Which of the following systems allow short text messages to be exchanged ?
A. SMS
B. IMS
C. JVS
D. All of the mentioned
Answer:A
Which of the following systems allow short text messages to be exchanged ?
A. SMS B. IMS C. JVS D. All of the mentioned
Explanation:Twitter is described as the prototypical example of this type of service. 2. Point out the correct statement: