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Cisco Certification IP Address

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Answer 31 questions in 15 minutes.
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Match each statement with the correct term.
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This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. If the first bits of the first octet are '1110' what type of address is it?
Used by routers to specify the 'default' route. Generic value reduces the number of routing table entries. Some older routers use this address as a broadcast address.
The range of IP addresses available to be assigned to network hosts.Example: Class A 115.0.0.0=host range 115.0.0.1 to 115.255.255.254. Class B 154.90.0.0=host range 154.90.0.1 to 154.90.255.254. Class C 221.65.244.0=host range 221.65.244.1 to 221.65
Class D (11100000--11101111 binary)
Routers connected to the Internet typically filter messages within these ranges and prevent them from being propagated to the Internet.

2. What is the IP address range for Class E?
255.255.255.0
The Broadcast address for the associated network.
The network address is first followed by 0's. examples: Class A network address: 115.0.0.0 - Class B network address: 154.90.0.0 - Class C network address: 221.65.244.0
240-255 (11110000--11111111 binary)

3. What is the IP address range for Class D?
224-239 (11100000--11101111 binary)
Used by routers to specify the 'default' route. Generic value reduces the number of routing table entries. Some older routers use this address as a broadcast address.
The Broadcast address for the associated network.
N/a

4. What is the IP address range for Class A?
N/a
The network address is first followed by 0's. examples: Class A network address: 115.0.0.0 - Class B network address: 154.90.0.0 - Class C network address: 221.65.244.0
Class D (11100000--11101111 binary)
1-126 (00000001--01111110 binary)

5. What is 192.168.0.0 to 192.168.255.255 reserved for? reserved for?
1-126 (00000001--01111110 binary)
N/a
The Broadcast address for the associated network.
Private Use Class C

6. What do you get when you set the Network portion of the address to 0s?
The Host address on the local network?
255.255.0.0
Used by routers to specify the 'default' route. Generic value reduces the number of routing table entries. Some older routers use this address as a broadcast address.
Class E (11110000--11111111 binary)

7. What is the default subnet mask for a Class A IP Address?
Routers connected to the Internet typically filter messages within these ranges and prevent them from being propagated to the Internet.
Used by routers to specify the 'default' route. Generic value reduces the number of routing table entries. Some older routers use this address as a broadcast address.
224-239 (11100000--11101111 binary)
255.0.0.0

8. If the first bit of the first octet is '0' what type of address is it?
255.0.0.0
Class A (00000001--01111110 binary)
224-239 (11100000--11101111 binary)
Multicast groups

9. What is the default subnet mask for a Class C IP Address?
Class B (10000000--10111111 binary)
Class A (00000001--01111110 binary)
255.0.0.0
255.255.255.0

10. What are the two parts of an IP address?
224-239 (11100000--11101111 binary)
Network address & Host address
The Broadcast address for the associated network.
255.0.0.0

11. What does the subnet mask and/or the address class specify?
Class B (10000000--10111111 binary)
N/a
The range of IP addresses available to be assigned to network hosts.Example: Class A 115.0.0.0=host range 115.0.0.1 to 115.255.255.254. Class B 154.90.0.0=host range 154.90.0.1 to 154.90.255.254. Class C 221.65.244.0=host range 221.65.244.1 to 221.65
Multicast groups

12. What is the default subnet mask for a Class D IP Address?
The range of IP addresses available to be assigned to network hosts.Example: Class A 115.0.0.0=host range 115.0.0.1 to 115.255.255.254. Class B 154.90.0.0=host range 154.90.0.1 to 154.90.255.254. Class C 221.65.244.0=host range 221.65.244.1 to 221.65
Class A (00000001--01111110 binary)
To send messages to all hosts on the network at the same time.
N/a

13. What is the default subnet mask for a Class B IP Address?
The range of IP addresses available to be assigned to network hosts.Example: Class A 115.0.0.0=host range 115.0.0.1 to 115.255.255.254. Class B 154.90.0.0=host range 154.90.0.1 to 154.90.255.254. Class C 221.65.244.0=host range 221.65.244.1 to 221.65
Class C (11000000--11011111 binary)
255.255.0.0
224-239 (11100000--11101111 binary)

14. How do routers generally handle Private use addresses?
Routers connected to the Internet typically filter messages within these ranges and prevent them from being propagated to the Internet.
Network address & Host address
Setting the Network address to all 0s designation means 'the broadcast address for this network.' (0.0.255.255 ) - 255.255.255.255 indicates a broadcast message intended for all hosts on this network
Class A (00000001--01111110 binary)

15. What is the IP address range for Class C?
192-223 (11000000--11011111 binary)
Class B (10000000--10111111 binary)
255.255.0.0
The Broadcast address for the associated network.

16. If the first bits of the first octet are '110' what type of address is it?
224-239 (11100000--11101111 binary)
Class C (11000000--11011111 binary)
Class A (00000001--01111110 binary)
Private Use Class B

17. What is 127.16.0.0 to 127.31.255.255 reserved for?
N/a
Private Use Class B
N/a
Class C (11000000--11011111 binary)

18. What do you see in a Broadcast address regardless of format?
255.255.0.0
255.0.0.0
Private Use Class B
The last octet is 255. (Verify)

19. What is 10.0.0.0 to 10.255.255.55 reserved for?
Experimental Use
Used by routers to specify the 'default' route. Generic value reduces the number of routing table entries. Some older routers use this address as a broadcast address.
Private Use Class A
Class E (11110000--11111111 binary)

20. What do you get if you set the Host address to all one?
N/a
Setting the Network address to all 0s designation means 'the broadcast address for this network.' (0.0.255.255 ) - 255.255.255.255 indicates a broadcast message intended for all hosts on this network
Class E (11110000--11111111 binary)
The Broadcast address for the associated network.

21. What is the IP address range for Class B?
255.255.255.0
Private Use Class A
Network address & Host address
128-191 (10000000--10111111 binary)

22. What is the Broadcast address used for?
Class E (11110000--11111111 binary)
To send messages to all hosts on the network at the same time.
255.255.255.0
Loopback

23. What is an address of 0.0.0.0 used for?

24. If the first bits of the first octet are '10' what type of address is it?
240-255 (11110000--11111111 binary)
Setting the Network address to all 0s designation means 'the broadcast address for this network.' (0.0.255.255 ) - 255.255.255.255 indicates a broadcast message intended for all hosts on this network
Class B (10000000--10111111 binary)
The network address is first followed by 0's. examples: Class A network address: 115.0.0.0 - Class B network address: 154.90.0.0 - Class C network address: 221.65.244.0

25. What is the default subnet mask for a Class E IP Address?
Routers connected to the Internet typically filter messages within these ranges and prevent them from being propagated to the Internet.
N/a
Class E (11110000--11111111 binary)
Private Use Class C

26. What is 127.0.0.0 reserved for?
Loopback
N/a
Setting the Network address to all 0s designation means 'the broadcast address for this network.' (0.0.255.255 ) - 255.255.255.255 indicates a broadcast message intended for all hosts on this network
The Host address on the local network?

27. If the first bits of the first octet are '1111' what type of address is it?
255.0.0.0
Class E (11110000--11111111 binary)
Routers connected to the Internet typically filter messages within these ranges and prevent them from being propagated to the Internet.
The Broadcast address for the associated network.

28. What are Class D addresses reserved for?
Multicast groups
224-239 (11100000--11101111 binary)
Class A (00000001--01111110 binary)
Setting the Network address to all 0s designation means 'the broadcast address for this network.' (0.0.255.255 ) - 255.255.255.255 indicates a broadcast message intended for all hosts on this network

29. In addition to setting the Host address to All 1s - what other formats/short cuts might you see for hosts on this network?

30. What is the characturistic of a network address?

31. What are Class E addresses reserved for?
Experimental Use
The last octet is 255. (Verify)
Class C (11000000--11011111 binary)
Private Use Class A