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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. What is the default subnet mask for a Class C IP Address?
255.255.0.0
128-191 (10000000--10111111 binary)
255.255.255.0
240-255 (11110000--11111111 binary)

2. What is 10.0.0.0 to 10.255.255.55 reserved for?
Loopback
To send messages to all hosts on the network at the same time.
Private Use Class A
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.

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

4. What does the subnet mask and/or the address class specify?
The Host address on the local network?
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
Network address & Host address
Class E (11110000--11111111 binary)

5. What are Class D addresses reserved for?
Multicast groups
Class C (11000000--11011111 binary)
224-239 (11100000--11101111 binary)
255.255.255.0

6. What is the default subnet mask for a Class A IP 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
255.0.0.0
255.255.0.0
Class B (10000000--10111111 binary)

7. What do you see in a Broadcast address regardless of format?
240-255 (11110000--11111111 binary)
The last octet is 255. (Verify)
Private Use Class B
The Host address on the local network?

8. What is the default subnet mask for a Class D IP Address?
The Broadcast address for the associated network.
Routers connected to the Internet typically filter messages within these ranges and prevent them from being propagated to the Internet.
192-223 (11000000--11011111 binary)
N/a

9. How do routers generally handle Private use addresses?
255.0.0.0
Routers connected to the Internet typically filter messages within these ranges and prevent them from being propagated to the Internet.
Private Use Class C
Private Use Class B

10. What do you get if you set the Host address to all one?
The Broadcast address for the associated network.
Network address & Host address
Class A (00000001--01111110 binary)
255.0.0.0

11. What is the IP address range for Class B?
Class E (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
Multicast groups
128-191 (10000000--10111111 binary)

12. What are the two parts of an IP address?
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
Network address & Host address
255.0.0.0
255.255.255.0

13. What is the IP address range for Class C?
Private Use Class C
192-223 (11000000--11011111 binary)
Class E (11110000--11111111 binary)
1-126 (00000001--01111110 binary)

14. If the first bit of the first octet is '0' what type of address is it?
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
N/a
Experimental Use
Class A (00000001--01111110 binary)

15. What is the default subnet mask for a Class E IP Address?
N/a
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 B (10000000--10111111 binary)
Class E (11110000--11111111 binary)

16. What is the IP address range for Class E?
240-255 (11110000--11111111 binary)
The last octet is 255. (Verify)
To send messages to all hosts on the network at the same time.
128-191 (10000000--10111111 binary)

17. What do you get when you set the Network portion of the address to 0s?
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)
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?

18. What is the Broadcast address used for?
To send messages to all hosts on the network at the same time.
Network address & Host address
Private Use Class C
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

19. What are Class E addresses reserved for?
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
Experimental Use
The Broadcast address for the associated network.
1-126 (00000001--01111110 binary)

20. What is 127.0.0.0 reserved for?
240-255 (11110000--11111111 binary)
Loopback
Class D (11100000--11101111 binary)
To send messages to all hosts on the network at the same time.

21. What is an address of 0.0.0.0 used for?

22. What is 127.16.0.0 to 127.31.255.255 reserved for?
Routers connected to the Internet typically filter messages within these ranges and prevent them from being propagated to the Internet.
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
Network address & Host address
Private Use Class B

23. What is 192.168.0.0 to 192.168.255.255 reserved for? reserved for?
Class C (11000000--11011111 binary)
Private Use Class C
Loopback
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

24. What is the characturistic of a network address?

25. If the first bits of the first octet are '10' what type of address is it?
255.255.255.0
224-239 (11100000--11101111 binary)
Routers connected to the Internet typically filter messages within these ranges and prevent them from being propagated to the Internet.
Class B (10000000--10111111 binary)

26. What is the IP address range for Class A?
1-126 (00000001--01111110 binary)
240-255 (11110000--11111111 binary)
Class E (11110000--11111111 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.

27. If the first bits of the first octet are '110' what type of address is it?
Class C (11000000--11011111 binary)
255.255.255.0
Routers connected to the Internet typically filter messages within these ranges and prevent them from being propagated to the Internet.
To send messages to all hosts on the network at the same time.

28. 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
255.255.0.0
255.0.0.0
Routers connected to the Internet typically filter messages within these ranges and prevent them from being propagated to the Internet.

29. If the first bits of the first octet are '1110' what type of address is it?
To send messages to all hosts on the network at the same time.
Private Use Class A
255.0.0.0
Class D (11100000--11101111 binary)

30. What is the IP address range for Class D?
Class B (10000000--10111111 binary)
Network address & Host address
Private Use Class A
224-239 (11100000--11101111 binary)

31. If the first bits of the first octet are '1111' what type of address is it?
Class E (11110000--11111111 binary)
255.255.0.0
Class A (00000001--01111110 binary)
Experimental Use