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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 E (11110000--11111111 binary)
255.0.0.0
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

2. What is the IP address range for Class C?
To send messages to all hosts on the network at the same time.
Routers connected to the Internet typically filter messages within these ranges and prevent them from being propagated to the Internet.
255.255.255.0
192-223 (11000000--11011111 binary)

3. How do routers generally handle Private use addresses?
Private Use Class C
Routers connected to the Internet typically filter messages within these ranges and prevent them from being propagated to the Internet.
255.255.0.0
1-126 (00000001--01111110 binary)

4. What is the default subnet mask for a Class A IP Address?
Private Use Class A
Loopback
255.0.0.0
192-223 (11000000--11011111 binary)

5. 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
1-126 (00000001--01111110 binary)
128-191 (10000000--10111111 binary)
240-255 (11110000--11111111 binary)

6. What is the default subnet mask for a Class C IP Address?
224-239 (11100000--11101111 binary)
The Host address on the local network?
255.255.255.0
N/a

7. If the first bit of the first octet is '0' what type of address is it?
Multicast groups
Loopback
Class A (00000001--01111110 binary)
Experimental Use

8. What is the IP address range for Class A?
255.0.0.0
Class D (11100000--11101111 binary)
Experimental Use
1-126 (00000001--01111110 binary)

9. What are Class E addresses reserved for?
Private Use Class A
255.255.255.0
Class B (10000000--10111111 binary)
Experimental Use

10. What is the default subnet mask for a Class D IP Address?
N/a
Private Use Class B
224-239 (11100000--11101111 binary)
Class E (11110000--11111111 binary)

11. What are Class D addresses reserved for?
Multicast groups
192-223 (11000000--11011111 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 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 is 127.16.0.0 to 127.31.255.255 reserved for?
Private Use Class B
Private Use Class C
Loopback
Private Use Class A

13. What is an address of 0.0.0.0 used for?

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14. What is the IP address range for Class B?
128-191 (10000000--10111111 binary)
Class E (11110000--11111111 binary)
Private Use Class 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

15. What is 127.0.0.0 reserved for?
Loopback
1-126 (00000001--01111110 binary)
The last octet is 255. (Verify)
Multicast groups

16. If the first bits of the first octet are '10' what type of address is it?
Class B (10000000--10111111 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.
The last octet is 255. (Verify)

17. If the first bits of the first octet are '110' what type of address is it?
Class B (10000000--10111111 binary)
N/a
Class C (11000000--11011111 binary)
Multicast groups

18. 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
Class A (00000001--01111110 binary)
The Broadcast address for the associated 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.

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

20. What is the Broadcast address used for?
The Host address on the local network?
Class A (00000001--01111110 binary)
To send messages to all hosts on the network at the same time.
The last octet is 255. (Verify)

21. What is the default subnet mask for a Class B IP Address?
The Broadcast address for the associated network.
255.255.0.0
N/a
Private Use Class A

22. What is 10.0.0.0 to 10.255.255.55 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
Private Use Class A
255.0.0.0
128-191 (10000000--10111111 binary)

23. 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
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.

24. What do you get when you set the Network portion of the address to 0s?
Private Use Class C
The Host address on the local network?
Class C (11000000--11011111 binary)
224-239 (11100000--11101111 binary)

25. What is the default subnet mask for a Class E IP Address?
N/a
1-126 (00000001--01111110 binary)
The last octet is 255. (Verify)
Class D (11100000--11101111 binary)

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

27. If the first bits of the first octet are '1110' what type of address is it?
Class D (11100000--11101111 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
255.255.0.0
Private Use Class A

28. What is the characturistic of a network address?

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29. What do you see in a Broadcast address regardless of format?
Multicast groups
The last octet is 255. (Verify)
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.
255.0.0.0

30. What is 192.168.0.0 to 192.168.255.255 reserved for? reserved for?
The last octet is 255. (Verify)
192-223 (11000000--11011111 binary)
Multicast groups
Private Use Class C

31. 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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