Multiple choice general knowledge science & technology

For MT-SM, a report is always returned to the __________ and for MO-SM, a report is always returned to the ___________.

  1. SMSC , SMSC

  2. handset , SMSC

  3. SMSC , handset

  4. handset , handset
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

MT-SM (Mobile Terminated - Short Message) is sent TO a handset, so delivery confirmation goes back to the SMSC (which initiated it). MO-SM (Mobile Originated) is sent FROM a handset, so its status report goes back to the handset as confirmation. This is fundamental to SMS flow control.

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