CISA · Question #74
Which of the following threats is mitigated by a firewall?
The correct answer is B. Intrusion attack. A firewall primarily mitigates intrusion attacks by inspecting and filtering network traffic, blocking unauthorized access attempts based on predefined security rules.
Question
Which of the following threats is mitigated by a firewall?
Options
- AAsynchronous attack
- BIntrusion attack
- CTrojan horse
- DPassive assault
How the community answered
(55 responses)- A2% (1)
- B91% (50)
- C2% (1)
- D5% (3)
Why each option
A firewall primarily mitigates intrusion attacks by inspecting and filtering network traffic, blocking unauthorized access attempts based on predefined security rules.
Asynchronous attack is not a standard, recognized classification of a threat that firewalls are designed to specifically mitigate.
Firewalls function as a barrier between trusted and untrusted networks, preventing unauthorized access by analyzing incoming and outgoing network traffic and blocking connections that violate established security policies, which directly mitigates intrusion attempts.
A Trojan horse is a type of malware; while a firewall can help prevent its initial network delivery, it does not directly detect or remove Trojan horses once they have penetrated the network or executed on an endpoint.
A passive assault, such as eavesdropping, involves unauthorized monitoring of network traffic; while firewalls can prevent active unauthorized access, they do not inherently prevent passive listening unless combined with other security measures like encryption.
Concept tested: Firewall functions and network security
Source: https://docs.microsoft.com/en-us/windows/security/threat-protection/windows-defender-firewall/windows-defender-firewall-with-advanced-security
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