Question: What is the format and size of the TP-Validity Period field in SMS, representing the absolute time of validity period termination?
Option 1: 7 octets in semi-octet representation
Option 2: 4 octets in full byte representation
Option 3: 3 octets in hexadecimal format
Option 4: 8 octets in decimal format
Explanation: The TP-Validity Period consists of 7 octets and utilizes a semi-octet representation, allowing for efficient encoding of the absolute time when the validity period terminates, mirroring the format used for consistency and ease of processing within SMS infrastructure.