Question: What is a key benefit of in-network content caching for mobile operators, as related to video-based services like live streaming and VR?
Option 1: Enhanced Security for User Data Transmission
Option 2: Increased Dependency on Third-Party Content Providers
Option 3: Reduced Backhaul Resource Usage and Efficient Utilization of Radio Resources
Option 4: Mandatory Service Agreements with All Content Providers
Explanation: In-network content caching benefits mobile operators by improving user experience (reducing latency) and managing network resources. It reduces backhaul resource load (between cell sites and the core network) and utilizes radio resources more efficiently, as less data is transmitted over the air interface, crucial for high-bandwidth, low-latency services like live streaming and VR.