The dash test emulates the DASH (Dynamic Adaptive Streaming over HTTP) protocol, which is defined in the DASH ISO/IEC 23009-1 standard. As for the raw test, this test selects a random Measurement Lab server each time (so the download speed is expected to oscillate with the round-trip latency). The protocol emulated by this test downloads multiple HTTP resources from the same server, thus multiple download speed measurements are produced for each single test.
We plan to use this test's results to study the network behaviour in case of multimedia streaming and to better understand rate adaptation algorithms that aim at always reproducing media at the maximum achievable quality supported by the network.