Explanation:Not all push technologies used in mobile applications are server-based. 3. Which of the following IMAP command is used to update and amounts to a heartbeat signal and response ?
A. EXIT
B. IDLE
C. CLOSE
D. All of the mentioned
Answer:A
Explanation:Not all push technologies used in mobile applications are server-based. 3. Which of the following IMAP command is used to update and amounts to a heartbeat signal and response ?
A. EXIT B. IDLE C. CLOSE D. All of the mentioned
Explanation:Some polling mechanisms set the polling interval so short that the system appears to behave as if it is a push technology. 4. Which of the following services uses push email ?