Question: In SMS applications using 16-bit port addressing, what is the significance of assigning a port number within the range of 49153 to 65535?
Option 1: These are reserved for UDP/TCP ports assigned by IANA without needing to refer to the specification
Option 2: This range is available for allocation by SMS applications without the need to refer to any governing body
Option 3: Port numbers in this range trigger the establishment of a PDN connection of an IP PDN type using a specified APN
Option 4: These are reserved for future allocation, requiring applications to make a formal request for usage
Explanation: According to specifications, port numbers in the range of 49153 to 65535 are set aside for future allocations. Any application seeking to use a port number within this range must submit a formal request, highlighting the need for centralized management and approval to avoid conflicts.