Question: What does the "Mean number of RACH preambles received" measurement provide in a cell?
Option 1: The total number of RACH preambles received in a minute.
Option 2: The mean number of RACH preambles received in one second, separately for dedicated, group A and group B preambles.
Option 3: The peak number of RACH preambles received in an hour.
Option 4: The average number of RACH preambles received per user.
Explanation: This measurement provides the mean number of RACH preambles received in a cell in one second, which is crucial for understanding the load and performance of the cell. It separately counts dedicated preambles, randomly chosen preambles in group A (low range), and randomly chosen preambles in group B (high range). This information helps network operators to optimize their network configuration and resource allocation.