Question: In an Isolated Operation for Public Safety (IOPS) mode, what is the primary role of an MC service client functional entity (e.g., MCPTT client, MCData client) in relation to MC service and IOPS application transactions?
Option 1: It acts solely as a network relay for external MC service requests.
Option 2: It serves as the user agent for both corresponding MC service transactions and all IOPS related application transactions.
Option 3: It functions exclusively as an IOPS mode configuration manager, without direct involvement in transaction handling.
Option 4: It operates only as a monitoring tool for QoS of ongoing MC service transactions in IOPS mode.
Explanation: In the context of IOPS mode for public safety, efficient and reliable transaction management is crucial. The correct answer reflects the entity's dual role: acting on behalf of the user for both the specific Mission Critical (MC) services and all application transactions pertinent to Isolated Operation, ensuring seamless and integrated functionality in isolated public safety scenarios.