Question: How are bit strings, such as those representing MAC PDUs, generally read and interpreted in terms of their bit order within the 3GPP NR (New Radio) Medium Access Control (MAC) protocol?
Option 1: From right to left and then in reverse reading order of the lines.
Option 2: From left to right and then in the normal reading order of the lines.
Option 3: Starting from the middle, alternating between left and right, and then following the line order.
Option 4: The bit order is randomly assigned and can vary per MAC PDU.
Explanation: According to the MAC protocol specification for 3GPP NR, when representing bit strings (like those for MAC PDUs) in tables, the interpretation follows a specific order: starting from the most significant bit on the left of the first line, moving right, and then proceeding down the lines. This ensures consistency in how bit strings are read and understood within the protocol, facilitating accurate communication between network elements.