Explanation
According to the CompTIA troubleshooting methodology, the fourth step is to establish a plan of action to resolve the problem and implement the solution1. The best practice is to test each solution individually to determine the root cause, rolling back the changes in between each test. This way, the technician can isolate the cause and avoid introducing new problems or making the situation worse. Testing each solution in succession and restoring the server from the latest snapshot (D) is not a good option because it may not identify the root cause and may overwrite important data. Implementing the shortest solution first to identify the issue and minimize downtime is also not a good option because it may not solve the problem or may create new issues. Consulting internet forums to determine which is the most common cause and deploy only that solution (A) is not a good option because it may not apply to the specific situation or may be outdated or inaccurate

A sniffer (also known as a packet analyzer) is a tool that captures and inspects data packets traveling across the network. In this case, using a sniffer would help identify suspicious or malicious redirection of traffic, possibly caused by a man-in-the-middle attack, DNS hijacking, or malware.
* Sniffer (Answer D): This tool will allow the senior administrator to inspect the network traffic and identify if and how requests to the anti-malware website are being intercepted or redirected.
* Data loss prevention (Option A): DLP tools focus on preventing data leakage rather than analyzing traffic redirection.
* File integrity monitor (Option B): This checks for unauthorized changes to files, which may not directly address network traffic redirection.
* Port scanner (Option C): A port scanner would only identify open ports on devices, which is unrelated to the redirection issue.
CompTIA Server+ Reference:This topic is addressed under SK0-005 Objective 4.2: Explain server roles and their purposes.

NIC teaming is a feature that allows the use of multiple network interface cards (NICs) as a single logical interface with a single IP address. It can improve the network performance, bandwidth, and redundancy of a server. Verified References: [NIC teaming], [Network interface card]