OpenText Senior Software Applications Engineer interview questions

Round 1: 1) What is the diffrence between queue and topic 2) What is the routing algarithom 3) What is HTTP and REST 4) Do you know about AJAX and SQL 5) Do you know about JBOSS and Tomcat web server 6) have you worked on xml parsers 7) Normal forms in SQL Round 2: 1) What is blocked queue 2) How you have improved performance of your application 3) What is difference between SOAP/REST 4) How to expose input and output in REST using WADL 5) Threads producer consumer problem 6) When to use notify and notifyall 7) java executor frame work and concurrent collections 8) what desing patterns you have used 9) what is strategy pateran 9) What is the thread dump and heap dump 10) How to scale the system to improve perfomence 11) What is vertical scaling and horizontal scaling 12) how will you isolate the performece problems