220-801 · Question #718
Which of the following needs to be configured on a wireless router to allow specific client machines to connect?
The correct answer is C. MAC filtering. MAC filtering on a wireless router creates an allowlist or denylist of device hardware addresses, controlling which specific client machines are permitted to connect to the network.
Question
Which of the following needs to be configured on a wireless router to allow specific client machines to connect?
Options
- APort forwarding
- BWPS
- CMAC filtering
- DDMZ
How the community answered
(35 responses)- A3% (1)
- B6% (2)
- C89% (31)
- D3% (1)
Why each option
MAC filtering on a wireless router creates an allowlist or denylist of device hardware addresses, controlling which specific client machines are permitted to connect to the network.
Port forwarding maps incoming traffic on specific ports to internal IP addresses, enabling external access to internal services - it does not control which clients can connect.
WPS (Wi-Fi Protected Setup) simplifies the process of connecting devices using a PIN or push-button method but does not restrict or specify which devices may connect.
Every network adapter has a unique 48-bit MAC address burned into its hardware. MAC filtering on a wireless router checks each connecting client's MAC address against a configured list and allows or denies the connection accordingly. This restricts network access to only the specific devices whose MAC addresses are on the approved list.
A DMZ places a host outside the firewall to expose it to all external traffic, which is the opposite of restricting access.
Concept tested: Wireless MAC filtering for client access control
Source: https://support.microsoft.com/en-us/windows/setting-up-a-wireless-network-b3e8c93f-3d28-b5f4-d26c-9a36e6ffc4b0
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