SCEA, SCBCD, SCJP1.4, OOAD-UML, OCP 9i
Q : Which 2 of the following choices correctly describe the behaviour of the Publish/Subscribe and PTP messaging
Allowable choices
1. Pub/Sub is a message queue system
2. Pub/Sub is 1 sender, 1 receiver
3. PTP - N Senders and 1 receiver
4. Pub/Sub - 1 Sender and n Receiver
5. PTP is a message queue system
6. PTP - 1 sender and 1 receiver
Sean Walker<br />PMP, SCEA, SCWCD, SCJP
Q : Which 2 of the following choices correctly describe the behaviour of the Publish/Subscribe and PTP messaging
Allowable choices
1. Pub/Sub is a message queue system
2. Pub/Sub is 1 sender, 1 receiver
3. PTP - N Senders and 1 receiver
4. Pub/Sub - 1 Sender and n Receiver
5. PTP is a message queue system
6. PTP - 1 sender and 1 receiver
A+, Network+, SCJP, SCWCD<br />preparing for SCBCD, SCEA, CompTIA I-Net+
Sean Walker<br />PMP, SCEA, SCWCD, SCJP
I think the point to take note of is that the question relates to the 'messaging' models of PTP and Pub/Sub not the messaging resource (I have forgotten the generic JMS term used for both queues and topics).
Put another way, when the question asks about the cardinality of producers and consumers, I believe the context is at the message level. So, while both topics and queues support multiple producers, PTP and Pub/Sub messages do not. And while both PTPO and Pub/Sub allow for multiple consumers per messaging resource, only Pub/Sub allows for a given message to be consumed by more than one receiver.
A+, Network+, SCJP, SCWCD<br />preparing for SCBCD, SCEA, CompTIA I-Net+
SCEA, SCBCD, SCJP1.4, OOAD-UML, OCP 9i