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Questions and Answers
What is the range for Class A IP addresses?
What is the range for Class A IP addresses?
What is the default subnet mask for Class B?
What is the default subnet mask for Class B?
Which of the following is a Private IP address range for Class C?
Which of the following is a Private IP address range for Class C?
What is the usable number of host IDs in Class A?
What is the usable number of host IDs in Class A?
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What is the range for Class D IP addresses?
What is the range for Class D IP addresses?
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What are the addresses set aside for research and experimentation?
What are the addresses set aside for research and experimentation?
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Match the following classes with their ranges:
Match the following classes with their ranges:
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What is the theoretical maximum number of separate addresses in IPv4?
What is the theoretical maximum number of separate addresses in IPv4?
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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
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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.
