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?

To know about CCNA course visit www.rjpinfotek.com

CCNA Network Essentials Questions

1.     How many bits are in a MAC Address and how is a MAC address commonly represented?

2.     What connector is used in CAT5e twisted pair cable?

3.     Which cable type is commonly used in LAN?

4.     In which physical Topology do devices connect to a Central Device.

5.     How many broadcast domains & collision domains are created when you segment a network with a 12-port switch?

6.     What are the layers of the OSI model?

7.     Which layer is responsible for determining the availability of a recipient peer?

8.     Name the PDUs of Transport, Network, Datalink & Physical layers?

9.     Which layer determines path selection in an internetwork?

10.  Which includes more overhead, connection-oriented or connectionless services?

11.  What network component allows a computer to transmit data over a standard telephone line?

12.  Which protocol resolves Host Names to IP addresses?

13.  What is the range of well-known port numbers?

14.  What are the two sub layers of Datalink layer?

15.  Which protocol discovers MAC address from a host’s IP address?

16.  Which layer of the OSI Model defines signal rate and voltages used for data transmission?

17.  At which layer of the OSI Model does a NIC operate?

18.  At which layer of the OSI Model does a HUB operate?

19.  At which layer of the OSI Model does a switch operate?

20.  At which layer of the OSI Model do encryption and decryption happen?

21.  What is ICMP?

22.  Which transport layer protocol does DHCP use?

23.  Which protocol does PING use? What is the full form of PING?

24.  What does 100baseTx represent?

25.  Mention a couple of basic differences between FTP and TFTP?

26.  What are the differences between TCP and UDP?

27.  What are the port numbers of DNS, Telnet, SMTP and POP3?

28.  What is FTP port number for data channel & control channel?

29.  Which media access method is used commonly by IEEE 802.3 standards?

30.  Which cable type can transmit data over a 1000 metre distance without a repeater?

31.  Which type of WAN provides a dedicated bandwidth link between offices?

32.  What are the 3 layers of cisco model?

33.  Which type of WAN connection provides a shared bandwidth permanent connection?

34.  What do DTE & DCE stand for in a WAN environment?

35.  What does CSU/DSU stand for?