To answer this question, you need to understand the limitations of a host-based firewall. Let's go through each option to understand why it is correct or incorrect:
Option A) It does not block incoming traffic - This option is incorrect because a host-based firewall can indeed block incoming traffic. It acts as a barrier between the host computer and the external network, filtering incoming packets based on predetermined rules.
Option B) It does not block outgoing traffic - This option is incorrect because a host-based firewall can also block outgoing traffic. It can be configured to monitor and control the outbound communication from the host computer.
Option C) It can be turned off - This option is correct because a host-based firewall can be disabled or turned off by the user or an attacker with sufficient privileges. If the firewall is disabled, it leaves the host computer vulnerable to potential threats and attacks.
Option D) It can’t be turned off - This option is incorrect because, as mentioned earlier, a host-based firewall can be turned off. It is a software-based firewall that runs on the host computer, and like any other software, it can be disabled or stopped.
The correct answer is C) It can be turned off. This option is correct because relying solely on a host-based firewall to mitigate a risk is not recommended since it can be bypassed or disabled, leaving the host computer vulnerable to potential threats. It is important to have additional layers of security, such as network-based firewalls, to provide a more comprehensive defense against risks.