A biometric lock requires an authorized user to provide a unique biometric identifier, such as a fingerprint, in order to gain access to the server room. A badge reader requires an authorized user to swipe an access card in order to gain access. Both of these methods ensure that only authorized personnel are able to access the server room. Additionally, video surveillance and access control vestibules can be used to further secure the server room. Finally, a locking rack can be used to physically secure the servers, so that they cannot be accessed without the appropriate key.

A keylogger is a type of malware that captures user input, such as keystrokes, mouse clicks, and clipboard data, and sends it to a malicious actor. Keyloggers can be used to steal passwords, credit card numbers, personal information, and other sensitive data.
Reference: CompTIA A+ Core 2 Exam Objectives, Section 5.1

The error message indicates that the website's security certificate is not trusted by the user's device, which may prevent the user from accessing the secure internal network. To resolve this issue, the user can view the certificate details and install it on the device, which will add it to the trusted root certificate store. Reimaging the system and installing SSL, installing Trusted Root Certificate, or continuing to access the website are not recommended solutions, as they may compromise the security of the device or the network.

This would ensure that the support documentation reflects the current state of the network and prevents any confusion or mismatch during a network outage. Updating the network diagrams is also one of the best practices for network documentation, as stated in the Official CompTIA A+ Core 2 Study Guide1. The other options are not as effective or feasible as option B. Performing annual network topology reviews is too infrequent and may not capture recent changes. Allowing network changes once per year is too restrictive and may not meet the business needs. Routinely backing up switch configuration files is important, but it does not help with identifying new switches or devices on the network.

Operating system updates are used to secure a device from known exploits. Operating system updates are patches or fixes that are released by the vendor to address security vulnerabilities, bugs, or performance issues. Operating system updates can also provide new features or enhancements to the device. It is important to keep the operating system updated to prevent attackers from exploiting known flaws or weaknesses.