After implementing the solution, the immediate next step is to verify full system functionality. This confirms that the problem has been resolved and helps ensure no new issues have been introduced.
From Andrew Ramdayal's guide:
"After the solution is implemented, test the system to ensure that it is fully operational, and the original problem has been resolved. Also, put in place any measures that could prevent the issue from recurring."

The most probable issue is with thetransceiver model. Not all transceivers are compatible with multimode fiber, and the specific type (e.g., SFP, SFP+) and its wavelength must match the fiber cable type. If a port works on one switch but not the other with the same cable, this is a strong indicator of incompatible or faulty transceiver hardware.
Reference:

Reference: CompTIA Network+ Certification Exam Objectives - Wireless Networks section.

Switch ports secured with features like port security often allow only specific MAC addresses.
Installing a new NIC changes the MAC address, which can prevent the host from connecting if the switch does not recognize the new address.

WPA3-Enterprise provides strong security and supports authentication using domain identities through a RADIUS server and 802.1X authentication. This is the best choice for a corporate environment requiring user- based authentication.
WPA3-Enterprise Benefits:
Uses 802.1X with EAP (Extensible Authentication Protocol) to authenticate users via a directory service (e.g., Active Directory).
Eliminates shared passwords (PSK) for authentication.
Provides strong encryption and resistance to brute-force attacks.
Incorrect Options:
A: Enable MAC Security:
MAC filtering is not secure because MAC addresses can be spoofed.
B: Generate a PSK for Each User:
Pre-shared keys (PSK) are used in WPA-Personal, not in an enterprise setting.
Does not scale well in corporate environments.
C: Implement WPS:
Wi-Fi Protected Setup (WPS) is a vulnerable security method meant for home users.
Not suitable for enterprise authentication.