Question: Under what circumstances is the Criticality Diagnostics Information Element (IE) typically sent by the eNodeB (eNB) or the Mobility Management Entity (MME) in an Evolved Universal Terrestrial Radio Access Network (E-UTRAN)?
Option 1: When a UE (User Equipment) initiates a new session setup.
Option 2: During periodic network optimization scans.
Option 3: In response to successful handover procedures.
Option 4: When parts of a received message are not comprehended, missing, or contain logical errors.
Explanation: The Criticality Diagnostics IE is utilized for error handling and diagnostics. It provides feedback on issues with message integrity or comprehension, such as unrecognized, absent, or logically flawed Information Elements, enhancing network reliability and performance.