C# Interview Questions-What is a pre-requisite for connection pooling?

Ans: Multiple processes must agree that they will share the same connection, where every parameter is the same, including the security settings.
Asynchronous call to function.
// Global Request Object
var reqAsync;

// This will access the given URL in async mode
// will execute passed function, when processing is complete
function AsyncRequest(url, fn)
{
    // branch for native XMLHttpRequest object
    if (window.XMLHttpRequest) {
        reqAsync = new XMLHttpRequest();
        reqAsync.onreadystatechange = fn;
        reqAsync.open("GET", url, true); // true indicates Async request
        reqAsync.send(null);
    // branch for IE/Windows ActiveX version
    } else if (window.ActiveXObject) {
        reqAsync = new ActiveXObject("Microsoft.XMLHTTP");
        if (reqAsync) {
            reqAsync.onreadystatechange = fn;
            reqAsync.open("GET", url, true); // true indicates Async request
            reqAsync.send();
        }
    }
}       

// This will access the given URL in sync mode
function SyncRequest(url)
{
    var req ;
    // branch for native XMLHttpRequest object
    if (window.XMLHttpRequest) {
        req = new XMLHttpRequest();
        req.open("GET", url, false); // false indicates sync request
        req.send(null);
    // branch for IE/Windows ActiveX version
    } else if (window.ActiveXObject) {
        req = new ActiveXObject("Microsoft.XMLHTTP");
        if (req) {
            req.open("GET", url, false); // false indicates sync request
            req.send();
        }
    }
    return req.responseText;
}       

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