Redundancy ensures that traffic can be rerouted to backup routers during patching, allowing updates to be applied without disrupting critical network operations.

An air-gapped network is a network that is physically isolated from other networks, such as the internet, to prevent unauthorized access and data leakage. However, an air-gapped network can still be compromised by removable devices, such as USB drives, CDs, DVDs, or external hard drives, that are used to transfer data between the air-gapped network and other networks.
Removable devices can carry malware, spyware, or other malicious code that can infect the air- gapped network or exfiltrate data from it. Therefore, removable devices are the most common data loss path for an air- gapped network.

Monitoring outbound traffic is essential for detecting unauthorized data exfiltration from a system.
A new vulnerability that allows malware to move data unauthorizedly would typically attempt to send this data out of the network. By monitoring outbound traffic, security tools can detect unusual data transfers, trigger alerts, and help prevent the exfiltration of sensitive information.

In this scenario, employees are attempting to navigate to spoofed websites, which is being blocked by the web filter. To address this issue, the administrator should implement security awareness training. Training helps employees recognize phishing and other social engineering attacks, reducing the likelihood that they will attempt to access malicious websites in the future.
* Deploying multifactor authentication (MFA) would strengthen authentication but does not directly address user behavior related to phishing websites.
* Decreasing the level of the web filter would expose the organization to more threats.
* Updating the acceptable use policy may clarify guidelines but is not as effective as hands-on training for improving user behavior.