TU Wien:Advanced Internet Computing VU (Dustdar)/Prüfung 2015-04-22

In parentheses are the points of the respective question

1. (5) Name and briefly describe the benefits of using Web services. At least 3 technical and 2 business benefits.
2. (3) Briefly describe functional and non-functional properties.
3. (5) What is BPEL. What is used for. How does BPEL achieve recursive composition with WSDL.
4. (5) What is ESB. What is the main purpose of ESB. ESB and SOA.
5. (5) The empty fields of Web Services framework are given. Fill them up properly. (page 70 in the first presentation).
6. (5) Five true/false questions.
   1. BPEL is mainly intended for choreography
   2. Web services almost always represent result in JSON
   3. QoS monitoring is possible only at the server side
   4. can’t remember more
7. (5) Calculate two extreme cases of Amdahl’s Law (P=1 & P=0), and briefly describe for each case does it make sense to use multiple processors.
8. (5) Briefly discuss how does Cloud Computing prevent overprovisioning.
9. (5) Why do providers offer Virtual Machines over Physical Machines? What are the benefits of Virtual Machines?
10. (7) A really big insurance company with varying database demands needs to switch to cloud. What would you recommend, private or public Cloud. Explain why. What are benefits of using Private cloud over Public. (or other way around, can’t remember now)