Question: What is the name of the narrowband physical channel used for random access in E-UTRA?
Option 1: Narrowband Physical Uplink Control Channel
Option 2: Narrowband Physical Random-Access Channel (NPRACH)
Option 3: Narrowband Physical Downlink Shared Channel
Option 4: Narrowband Physical Uplink Shared Channel (NPUSCH)
Explanation: In E-UTRA, the NPRACH is used for random access, allowing User Equipment (UE) to initiate communication with the base station. This channel is essential for scenarios where the UE needs to establish a connection or send data without prior scheduling.