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Next: Measurement setup Up: A Precise and Efficient Previous: Introduction

Experimental methodology

In this section we describe our novel technique for determining a Web client's local DNS server. This is a necessary first step in measuring the closeness of clients to their local DNS servers. We also evaluate the impact of our technique on end user performance. Later, in Section 5, we will explain how our technique is a significant improvement over related previous work in terms of efficiency, nonintrusiveness, and accuracy.