Ethical Hacking Essentials Practice Test

What role does airodump-ng play in cracking WEP encryption?

1. Decrypts captured packets

2. Generates traffic on the target AP

3. Captures initialization vectors (IVs)

4. Associates the wireless card with an AP

The correct answer is: Captures initialization vectors (IVs)

Airodump-ng primarily focuses on packet capturing within wireless networks, specifically targeting WEP (Wired Equivalent Privacy) encrypted networks. When it comes to cracking WEP encryption, capturing initialization vectors (IVs) is crucial because WEP utilizes these vectors as part of its encryption mechanism. The IVs are relatively short and can be collected in significant quantities to gain enough data that can be analyzed to find the WEP key. By accumulating a large number of these IVs, an attacker can perform statistical analysis to exploit weaknesses in the WEP protocol. This method relies on the fact that WEP uses the same IVs repeatedly, which can lead to vulnerabilities and make it possible to recover the encryption key. Therefore, airodump-ng's role in this process is fundamental, as it serves as a tool to gather the necessary data to initiate the cracking process efficiently. The other points listed pertain to different functionalities or stages of the penetration test. For instance, while generating traffic on the target access point or associating with an AP can be part of the overall process, they are not the primary function of airodump-ng specifically in the context of capturing the required information for cracking WEP. Decrypting captured packets is a subsequent step that typically