N10-009 · Question #387
Some of the 20 employees who use the wireless network report they are unable to access network resources even though the wireless network is available. An administrator recently made the following…
The correct answer is C. Incorrect subnet mask. The subnet mask 255.255.255.240 allows for only 14 usable host IP addresses per subnet (since 2 IP addresses are reserved for network and broadcast addresses), but the administrator has 20 employees using the wireless network. This means that there are not enough IP addresses…
Question
Some of the 20 employees who use the wireless network report they are unable to access network resources even though the wireless network is available. An administrator recently made the following configuration changes to the wireless DHCP server:
Network: 192.168.100.0 Mask: 255.255.255.240 Gateway: 192.168.100.1 Which of the following is the cause of this issue?
Options
- AIncorrect VLAN assignment
- BIncorrect ACL configuration
- CIncorrect subnet mask
- DIncorrect default gateway
How the community answered
(33 responses)- A9% (3)
- B6% (2)
- C61% (20)
- D24% (8)
Explanation
The subnet mask 255.255.255.240 allows for only 14 usable host IP addresses per subnet (since 2 IP addresses are reserved for network and broadcast addresses), but the administrator has 20 employees using the wireless network. This means that there are not enough IP addresses available within the subnet for all users to get a valid address. To accommodate 20 devices, a subnet mask of 255.255.255.224 (which provides 30 usable IP addresses) would be needed instead.
Community Discussion
No community discussion yet for this question.