Ik heb online gesolliciteerd. De procedure duurde 2 dagen. Ik heb gesolliciteerd bij Data Cluster Systems (Bengaluru) in mrt 2015
Sollicitatiegesprek
I applied online. The process took 2 weeks. I interviewed at DCS (Bangalore, Karnataka) in March 2015.
Interview was Most Difficult Interview & trickier, real time problem solving question, overall wonderful experience
What is Long polling, how does it work, and why would you use it? Considering server and client resources, what is the main drawback of using long polling? Which HTML5 feature is the best alternative to long polling?
Consider the following JavaScript code that is executed in a browser:
function startAjaxQueue(){
for (var i = 0; i < 50; i++){
executeAjaxCallAsync();
}
};
Assuming that executeAjaxCallAsync() uses a standard XmlHttpRequest asynchronously to retrieve data from server, how many concurrent HTTP requests would you expect to be created by this loop?
