WPA2 Encryption
Question
Which of the following encryption methods is used by WPA2 to improve data security as compared to previous wireless encryption protocols?
Answers
Explanations
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A. B. C. D.A.
The correct answer is A. AES.
WPA2 (Wi-Fi Protected Access II) is a security protocol used in wireless networks to secure communication between the wireless access point (AP) and the client devices. WPA2 replaces the previous encryption protocol, WPA, which was an interim solution to the security issues of the original WEP (Wired Equivalent Privacy) protocol.
WPA2 uses two encryption methods: AES (Advanced Encryption Standard) and TKIP (Temporal Key Integrity Protocol). AES is a stronger encryption method than TKIP and is recommended for better security.
AES is a symmetric encryption algorithm, which means that the same key is used for both encryption and decryption. It uses a block cipher that operates on blocks of 128 bits and has three key sizes: 128 bits, 192 bits, and 256 bits. AES is widely used in various applications, including wireless networks, due to its high level of security and efficiency.
TKIP, on the other hand, is an older encryption method that is used for backward compatibility with older devices that do not support AES. TKIP uses a different encryption key for each packet of data, which makes it more secure than WEP but less secure than AES.
S/MIME (Secure/Multipurpose Internet Mail Extensions) and 3DES (Triple Data Encryption Standard) are not encryption methods used by WPA2. S/MIME is a protocol used for secure email communication, while 3DES is a symmetric encryption algorithm that uses three rounds of encryption to increase security.
