CCNA IP Addressing Questions

1. What are the various ways of assigning an IP address to a network host?

2. Which organization was initially responsible for allocating public IP addresses 

& which organization replaced it?

3. In which RFCs have IP address, CIDR & Supernetting been described officially?

4. Which of the following subnet mask would be right for a point to point link?

A 255.255.255.253

B 255.255.255.0

C 255.255.255.128

D 255.255.255.252

E 255.255.252.0

5. Which blocks of the IP addresses have been reserved for private use?

6. How many hosts are supported in a network with prefix /22?

7. Which protocol helps avoid duplicate IP address assignment in a network?

8. What do you mean by prefix and suffix in an IP address? 

9. What is APIPA? 

10. What's the benefit of subletting?

11. What are the benefits of CIDR implementation?

12. What is the block size of the subnet with a mask 255.254.0.0?

13. What is the broadcast address of the network 172.16.32.128/26?

14. How many host addresses are available in the network 192.168.139.0/26?

15. What is the range of valid host addresses in the sub network 172.16.16.0/22?

16. Which subnet does host 172.27.116.111 255.255.255.192 belong to?

17. Determine the subnet ID & the broadcast address to which the IP address 10.28.64.2/18 belongs to.

18. A Network administrator has to divide 172.16.0.0/16 into minimum of 128 subnets with at least 1000 hosts/subnet. What would be the subnet mask of the subnets and the last sub network address after dividing the above network address?

19. What will happen if "IP SUBNET-ZERO" is not configured in a router?

20. What valid host range is the IP address 172.27.220.40 255.255.254.0 part of? (Clue: subnet range)

21. What is the broadcast address of the network 172.31.9.0/25?

22. Which subnet does host 172.22.95.149 255.255.255.192 belong to?

23. What valid host range is the IP address 172.23.55.155/26 part of?

24. What is the first valid host, last valid host and broadcast address of the subnet to which the host 10.95.78.139/20 belongs to?

25. What is the broadcast address of the network 172.30.180.0/22?

26. Which subnet does host 192.168.28.132 255.255.255.192 belong to?

27. What is the last valid host on the subnet 192.168.238.80/28?

28. What is the broadcast address of the network 172.18.112.0 255.255.252.0?

29. What valid host range is the IP address 172.19.126.127 255.255.252.0 a part of?

30. Which subnet does host 172.24.193.223 255.255.248.0 belong to?

31. Which subnet does host 172.20.213.190/22 belong to?

32. What valid host range is the IP address 192.122.63.27/28 a part of?

33. What valid host range is the IP address 192.19.191.203/27 a part of?

34. What is the broadcast address of the network 171.23.0.0 255.255.240.0?

35. What valid host range is the IP address 172.21.95.255/23 a part of?

36. How many subnets and hosts per subnet are possible with the network 10.0.0.0/20?

37. What is the last valid host on the subnet 172.28.0.0 255.255.252.0?

38. How many subnets and hosts per subnet can you get from the network 192.166.95.0/27?

39. What valid host range is the IP address 172.229.133.119 255.255.240.0 a part of?

40. What is the broadcast address of the network 194.166.72.192 255.255.255.224?

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