Certified Information Systems Auditor CISA · Free Practice Question Easy
Question 43
What is the purpose of MAC filtering in wireless network security?
- A A) Restrict access to selected and authorized devices
- B B) Encrypt data sent through the wireless network
- C C) Disable the broadcasting of SSID
- D D) Automatically assign IP addresses to connected devices
Reveal correct answer
Correct answer: A
Explanation
Correct answer: A) Restrict access to selected and authorized devices Explanation: MAC filtering in wireless network security allows access only to selected and authorized devices. By configuring the router to enable MAC filtering, the network restricts access to devices whose MAC addresses have been specified. This control helps prevent unauthorized devices from accessing the network. Incorrect options explanation: B) Encrypt data sent through the wireless network: Encryption, not MAC filtering, is responsible for scrambling data and protecting it from unauthorized access. C) Disable the broadcasting of SSID: Disabling the broadcasting of SSID is a separate control and does not relate to MAC filtering. D) Automatically assign IP addresses to connected devices: Automatic IP address assignment is managed by DHCP, not MAC filtering.Discussion
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