 belongs to a network containing how many usable addresses?

510

254

1022

126

Question 9 of 50

10. Given the network address of 172.16.20.32/30, which of the following is a valid host address?

172.16.20.35

172.16.20.34

172.16.20.36

172.16.20.32

Question 10 of 50

11. A branch office has been allocated 172.16.0.0/16 for use. You would like to create equally sized subnets containing at least 750 hosts each. What is the maximum number of subnets you can create given the requirements?

Question 11 of 50

12. How many usable host addresses are available in a /21 network?

1022

252

510

2046

Question 12 of 50

13. Given the class C network of 192.168.0.0/16 and a subnet mask of 255.255.255.192, how many usable addresses are available in each subnet?

126

254

Question 13 of 50

14. Give the class C network of 192.168.0.0/16, which subnet mask would be applied to allow for 16 equally sized subnets that consume the entire network range?

255.255.248.0

255.255.240.0

255.255.254.0

255.255.252.0

Question 14 of 50

15. A PC has an IP address of 114.16.32.218 and a subnet mask of 255.255.128.0 . Which of the following IP addresses CAN NOT be used for another PC that needs to reside in the same subnet?

114.16.129.217

114.16.65.44

114.16.17.8

114.16.32.116

Question 15 of 50

16. You are tasked with assigning a network range that contains 1200 usable addresses. Which of the following subnet masks would meet the requirement with the least amount of wasted space?

255.255.254.0

255.255.240.0

255.255.252.0

255.255.248.0

Question 16 of 50

17. Your company has been assigned public address space of 190.188.10.0/23. Which of the following is NOT a valid IP address for use?

190.188.10.24

190.188.11.255

190.188.10.255

190.188.11.24

Question 17 of 50

18. The subnet mask 255.255.224.0 can also be represented using which of the following?

/19

/23

/22

/20

Question 18 of 50

19. Which of the following is the broadcast address for 204.64.21.200/30

204.64.21.201

204.64.21.206

204.64.21.203

204.64.21.207

Question 19 of 50

20. A branch office has the following networks:

172.16.254.0/23
172.16.252.0/25
172.16.252.128/25
172.16.253.0/24

A summary route has been configured for 172.16.252.0/22 to represent the branch networks. Which of the following statements is true?

All branch networks will be reachable via the summary address

One of the branch networks will not be reachable via the summary address

Two of the branch networks will not be reachable via the summary address

None of the branch networks will be reachable via the summary address

Question 20 of 50

21. A branch office has the following networks:

172.16.31.0/24
172.16.16.0/24
192.168.100.0/24
192.168.99.0/24

Which two summary routes can be used to represent all networks at the branch office?

172.16.16.0/20

172.16.16.0/21

192.168.96.0/21

192.168.98.0/22

Question 21 of 50

22. Given the network address 64.8.8.16/28, which two IP addresses are valid host addresses?

64.8.8.31

64.8.8.30

64.8.8.17

64.8.8.16

Question 22 of 50

23. The 3rd floor of your office building has the following two subnets:

10.20.0.0/18
10.30.0.0/20

Which two of the following statements are TRUE?

The 10.20.0.0 network has less usable IP addresses than the 10.30.0.0 network

The 10.30.0.0 network has 4092 usable addresses

10.20.0.0 network has 1022 usable addresses

The 10.20.0.0 network has more usable addresses than the 10.30.0.0 network

Question 23 of 50

24. Given the subnet mask 255.255.128.0, which two statements are FALSE?

The subnet mask allows for less than 510 usable addresses

The subnet mask can be represented as /17

The subnet mask allows for greater than 510 usable addresses

The subnet mask can be represented as /18

Question 24 of 50

25. You have been tasked with assigning a network range that allows for 1022 usable addresses. Which two of the following statements are TRUE?

The subnet mask should be 255.255.254.0

192.168.20.0/23 would meet the requirement

The subnet mask should be 255.255.252.0

192.168.20.0/22 would meet the requirement

Question 25 of 50

26. Given the class C network of 192.168.0.0/16, which two of the following statements are FALSE?

The network could be subnetted into 256 subnets that contain 254 hosts each

The network could be subnetted into 128 subnets containing 1022 hosts each

192.168.99.0/23 is a valid network address within the class C range

192.168.16.0/20 is a valid network address within the class C range

Question 26 of 50

27. Given the network address 210.4.4.0/22, which two of the following statements are TRUE?

The subnet mask for this network is 255.255.252.0

210.4.5.255 is the broadcast address for this network

210.4.7.255 is the broadcast address for this network

The subnet mask for this network is 255.255.254.0

Question 27 of 50

28. A client PC has an IP address of 10.18.64.17 and a subnet mask of 255.255.255.248. Which two of the following statements are TRUE?

The client is contained in a subnet with a network address of 10.18.64.16

Another PC with an IP address of 10.18.64.33 would be in the same subnet

The PC belongs to a subnet that has 6 usable addresses

The subnet mask for this PC could also be represented as /28

Question 28 of 50

29. A summary route of 172.28.0.0/16 has been configured on your head office router in order to reach a branch office. You have been tasked with assigning two new subnets for the branch office. Which of the following networks should be chosen so that no additional routes need to be configured on the head office router?

172.32.0.0/25

172.28.16.0/28

172.28.17.0/24

172.32.128.0/25

Question 29 of 50

30. Your company data center has been allocated 10.101.0.0/16 for use. Which two of the following statements are true?

10.102.0.0/24 can be used in the data center to provide a subnet with 254 usable addresses

10.101.128.0/24 can be used in the data center to provide a subnet with 254 usable addresses

10.101.200.0/25 can be used in the data center to provide a subnet with 126 usable addresses

10.101.255.0/24 cannot be used as it contains the broadcast address of 10.101.255.255

Question 30 of 50

31. Match the subnet mask with a corresponding CIDR notation

255.255.224.0	10.10.0.0/25 Unselect 10.10.0.0/19 Unselect 10.10.0.0/28 Unselect 10.10.0.0/23 Unselect 10.10.0.0/21 Unselect
255.255.255.128	10.10.0.0/25 Unselect 10.10.0.0/19 Unselect 10.10.0.0/28 Unselect 10.10.0.0/23 Unselect 10.10.0.0/21 Unselect
255.255.248.0	10.10.0.0/25 Unselect 10.10.0.0/19 Unselect 10.10.0.0/28 Unselect 10.10.0.0/23 Unselect 10.10.0.0/21 Unselect
255.255.255.240	10.10.0.0/25 Unselect 10.10.0.0/19 Unselect 10.10.0.0/28 Unselect 10.10.0.0/23 Unselect 10.10.0.0/21 Unselect
255.255.254.0	10.10.0.0/25 Unselect 10.10.0.0/19 Unselect 10.10.0.0/28 Unselect 10.10.0.0/23 Unselect 10.10.0.0/21 Unselect

Question 31 of 50

32. Match the CIDR notation to the number of usable host addresses

192.168.10.0/24	4094 Unselect 254 Unselect 1022 Unselect 14 Unselect 30 Unselect
172.16.0.0/20	4094 Unselect 254 Unselect 1022 Unselect 14 Unselect 30 Unselect
10.100.10.16/28	4094 Unselect 254 Unselect 1022 Unselect 14 Unselect 30 Unselect
64.4.4.96/27	4094 Unselect 254 Unselect 1022 Unselect 14 Unselect 30 Unselect
10.128.44.0/22	4094 Unselect 254 Unselect 1022 Unselect 14 Unselect 30 Unselect

Question 32 of 50

33. Match the subnet mask to the number of usable hosts

255.255.0.0	1022 Unselect 65534 Unselect 254 Unselect 62 Unselect 126 Unselect
255.255.255.0	1022 Unselect 65534 Unselect 254 Unselect 62 Unselect 126 Unselect
255.255.252.0	1022 Unselect 65534 Unselect 254 Unselect 62 Unselect 126 Unselect
255.255.255.128	1022 Unselect 65534 Unselect 254 Unselect 62 Unselect 126 Unselect
255.255.255.192	1022 Unselect 65534 Unselect 254 Unselect 62 Unselect 126 Unselect

Question 33 of 50

34. You are given a network allocation of 10.200.0.0/16 . Match the number of available subnets in this range to the subnet mask assigned to the hosts. Assume all subnets are of equal size.

255.255.255.0	64 Unselect 16 Unselect 512 Unselect 256 Unselect
255.255.240.0	64 Unselect 16 Unselect 512 Unselect 256 Unselect
255.255.248.0	64 Unselect 16 Unselect 512 Unselect 256 Unselect
255.255.255.128	64 Unselect 16 Unselect 512 Unselect 256 Unselect

Question 34 of 50

35. You are provided a network address of 192.168.24.0/26. The first 10 usable addresses are reserved for static IP assignment. How many usable IP addresses are left in the subnet?

Question 35 of 50

36. Which of the following subnet masks is represented by /17?

255.255.224.0

255.255.128.0

255.255.240.0

255.255.0.0

Question 36 of 50

37. A small company has chosen to use the 192.168.0.0/24 network range for use in their network. Match the number of available subnets to the CIDR notation. Assume all other subnets are the same size.

192.168.0.0/27	2 Unselect 8 Unselect 32 Unselect 16 Unselect
192.168.0.0/29	2 Unselect 8 Unselect 32 Unselect 16 Unselect
192.168.0.0/25	2 Unselect 8 Unselect 32 Unselect 16 Unselect
192.168.0.0/28	2 Unselect 8 Unselect 32 Unselect 16 Unselect

Question 37 of 50

38. A PC has an IP address of 17.64.112.8420. Which two of the following statements are true about the subnet the PC is contained in?

The broadcast address for this network is 17.62.119.255

The broadcast address for this network is 17.62.127.255

The network has 4094 usable host addresses

The network has 2046 usable host addresses

Question 38 of 50

39. Match the default subnet mask to the given IP addresses based on class membership.

8.8.4.4	255.0.0.0 Unselect 255.255.0.0 Unselect 255.255.255.0 Unselect 255.255.0.0 Unselect 255.255.255.0 Unselect 255.0.0.0 Unselect
126.74.89.224	255.0.0.0 Unselect 255.255.0.0 Unselect 255.255.255.0 Unselect 255.255.0.0 Unselect 255.255.255.0 Unselect 255.0.0.0 Unselect
196.240.16.35	255.0.0.0 Unselect 255.255.0.0 Unselect 255.255.255.0 Unselect 255.255.0.0 Unselect 255.255.255.0 Unselect 255.0.0.0 Unselect
129.44.32.18	255.0.0.0 Unselect 255.255.0.0 Unselect 255.255.255.0 Unselect 255.255.0.0 Unselect 255.255.255.0 Unselect 255.0.0.0 Unselect
162.53.78.23	255.0.0.0 Unselect 255.255.0.0 Unselect 255.255.255.0 Unselect 255.255.0.0 Unselect 255.255.255.0 Unselect 255.0.0.0 Unselect
198.169.10.11	255.0.0.0 Unselect 255.255.0.0 Unselect 255.255.255.0 Unselect 255.255.0.0 Unselect 255.255.255.0 Unselect 255.0.0.0 Unselect

Question 39 of 50

40. What is the broadcast address for 65.32.188.011?

65.32.191.255

65.32.188.255

65.32.255.255

65.63.255.255

Question 40 of 50

41. A PC is configured with the IP address of 126.114.18.19 and the default subnet mask for a class A network. Which of the following is the network address?

126.114.0.0

126.0.0.0

126.114.18.0

126.114.18.16

Question 41 of 50

42. You are tasked with creating a network large enough for 450 hosts. Which of the following networks will meet the requirement while wasting the least amount of address space?

10.224.32.022

172.16.16.023

192.168.100.0/24

10.224.64.024

Question 42 of 50

43. How many host addresses are contained within a network using the subnet mask of 255.255.252.0? Include the broadcast and network addresses.

512

1024

4096

2048

Question 43 of 50

44. Given the network address 162.1.24.0/22, which two of the following IP address can be used for client PC's?

162.1.28.34

162.1.24.18

162.1.26.255

162.1.27.255

Question 44 of 50

45. A branch office has the following networks:

10.100.18.0/24
10.100.31.0/24
10.100.17.0/24
10.100.16.128/25

Which of the following summary addresses contains all four networks?

10.100.16.0/22

10.100.16.128/20

10.100.16.0/21

10.100.16.0/20

Question 45 of 50

46. The following summary address has been configured on the HQ router in order to reach the branch networks:

172.16.0.0/12

Which two of the following statements are TRUE?

172.34.16.15 is reachable via the summary address

172.19.14.210 is reachable via the summary address

All subnets at the branch location must have a subnet mask of 255.240.0.0 in order to be reachable via the summary address

172.16.0.0/24 is a valid subnet at the branch office

Question 46 of 50

47. Which of the following networks allows for at least 128 endpoints?

10.36.25.128/25

10.36.25.0/24

10.36.25.0/26

Question 47 of 50

48. Given the network address 8.4.160.0/21, which of the following IS NOT a valid host address?

8.4.167.255

8.4.166.255

8.4.161.255

8.4.162.255

Question 48 of 50

49. Given the network address 18.64.22.0/23, which two of the following statements are TRUE?

The broadcast address for this network is 18.64.23.255

The broadcast address for this network is 18.64.22.255

The network allows for 512 usable addresses

The network allows for 510 usable addresses

Question 49 of 50

50. What is the binary representation of 255.255.224.0?

11111111 11111111 11111000 00000000

11111111 11111111 11100000 00000000

11111111 11111111 11100000 00000111

11111111 11111111 11100000 00000001

Question 50 of 50