IPv4 Addressing Scheme Flashcards

Questions and Answers

What is the range for Class A IP addresses?

128.0.0.0 to 191.255.255.255

224.0.0.0 to 230.43.160.48

192.0.0.0 to 223.255.255.255

0.0.0.0 to 127.255.255.255 (correct)

What is the default subnet mask for Class B?

255.0.0.0

255.255.255.0

255.255.255.255

255.255.0.0 (correct)

Which of the following is a Private IP address range for Class C?

192.168.0.0 to 192.168.255.255 (correct)

172.16.0.0 to 172.31.255.255

169.254.0.0 to 169.254.255.255

10.0.0.0 to 10.255.255.255

What is the usable number of host IDs in Class A?

16,277,214 Signup and view all the answers

What is the range for Class D IP addresses?

224.0.0.0 to 230.43.160.48 Signup and view all the answers

What are the addresses set aside for research and experimentation?

Class E Signup and view all the answers

Match the following classes with their ranges:

Class A = 0.0.0.0 to 127.255.255.255 Class B = 128.0.0.0 to 191.255.255.255 Class C = 192.0.0.0 to 223.255.255.255 Class D = 224.0.0.0 to 230.43.160.48 Class E = 240.0.0.0 to 250.217.39.190 Signup and view all the answers

What is the theoretical maximum number of separate addresses in IPv4?

approximately 4,295 billion Signup and view all the answers

Study Notes

Class A

Range: 0.0.0.0 to 127.255.255.255
Private IP range: 10.0.0.0 to 10.255.255.255
Loopback range: 127.0.0.0 to 127.255.255.255
8 bits for network address and 24 bits for host address
First octet pattern: 0xxx.xxx, indicating Class A
Usable Network ID bits: 7 (8-1)
Possible Network IDs: 126 (2^7 - 2)
Possible Host IDs: 16,277,214 (2^24 - 2)
Reserved addresses: 0 and 127 cannot be used for regular IP addresses
Default subnet mask: 255.0.0.0

Class B

Range: 128.0.0.0 to 191.255.255.255
Private IP range: 172.16.0.0 to 172.31.255.255
Automatic Private IP Addressing (APIPA): 169.254.0.0 to 169.254.255.255
First octet pattern: 10xx.xxx, indicating Class B
Usable Network ID bits: 14 (16-2)
Possible Network IDs: 16,384 (2^14)
Possible Host IDs: 65,534 (2^16 - 2)
Default subnet mask: 255.255.0.0

Class C

Range: 192.0.0.0 to 223.255.255.255
Private IP range: 192.168.0.0 to 192.168.255.255
First octet pattern: 110x.xxx, indicating Class C
Usable Network ID bits: 21 (24-3)
Possible Network IDs: 2,097,152 (2^21)
Possible Host IDs: 254 (2^8 - 2)
Default subnet mask: 255.255.255.0

Class D

Range: 224.0.0.0 to 230.43.160.48
Reserved for IP multicast addresses
Default subnet mask: 239.255.255.255

Class E

Range: 240.0.0.0 to 250.217.39.190
Addresses set aside for research and experimentation
Default subnet mask: 255.255.255.255

Private IP Addresses

Class A: 10.0.0.0 to 10.255.255.255
Class B: 172.16.0.0 to 172.31.255.255
Class C: 192.168.0.0 to 192.168.255.255

IPv4 Address Space Limitations

32-bit IP address space allows approx. 4.295 billion unique addresses (2^32)
Fixed classes result in unavailable node addresses between classes or subnets
Limited number of node addresses leads to inefficient IP address allocation
Class A and Class B IP addresses are becoming depleted
Unassigned and unused addresses within existing Class A and Class B blocks exist

Description

Test your knowledge of Class A IP addresses with these flashcards. Explore the range, network bits, and reserved addresses, and understand key aspects of IPv4 addressing. Perfect for students and professionals alike who want to reinforce their understanding of networking concepts.