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ChatGPT Uploaded image ChatGPT Let's analyze the subnets provided in the image to identify which ones contain errors: Subnet A: IP address: 1 9 2

ChatGPT
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ChatGPT
Let's analyze the subnets provided in the image to identify which ones contain errors:
Subnet A:
IP address: 192.168.40.75/27
Subnet mask: 255.255.255.224
Network address: 192.168.40.64
Host address: 192.168.40.68
Broadcast address: 192.168.40.95
Validation:
Subnet mask /27 means 255.255.255.224
Network address: 192.168.40.64(correct)
Broadcast address: 192.168.40.95(correct)
Host address: 192.168.40.68(correct)
Subnet A seems correct.
Subnet B:
IP address: 192.168.40.124/26
Subnet mask: 255.255.255.128
Network address: 192.168.40.64
Host address: 192.168.40.125
Broadcast address: 192.168.40.127
Validation:
Subnet mask /26 means 255.255.255.192(not 128)
Correct /26 mask is 255.255.255.192, making the network address 192.168.40.64.
With the correct mask, broadcast address should be 192.168.40.127(still incorrect)
Host address can be correct within this range but needs subnet correction.
Subnet B has multiple errors.
Subnet C:
IP address: 10.15.68.66/15
Subnet mask: 255.254.0.0
Network address: 10.14.0.0
Host address: 10.15.255.1
Broadcast address: 10.16.255.255
Validation:
Subnet mask /15 means 255.254.0.0
Network address: 10.14.0.0(correct)
Broadcast address: 10.15.255.255(correct)
Host address: 10.15.255.1(correct)
Subnet C seems correct.
Subnet D:
IP address: 172.16.89.45/20
Subnet mask: 255.255.240.0
Network address: 172.16.88.0
Host address: 172.16.98.1
Broadcast address: 172.16.95.255
Validation:
Subnet mask /20 means 255.255.240.0
Network address: 172.16.80.0(correct)
Broadcast address: 172.16.95.255(correct)
Host address: 172.16.98.1(not in this range)
Subnet D has errors.
Subnet E:
IP address: 172.16.35.45/20
Subnet mask: 255.255.240.0
Network address: 172.16.40.9
Host address: 172.16.33.200
Broadcast address: 172.16.47.255
Validation:
Subnet mask /20 means 255.255.240.0
Network address: 172.16.32.0(should be)
Broadcast address: 172.16.47.255(correct)
Host address: 172.16.33.200(correct within this range)
Subnet E has errors.
Conclusion:
Subnets B, D, and E each have more than one error.
Chose one
ChatGPT
Let's focus on Subnet B for a detailed analysis of its errors:
Subnet B:
IP address: 192.168.40.124/26
Subnet mask: 255.255.255.128
Network address: 192.168.40.64
Host address: 192.168.40.125
Broadcast address: 192.168.40.127
Issues Identified:
Subnet Mask: The provided subnet mask of 255.255.255.128 is incorrect for a /26 prefix. The correct subnet mask for a /26 prefix should be 255.255.255.192.
Network Address: The network address calculation is incorrect due to the wrong subnet mask. With the correct subnet mask of 255.255.255.192, the network address should be 192.168.40.64.
Broadcast Address: The provided broadcast address 192.168.40.127 is correct for the range but not matching the correct mask of /26. The correct broadcast address should be 192.168.40.127 with the correct subnet mask.
Host Address: The host address given is 192.168.40.125, which can be valid within the corrected subnet range (192.168.40.64/26).
Correct Calculation for Subnet B with /26:
Subnet mask for /26: 255.255.255.192
Correct Network address: 192.168.40.64
Correct Broadcast address: 192.168.40.127
Valid host range: 192.168.40.65 to 192.168.40.126
Errors in Subnet B:
Subnet mask should be 255.255.255.192, not 255.255.255.128.
The network address is calculated correctly but is based on the wrong subnet mask, leading to confusion.
Host address and broadcast address would remain correct if recalculated with the proper subnet mask.
Conclusion:
Subnet B has more than one error related to subnet mask and network address calculations.
Uploaded image
ChatGPT
Let's analyze the broadcast addresses for the subnets in the new image to determine which one has an incorrect broadcast address.
Subnet A:
IP address: 192.168.40.75/28
Subnet mask: 255.255.255.240
Network address: 192.168.40.64
Host address: 192.168.40.65
Broadcast address: 192.168.40.79
Validation:
Subnet mask /28 means 255.255.255.240
Network address: 192.168.40.64
Broadcast address: 192.168.40.79(correct)
Subnet A has the correct broadcast address.
Subnet B:
IP address: 192.168.40.124/27
Subnet mask: 255.255.255.224
Network address: 192.168.40.96
Host address: 192.168.40.100
Broadcast address: 192.168.40.95
Validation:
Subnet mask /27 means 255.255.255.224
Network address: 192.168.40.96
Broadcast address: 192.168.40.127(the correct broadcast address should be 192.168.40.127, not 192.168.40.95)
Subnet B has an incorrect broadcast address.
Subnet C:
IP address: 10.15.68.66/14
Subnet mask: 255.252.0.0
Network address: 10.12.0.0
Host address: 10.11.0.1
Broadcast address: 10.15.25

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