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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 do you get if you set the Host address to all one?
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
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.
255.0.0.0

2. What does the subnet mask and/or the address class specify?
Multicast groups
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
Experimental Use
Private Use Class A

3. What is the default subnet mask for a Class A IP Address?
255.0.0.0
128-191 (10000000--10111111 binary)
Experimental Use
Class D (11100000--11101111 binary)

4. What are the two parts of an IP address?
Class B (10000000--10111111 binary)
Private Use Class B
Network address & Host address
255.255.255.0

5. If the first bits of the first octet are '1110' what type of address is it?
Class D (11100000--11101111 binary)
Private Use Class C
128-191 (10000000--10111111 binary)
Private Use Class B

6. What is the IP address range for Class D?
1-126 (00000001--01111110 binary)
Private Use 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
224-239 (11100000--11101111 binary)

7. How do routers generally handle Private use addresses?
192-223 (11000000--11011111 binary)
Routers connected to the Internet typically filter messages within these ranges and prevent them from being propagated to the Internet.
Private Use Class C
N/a

8. What are Class E addresses reserved for?
N/a
Experimental Use
255.0.0.0
192-223 (11000000--11011111 binary)

9. What is the IP address range for Class B?
Experimental Use
N/a
255.0.0.0
128-191 (10000000--10111111 binary)

10. What is an address of 0.0.0.0 used for?

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11. If the first bits of the first octet are '1111' what type of address is it?
To send messages to all hosts on the network at the same time.
Class E (11110000--11111111 binary)
1-126 (00000001--01111110 binary)
128-191 (10000000--10111111 binary)

12. If the first bit of the first octet is '0' what type of address is it?
To send messages to all hosts on the network at the same time.
255.255.0.0
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)

13. If the first bits of the first octet are '10' what type of address is it?
128-191 (10000000--10111111 binary)
Class B (10000000--10111111 binary)
Multicast groups
Experimental Use

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

15. What is 127.0.0.0 reserved for?
128-191 (10000000--10111111 binary)
Loopback
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)

16. What is the default subnet mask for a Class C IP Address?
255.255.255.0
Class E (11110000--11111111 binary)
Class C (11000000--11011111 binary)
Class A (00000001--01111110 binary)

17. What is 10.0.0.0 to 10.255.255.55 reserved for?
224-239 (11100000--11101111 binary)
Private Use Class A
N/a
1-126 (00000001--01111110 binary)

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

20. What do you get when you set the Network portion of the address to 0s?
The last octet is 255. (Verify)
240-255 (11110000--11111111 binary)
The Host address on the local network?
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.

21. What are Class D addresses reserved for?
Private Use Class A
Experimental Use
N/a
Multicast groups

22. What is the default subnet mask for a Class E IP Address?
Private Use Class C
Multicast groups
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

23. What is the characturistic of a network address?

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24. What is 192.168.0.0 to 192.168.255.255 reserved for? reserved for?
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 C
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

25. What is the default subnet mask for a Class B IP Address?
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 B
Class A (00000001--01111110 binary)
255.255.0.0

26. What is the IP address range for Class E?
Class E (11110000--11111111 binary)
240-255 (11110000--11111111 binary)
Experimental Use
Private Use Class C

27. What is the default subnet mask for a Class D IP Address?
The last octet is 255. (Verify)
255.255.255.0
N/a
Class C (11000000--11011111 binary)

28. What is 127.16.0.0 to 127.31.255.255 reserved for?
Class B (10000000--10111111 binary)
Routers connected to the Internet typically filter messages within these ranges and prevent them from being propagated to the Internet.
Private Use Class B
The last octet is 255. (Verify)

29. If the first bits of the first octet are '110' what type of address is it?
Class C (11000000--11011111 binary)
Class A (00000001--01111110 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.

30. What do you see in a Broadcast address regardless of format?
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.
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

31. What is the IP address range for Class A?
Private Use Class B
Loopback
The Host address on the local network?
1-126 (00000001--01111110 binary)