Question: What is the maximum value of the SRB-Identity information element for Signalling Radio Bearers (SRBs) used by a UE, as per the base definition before Release 17?
Option 1: INTEGER (0..2)
Option 2: INTEGER (1..3)
Option 3: INTEGER (1..5)
Option 4: INTEGER values are defined but the maximum is extended beyond 3 in later releases
Explanation: According to specifications, the base definition for SRB-Identity before any release-specific extensions is INTEGER (1..3), indicating the maximum value under this basic definition is indeed 3. Later releases introduce additional values, but these are release-specific extensions beyond the base definition in question.