Question: For non-3GPP devices connecting via an MC (Mission Critical) gateway UE, what is a key requirement for the connection process, particularly distinguishing between devices that can or cannot host MC service clients?
Option 1: Quality of Service (QoS) Provisioning
Option 2: Authorisation Verification by the MC System
Option 3: Dynamic Allocation of IP Addresses
Option 4: Mandatory Encryption Protocol Upgrade
Explanation: The correct answer, 'Authorisation Verification by the MC System', is crucial because it ensures that all non-3GPP devices, regardless of their capability to host MC service clients, undergo a necessary security and permission check before being allowed to connect through an MC gateway UE. This verification step is vital for maintaining the integrity and security of mission-critical communications, which often involve sensitive or emergency services.