How can filtering augment some of the security limitations of WEP in a WLAN?

How can filtering augment some of the security limitations of WEP in a WLAN?

• A. By defining parameters to which client stations must adhere in order to gain access to the network
• B. By enabling open authentication
• C. By filtering based on MAC addresses
• D. By increasing beacon interval

Answer: (A)

Filtering adds an access-control gate to a WLAN, restricting who can even join the network by requiring client devices to meet defined criteria before they can authenticate or associate. In the context of WEP’s weaknesses—weak authentication and lack of robust access control—this gate helps because only devices that conform to the preset parameters are allowed to attempt use of the network, which reduces the chance of an attacker merely grabbing traffic or using a copied key. The idea captured here is that you implement rules or requirements that devices must satisfy to gain access, adding a layer of control beyond what WEP provides.

Enabling open authentication would remove that gate entirely, making security weaker. Increasing the beacon interval doesn’t affect access control or encryption in any meaningful way. Filtering based on MAC addresses is a concrete way to implement this gate, but it’s only one specific technique and can be spoofed; the broader concept is about enforcing predefined access requirements, which is why the stated option is the best fit.