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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?
192-223 (11000000--11011111 binary)
128-191 (10000000--10111111 binary)
Class D (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

2. What is the IP address range for Class A?
1-126 (00000001--01111110 binary)
The last octet is 255. (Verify)
Private Use Class A
Routers connected to the Internet typically filter messages within these ranges and prevent them from being propagated to the Internet.

3. What is the default subnet mask for a Class B IP Address?
The Host address on the local network?
Private Use Class A
255.255.0.0
1-126 (00000001--01111110 binary)

4. What is the default subnet mask for a Class A IP Address?
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.
255.0.0.0

5. If the first bits of the first octet are '1110' what type of address is it?
255.0.0.0
Class D (11100000--11101111 binary)
The Host address on the local network?
1-126 (00000001--01111110 binary)

6. What is the default subnet mask for a Class C 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
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.
255.255.255.0
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

7. How do routers generally handle Private use addresses?
Class C (11000000--11011111 binary)
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.
Class E (11110000--11111111 binary)

8. If the first bit of the first octet is '0' what type of address is it?
Class A (00000001--01111110 binary)
Class D (11100000--11101111 binary)
To send messages to all hosts on the network at the same time.
Experimental Use

9. What are Class E addresses reserved for?
Experimental Use
Class A (00000001--01111110 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
Multicast groups

10. What is the default subnet mask for a Class E IP Address?
The Broadcast address for the associated network.
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.
N/a

11. What is 192.168.0.0 to 192.168.255.255 reserved for? reserved for?
Private Use Class A
Private Use Class C
240-255 (11110000--11111111 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

12. What are Class D 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
1-126 (00000001--01111110 binary)
Multicast groups
Routers connected to the Internet typically filter messages within these ranges and prevent them from being propagated to the Internet.

13. What do you get if you set the Host address to all one?
The Broadcast address for the associated network.
255.255.0.0
N/a
192-223 (11000000--11011111 binary)

14. If the first bits of the first octet are '10' what type of address is it?
224-239 (11100000--11101111 binary)
Class B (10000000--10111111 binary)
Private Use Class B
Loopback

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

16. What do you see in a Broadcast address regardless of format?
The last octet is 255. (Verify)
Private Use Class C
Class E (11110000--11111111 binary)
192-223 (11000000--11011111 binary)

17. If the first bits of the first octet are '1111' what type of address is it?
Class E (11110000--11111111 binary)
Class C (11000000--11011111 binary)
The last octet is 255. (Verify)
The Broadcast address for the associated network.

18. What is the IP address range for Class E?
240-255 (11110000--11111111 binary)
Multicast groups
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
Private Use Class A

19. What is the IP address range for Class B?
Network address & Host address
224-239 (11100000--11101111 binary)
128-191 (10000000--10111111 binary)
Class B (10000000--10111111 binary)

20. What is 10.0.0.0 to 10.255.255.55 reserved for?
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
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.
The Broadcast address for the associated network.

21. What is the characturistic of a network address?

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22. What is the default subnet mask for a Class D IP Address?
224-239 (11100000--11101111 binary)
Private Use Class C
Class C (11000000--11011111 binary)
N/a

23. What is the Broadcast address used for?
The Host address on the local 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
Multicast groups
To send messages to all hosts on the network at the same time.

24. What are the two parts of an IP address?
Private Use Class C
Network address & Host address
Routers connected to the Internet typically filter messages within these ranges and prevent them from being propagated to the Internet.
255.255.0.0

25. 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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26. If the first bits of the first octet are '110' what type of address is it?
Private Use Class B
Private Use Class A
Class C (11000000--11011111 binary)
N/a

27. What is an address of 0.0.0.0 used for?

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28. What is the IP address range for Class D?
224-239 (11100000--11101111 binary)
192-223 (11000000--11011111 binary)
The last octet is 255. (Verify)
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

29. What is 127.0.0.0 reserved for?
Network address & Host address
Class D (11100000--11101111 binary)
Loopback
Multicast groups

30. What do you get when you set the Network portion of the address to 0s?
Class B (10000000--10111111 binary)
Multicast groups
255.0.0.0
The Host address on the local network?

31. What is 127.16.0.0 to 127.31.255.255 reserved for?
Loopback
255.0.0.0
N/a
Private Use Class B