Question: In an E-UTRAN network, which of the following is a characteristic of the RRC_IDLE state, but NOT of the RRC_CONNECTED state?
Option 1: The UE has context stored in the eNB.
Option 2: The network can transmit and/or receive data to/from the UE without prior connection establishment.
Option 3: The UE monitors a control signalling channel for shared data channel allocations.
Option 4: Cell re-selection mobility is supported.
Explanation: In RRC_IDLE, the network can page the UE to establish a connection for data transmission, but it cannot transmit/receive data directly without first transitioning to RRC_CONNECTED. This distinguishes RRC_IDLE from RRC_CONNECTED, where direct data transmission between the network and UE is possible.