Question: In a TDD (Time Division Duplex) scenario for radio resource management, what is the maximum allowed time for a User Equipment (UE) to complete cell re-selection, from the start of the T2 period to sending preambles on the Physical Random Access Channel (PRACH) for a CONNECTION REQUEST?
Option 1: 5 seconds
Option 2: Less than 8 seconds
Option 3: Exactly 7.68 seconds
Option 4: More than 10 seconds
Explanation: The correct answer is "Less than 8 seconds" because, according to the specifications for radio resource management in TDD mode, the cell re-selection delay (the time from the beginning of the T2 period to when the UE camps on a new cell and initiates a connection request) must be under 8 seconds. This ensures efficient network handovers without undue delays. Options 1, 3, and 4 do not accurately reflect this maximum allowed delay as specified for TDD operations.