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N10-005 · Question #340

A user reports that they are unable to connect to the network. Upon further investigation, a technician notices that the user has an IP address/subnet mask combination of 192.168.204.255/24. The…

The correct answer is C. 192.168.204.112/24. The IP address 192.168.204.255/24 is the broadcast address of the network and cannot be assigned to a host; a valid host address in the same /24 subnet as the gateway must be chosen.

Network troubleshooting

Question

A user reports that they are unable to connect to the network. Upon further investigation, a technician notices that the user has an IP address/subnet mask combination of 192.168.204.255/24. The default gateway for the network is 192.168.204.254. Which of the following could the user's IP address be changed to so that they could connect to the network?

Options

  • A192.168.204.0/27
  • B192.168.204.1/27
  • C192.168.204.112/24
  • D192.168.204.254/24

How the community answered

(26 responses)
  • A
    4% (1)
  • B
    4% (1)
  • C
    85% (22)
  • D
    8% (2)

Why each option

The IP address 192.168.204.255/24 is the broadcast address of the network and cannot be assigned to a host; a valid host address in the same /24 subnet as the gateway must be chosen.

A192.168.204.0/27

192.168.204.0/27 is the network address of the 192.168.204.0/27 subnet and cannot be assigned to a host.

B192.168.204.1/27

192.168.204.1/27 places the host in the /27 subnet (range .0-.31), which does not include the default gateway at .254, making the gateway unreachable.

C192.168.204.112/24Correct

192.168.204.112/24 is a valid host address within the 192.168.204.0/24 network, the same subnet as the default gateway at 192.168.204.254. The address is not a network address, broadcast address, or already-assigned gateway address, making it a usable and routable host IP.

D192.168.204.254/24

192.168.204.254/24 is already assigned as the default gateway and assigning it to the user would create an IP conflict.

Concept tested: Valid host IP addressing and subnet boundaries

Source: https://learn.microsoft.com/en-us/troubleshoot/windows-client/networking/tcpip-addressing-and-subnetting

Topics

#IP addressing#subnetting#broadcast address#valid host range

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