Question: In a 5G system, what is a key consideration for selecting a content caching application to deliver cached content to a User Equipment (UE), based on operator policy?
Option 1: Minimize utilization of radio and backhaul resources, as well as application resource
Option 2: Prioritize content caching applications located in the core network over those in the access network
Option 3: Always select the content caching application closest to the UE, regardless of resource utilization
Option 4: Choose the content caching application with the highest storage capacity
Explanation: This is correct because the 5G system is required to support an efficient mechanism for selecting a content caching application based on operator policy, which includes minimizing the utilization of radio, backhaul resources, and/or application resource. This approach optimizes network efficiency while delivering cached content to the UE.