TTMER18: Conformance testing of ATM switches

Control questions

There are five questions to be answered. One wrong answer makes the mark given to the measurement with one grade worse. Two, or more wrong answers will result a supplementary measurement!
  1. What is conformance testing, when, where and with what kind of tools are theses examinations executed?
  2. What can specificate the standard fixing the conformance testing process (ISO 9646), and on the basis of what kind of model?
  3. Demonstrate the four class of the abstract service primitives (ASP) in the OSI model in case of peer-to-peer connections!
  4. Enumerate the main steps of a standard conformance test!
  5. What are PICS and PIXIT documents, and what do they contain?
  6. Where is the PICS document used during the conformance test?
  7. What does ATS mean? What issues can distinguish the ETS from it? Demonstrate the main steps of the ATS->ETS conversion!
  8. What can identify the following acronyms in a test: SUT, IUT, UT, LT, PCO?
  9. How can a static conformance test be executed? With what kind of tool can we do it?
  10. What kind of results can be achieved in case of running of a conformance case?
  11. Demonstrate the structures of standard testing reports!
  12. What does TTCN mean? Demonstrate the main characteristics of TTCN!
  13. Which is the subgroup of the other one: testing group, testing step, testing case, testing set?
  14. Demonstrate the main parts of a testing set written in TTCN (table classes)?
  15. What kind of columns does have a table describing a test case written in TTCN?
  16. What kind of sequence is expressed by the part below, describing a TTCN dynamic behaviour? Case_A
         Case_B
              Case_C
         D_esemény
              Case_E

  17. Draw the simplified ATM reference model (without plains)!
  18. What do VPI and VCI fields mean in the header of an ATM cell?
  19. What does transfer mode mean in telecommunication, and what other transfer modes do you know?
  20. Demonstrate the main functions of an ATM switch!
  21. Demonstrate the main characteristics and built-up of interface testers!
  22. Draw the general block diagram of a protocol analyzer!
  23. What kind of physical interfaces can be used to the transmission of ATM cells?
  24. Demonstrate the electrical characteristics of an ATM interface of 25,6 Mbit/s!
  25. What kind of services can the ATM interface of 25,6 Mbit/s provide to the higher layers?
  26. Demonstrate the build-up of the STM-1 framework!
  27. Can we multiplex, or map ATM cells to the STM-1 framework? How can we do it?
  28. When does an ATM interface send AIS or RDI observation signals?