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350-701 · Question #480
350-701 Question #480: Real Exam Question with Answer & Explanation
The correct answer is D: outbound. During DNS tunneling for data exfiltration, attackers encode data in DNS requests that are sent in an outbound direction from the compromised network.
Submitted by zhang_li· Mar 30, 2026Network Security
Question
Which direction do attackers encode data in DNS requests during exfiltration using DNS tunneling?
Options
- Ainbound
- Bnorth-south
- Ceast-west
- Doutbound
Explanation
During DNS tunneling for data exfiltration, attackers encode data in DNS requests that are sent in an outbound direction from the compromised network.
Common mistakes.
- A. Inbound refers to data coming into the network, whereas exfiltration is about data leaving the network.
- B. North-south traffic typically refers to client-server communication between the internal network and the internet, which while DNS requests are, the term 'outbound' more precisely describes the exfiltration direction relative to the internal network perimeter.
- C. East-west traffic refers to communication between devices within the same network or data center, which is not the direction for data exfiltration to an external attacker.
Concept tested. DNS tunneling (data exfiltration direction)
Reference. https://www.cisco.com/c/en/us/products/security/dns-security/what-is-dns-tunneling.html
Topics
#DNS tunneling#data exfiltration
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