Question: What is the primary function of a mobile IAB-node in a 5G network?
Option 1: To provide simultaneous support for both IAB and mobile IAB functionalities.
Option 2: To act as a parent node for other IAB-nodes or mobile IAB-nodes.
Option 3: To provide NR access links to UEs and an NR backhaul link to a parent node, while conducting physical mobility across the RAN area.
Option 4: To perform only the mobile IAB-DU migration procedure without any other functionalities.
Explanation: A mobile IAB-node is a RAN node that provides NR access links to UEs and an NR backhaul link to a parent node, while conducting physical mobility across the RAN area. This is its primary function, as stated in the text. The other options are incorrect because they do not accurately describe the primary function of a mobile IAB-node.