Which of the following protocols is commonly used to dynamically assign IP addresses to network devices?

You are a senior network administrator tasked with diagnosing intermittent connectivity issues on the executive floor of a multinational corporation, which primarily uses iOS devices. After initial checks, you suspect that the problem may be related to SSID settings and network configuration specifics not aligning correctly with the corporate security protocols. Given the high-security requirements and the exclusive use of iOS devices on this floor, which approach should you take to verify and rectify the network settings directly on the affected devices?

A financial services firm, hosting sensitive client information and handling numerous transactions daily, needs to upgrade its cybersecurity measures to thwart sophisticated cyber threats. Considering the requirements for high security in financial transactions and client data protection, which integrated security measure should the firm implement to provide the most robust defense against unauthorized data access, identity theft, and potential data breaches?