200-201 · Question #133
Which type of attack occurs when an attacker is successful in eavesdropping on a conversation between two IP phones?
The correct answer is D. man-in-the-middle. Man-in-the-Middle (MitM) is correct because this attack involves an attacker secretly positioning themselves between two communicating parties - in this case, two IP phones - intercepting and potentially altering their conversation without either party knowing. A…
Question
Which type of attack occurs when an attacker is successful in eavesdropping on a conversation between two IP phones?
Options
- Aknown-plaintext
- Breplay
- Cdictionary
- Dman-in-the-middle
How the community answered
(14 responses)- B7% (1)
- C7% (1)
- D86% (12)
Explanation
Man-in-the-Middle (MitM) is correct because this attack involves an attacker secretly positioning themselves between two communicating parties - in this case, two IP phones - intercepting and potentially altering their conversation without either party knowing. A known-plaintext attack (A) is a cryptographic attack where the attacker has access to both the encrypted and unencrypted versions of data, which doesn't describe eavesdropping on a live call. A replay attack (B) involves capturing and re-transmitting data packets to impersonate a user or repeat a transaction - not passive listening. A dictionary attack (C) is a password-cracking technique that cycles through common words, completely unrelated to VoIP eavesdropping.
Memory tip: Think of "man-in-the-middle" literally - picture a spy standing between two people having a phone conversation, secretly listening in. Whenever you see "eavesdropping," "intercepting," or "listening between two parties," MitM is almost always the answer.
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