Wireless Network Security: Prevent Unauthorized Devices from Consuming Bandwidth

Methods to Ensure Limited Internet Bandwidth Access

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Question

A shop owner wants to ensure that only a specified group of devices can access the wireless network.

Which of the following methodologies will BEST ensure unauthorized devices cannot consume the shop owner's limited Internet bandwidth?

A.

Disable the SSID broadcast. B.

Implement WEP authentication. C.

Change the WiFi password. D.

Activate MAC address filtering.

D.

Explanations

A shop owner wants to ensure that only a specified group of devices can access the wireless network.

Which of the following methodologies will BEST ensure unauthorized devices cannot consume the shop owner's limited Internet bandwidth?

A.

Disable the SSID broadcast.

B.

Implement WEP authentication.

C.

Change the WiFi password.

D.

Activate MAC address filtering.

D.

The BEST methodology to ensure that only a specified group of devices can access a wireless network while preventing unauthorized devices from consuming the shop owner's limited internet bandwidth is by activating MAC address filtering.

MAC (Media Access Control) address filtering is a technique that allows only devices with specific MAC addresses to access the wireless network. A MAC address is a unique identifier that is assigned to each network interface controller (NIC) of a device. When MAC address filtering is enabled, the wireless access point (WAP) checks the MAC address of each device that attempts to connect to the network. If the MAC address of the device is on the approved list, the WAP allows it to connect; otherwise, it denies access.

Disabling the SSID (Service Set Identifier) broadcast hides the network name, making it more difficult for unauthorized devices to connect. However, this method is not very effective as the SSID can be easily discovered by using a wireless sniffer tool.

WEP (Wired Equivalent Privacy) is an outdated wireless security protocol that can be easily hacked, and therefore, it is not a reliable method to ensure network security.

Changing the WiFi password may prevent unauthorized users from connecting to the network if the password is strong enough. However, it does not prevent authorized users from sharing the password with others, and it does not protect against MAC address spoofing attacks.

In summary, activating MAC address filtering is the most effective way to ensure that only a specified group of devices can access the wireless network and prevent unauthorized devices from consuming the shop owner's limited internet bandwidth.