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Cisco Certification IP Address

Instructions:

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 does the subnet mask and/or the address class specify?
Class A (00000001--01111110 binary)
The Broadcast address for the associated network.
255.0.0.0
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

2. What is the IP address range for Class B?
Class B (10000000--10111111 binary)
1-126 (00000001--01111110 binary)
Network address & Host address
128-191 (10000000--10111111 binary)

3. What is the IP address range for Class A?
Class A (00000001--01111110 binary)
1-126 (00000001--01111110 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.
Routers connected to the Internet typically filter messages within these ranges and prevent them from being propagated to the Internet.

4. If the first bits of the first octet are '110' what type of address is it?
Experimental Use
Multicast groups
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 C (11000000--11011111 binary)

5. What do you get if you set the Host address to all one?
224-239 (11100000--11101111 binary)
The Host address on the local network?
The Broadcast address for the associated network.
To send messages to all hosts on the network at the same time.

6. What are the two parts of an IP address?
Network address & Host address
The Broadcast address for the associated network.
240-255 (11110000--11111111 binary)
Class A (00000001--01111110 binary)

7. What do you get when you set the Network portion of the address to 0s?
Loopback
N/a
The Host address on the local network?
Network address & Host address

8. What are Class D addresses reserved for?
N/a
Multicast groups
224-239 (11100000--11101111 binary)
Class D (11100000--11101111 binary)

9. What is 10.0.0.0 to 10.255.255.55 reserved for?
Class E (11110000--11111111 binary)
Class A (00000001--01111110 binary)
Private Use Class 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

10. What is the default subnet mask for a Class B IP Address?
Private Use Class C
Class A (00000001--01111110 binary)
255.255.0.0
The last octet is 255. (Verify)

11. What is the default subnet mask for a Class A 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 E (11110000--11111111 binary)
255.0.0.0
Routers connected to the Internet typically filter messages within these ranges and prevent them from being propagated to the Internet.

12. If the first bits of the first octet are '1111' what type of address is it?
N/a
Class E (11110000--11111111 binary)
The last octet is 255. (Verify)
Class D (11100000--11101111 binary)

13. What is the IP address range for Class E?
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
240-255 (11110000--11111111 binary)
255.0.0.0
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.

14. What is the default subnet mask for a Class C IP Address?
255.255.255.0
255.255.0.0
255.0.0.0
The Broadcast address for the associated network.

15. What do you see in a Broadcast address regardless of format?
255.255.255.0
The last octet is 255. (Verify)
Private Use Class 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

16. What is the default subnet mask for a Class E IP Address?
Class D (11100000--11101111 binary)
255.0.0.0
N/a
Private Use Class B

17. What is the Broadcast address used for?
Multicast groups
To send messages to all hosts on the network at the same time.
N/a
Class C (11000000--11011111 binary)

18. What is the default subnet mask for a Class D 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
Class D (11100000--11101111 binary)
Private Use Class C
N/a

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

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20. If the first bit of the first octet is '0' what type of address is it?
255.255.0.0
Experimental Use
Routers connected to the Internet typically filter messages within these ranges and prevent them from being propagated to the Internet.
Class A (00000001--01111110 binary)

21. What is the characturistic of a network address?

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22. What are Class E addresses reserved for?
Experimental Use
Class A (00000001--01111110 binary)
Network address & Host address
255.0.0.0

23. What is 127.0.0.0 reserved for?
The last octet is 255. (Verify)
Loopback
Class E (11110000--11111111 binary)
Experimental Use

24. If the first bits of the first octet are '10' what type of address is it?
Class D (11100000--11101111 binary)
Class B (10000000--10111111 binary)
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

25. What is the IP address range for Class D?
224-239 (11100000--11101111 binary)
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
N/a
240-255 (11110000--11111111 binary)

26. What is 192.168.0.0 to 192.168.255.255 reserved for? reserved for?
Private Use Class B
255.255.0.0
Private Use Class A
Private Use Class C

27. If the first bits of the first octet are '1110' what type of address is it?
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)
Class A (00000001--01111110 binary)
192-223 (11000000--11011111 binary)

28. What is 127.16.0.0 to 127.31.255.255 reserved for?
240-255 (11110000--11111111 binary)
128-191 (10000000--10111111 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
Private Use Class B

29. 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
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
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

30. What is an address of 0.0.0.0 used for?

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31. What is the IP address range for Class C?
Network address & Host address
255.255.0.0
192-223 (11000000--11011111 binary)
N/a