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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 are Class E addresses reserved for?
Multicast groups
Experimental Use
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.

2. What is the characturistic of a network address?

3. What is the default subnet mask for a Class B IP Address?
224-239 (11100000--11101111 binary)
The Broadcast address for the associated network.
1-126 (00000001--01111110 binary)
255.255.0.0

4. What is 127.16.0.0 to 127.31.255.255 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
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
Private Use Class B

5. What is an address of 0.0.0.0 used for?

6. What do you get when you set the Network portion of the address to 0s?
Multicast groups
255.255.0.0
1-126 (00000001--01111110 binary)
The Host address on the local network?

7. What is the IP address range for Class A?
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 A (00000001--01111110 binary)
1-126 (00000001--01111110 binary)

8. What is the default subnet mask for a Class A IP Address?
Private Use Class C
255.255.255.0
255.0.0.0
Network address & Host address

9. What is the default subnet mask for a Class D IP Address?
Class B (10000000--10111111 binary)
Class D (11100000--11101111 binary)
N/a
Routers connected to the Internet typically filter messages within these ranges and prevent them from being propagated to the Internet.

10. If the first bits of the first octet are '10' what type of address is it?
Class B (10000000--10111111 binary)
To send messages to all hosts on the network at the same time.
255.255.255.0
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

11. If the first bits of the first octet are '1111' what type of address is it?
192-223 (11000000--11011111 binary)
255.255.255.0
Class C (11000000--11011111 binary)
Class E (11110000--11111111 binary)

12. What are Class D addresses reserved for?
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
Class E (11110000--11111111 binary)
1-126 (00000001--01111110 binary)

13. What is the Broadcast address used for?
192-223 (11000000--11011111 binary)
To send messages to all hosts on the network at the same time.
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

14. If the first bits of the first octet are '1110' what type of address is it?
Class E (11110000--11111111 binary)
Class C (11000000--11011111 binary)
Class B (10000000--10111111 binary)
Class D (11100000--11101111 binary)

15. What is the default subnet mask for a Class E IP Address?
N/a
To send messages to all hosts on the network at the same time.
Class D (11100000--11101111 binary)
255.255.255.0

16. What do you get if you set the Host address to all one?
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
Class B (10000000--10111111 binary)
The Broadcast address for the associated network.

17. What does the subnet mask and/or the address class specify?
255.255.255.0
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 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

18. What do you see in a Broadcast address regardless of format?
The last octet is 255. (Verify)
The Host address on the local network?
Experimental Use
Private Use Class A

19. If the first bits of the first octet are '110' what type of address is it?
Class C (11000000--11011111 binary)
Loopback
Private Use Class C
255.255.255.0

20. What is 192.168.0.0 to 192.168.255.255 reserved for? reserved for?
Private Use Class C
Class A (00000001--01111110 binary)
240-255 (11110000--11111111 binary)
Multicast groups

21. What are the two parts of an IP address?
240-255 (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.
Network address & Host address
Class E (11110000--11111111 binary)

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

23. What is 127.0.0.0 reserved for?
240-255 (11110000--11111111 binary)
192-223 (11000000--11011111 binary)
Experimental Use
Loopback

24. If the first bit of the first octet is '0' what type of address is it?
Loopback
Class C (11000000--11011111 binary)
Class A (00000001--01111110 binary)
Class D (11100000--11101111 binary)

25. What is the IP address range for Class D?
Multicast groups
N/a
224-239 (11100000--11101111 binary)
Private Use Class B

26. What is the IP address range for Class B?
Class C (11000000--11011111 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.
128-191 (10000000--10111111 binary)
N/a

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

28. What is the default subnet mask for a Class C 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
Network address & Host address
Experimental Use
255.255.255.0

29. What is the IP address range for Class C?
Private Use Class B
N/a
192-223 (11000000--11011111 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

30. 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.
The Host address on the local network?
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
192-223 (11000000--11011111 binary)

31. What is 10.0.0.0 to 10.255.255.55 reserved for?
Class C (11000000--11011111 binary)
Network address & Host address
240-255 (11110000--11111111 binary)
Private Use Class A