Cisco® 350-701 Exam Practice Questions (P. 3)
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Question #21
How does DNS Tunneling exfiltrate data?
- AAn attacker registers a domain that a client connects to based on DNS records and sends malware through that connection.
- BAn attacker opens a reverse DNS shell to get into the client's system and install malware on it.
- CAn attacker sends an email to the target with hidden DNS resolvers in it to redirect them to a malicious domain.
- DAn attacker uses a non-standard DNS port to gain access to the organization's DNS servers in order to poison the resolutions.
Correct Answer:
A
A
GPT-4o - Answer
The process of DNS tunneling for data exfiltration involves utilizing DNS queries and responses to covertly transfer data. Attackers establish a server and register a domain. Once malware is installed on a victim's computer, it uses DNS queries to communicate with the attacker-controlled server. These DNS requests, normally allowed through firewalls, carry encoded data to the domain where the server decodes it. This method effectively bypasses standard network defenses, making detection challenging. Essentially, it turns DNS into a channel for data leakage without establishing direct connections that can be easily traced.
Question #29
DRAG DROP -
Drag and drop the capabilities from the left onto the correct technologies on the right.
Select and Place:
Drag and drop the capabilities from the left onto the correct technologies on the right.
Select and Place:
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