Which wireless security technology requires a long passphrase with characters, letters, numbers, and symbols?

WPA2 PSK (Wi-Fi Protected Access 2 Pre-Shared Key) is designed to enhance wireless network security, and it requires a strong, long passphrase that includes a combination of characters, letters, numbers, and symbols. This complexity is crucial because it increases the key's entropy, making it significantly harder for unauthorized users to gain access through brute-force attacks.

In WPA2 PSK, the passphrase is used to generate a session key that encrypts the data transmitted between the wireless devices and the access point, adding a layer of confidentiality. The strength of the passphrase directly impacts the overall security of the wireless network, emphasizing the importance of using a complex string for this purpose.

Other options like WEP and MAC Filtering do not require such a long or complex passphrase and do not provide the same level of security as WPA2 PSK. WEP uses a static key, which is much weaker, whereas MAC Filtering relies on allowing or denying access based on hardware addresses, which can be spoofed easily. WPA2 Enterprise also provides robust security, but it uses a different authentication method involving a RADIUS server instead of a pre-shared key.