A session perhaps designated as recoverable in which case all messages travelling on the session are sequence numbered and logged. If the transmission not succeeds (positive acknowledge not received by sender) then the session endpoints resynchronize back to that message sequence number and the lost and subsequent messages are re-presented by the sender endpoint. If one of the endpoints not succeeds when it is restarted the session will be re-established and the communication resumed. This needs that the endpoints be ‘recoverable’ although one endpoint of a session may assume recovery responsibility for the other.
If a message ends up in a recoverable queue afterwards:
a) If the dequeuer of the message (session or else process) aborts the message will be replaced in the queue.
b) If the system collide the queue will be reconstructed (using the log or else some other recovery mechanism).
If the session or queue isn’t recoverable then the message may be lost if the transmission dequeuer or the system fails.
It is the responsibility of the data communications component to guarantees that a recoverable message is ‘successfully’ processed or presented exactly once. It does this with requiring that receipt of recoverable messages acknowledged. A transaction ‘acknowledges’ receipt of a message subsequent to it has processed it at commit time.
Latest technology based Operating System Online Tutoring Assistance
Tutors, at the www.tutorsglobe.com, take pledge to provide full satisfaction and assurance in Operating System help via online tutoring. Students are getting 100% satisfaction by online tutors across the globe. Here you can get homework help for Operating System, project ideas and tutorials. We provide email based Operating System help. You can join us to ask queries 24x7 with live, experienced and qualified online tutors specialized in Operating System. Through Online Tutoring, you would be able to complete your homework or assignments at your home. Tutors at the TutorsGlobe are committed to provide the best quality online tutoring assistance for Operating System Homework help and assignment help services. They use their experience, as they have solved thousands of the Operating System assignments, which may help you to solve your complex issues of Operating System. TutorsGlobe assure for the best quality compliance to your homework. Compromise with quality is not in our dictionary. If we feel that we are not able to provide the homework help as per the deadline or given instruction by the student, we refund the money of the student without any delay.
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!