Ethical Hacking Essentials Practice Test

Which technique is commonly used to mitigate unauthorized access by changing security codes periodically in wireless networks?

1. WEP encryption

2. MAC address filtering

3. Dynamic key generation

4. Static IP assignment

The correct answer is: Dynamic key generation

Dynamic key generation is a commonly used technique for mitigating unauthorized access in wireless networks by periodically changing security codes or encryption keys. This process enhances security by ensuring that even if an unauthorized user gains access to the network, their success would be temporary because the keys would change frequently. Dynamic key generation typically involves the use of protocols such as WPA (Wi-Fi Protected Access) and WPA2, which automatically generate new keys based on session parameters or time intervals. This minimizes the risk of key compromise since the static nature of passwords or keys is avoided. In the context of securing wireless networks, relying on static methods such as WEP encryption or MAC address filtering can introduce vulnerabilities. WEP, for instance, is known for being weak and outdated, while MAC address filtering can be bypassed easily by attackers who spoof their device's MAC address. Static IP assignment does not provide any security against unauthorized access and is more of a network management technique than a security measure.