4. Feel Your Fillings. Polyurethane foam is a low-cost, easy-care cushion filling. But the more durable, high-density type can feel hard, and softer, low-density foam deteriorates more rapidly with constant use. High-resilient (HR) foam is slightly more expensive but more comfortable and long-lasting.
Ping is a program that sends a series of packets over a network or the Internet to a specific computer in order to generate a response from that computer. The other computer responds with an acknowledgment that it received the packets. Ping was created to verify whether a specific computer on a network or the Internet exists and is connected. Some have claimed that the word ping is actually an acronym for Packet Internet (or Inter-Network) Groper, deliberately contrived to play on the fact that pinging with a computer is similar to what submariners do with sonar.
While upload and download figures are important, the true test of the quality of your hookup is your 'ping' rate. Sometimes known as 'latency' or 'lag', ping is the nanosecond measurment it takes for a small piece of data to travel from your computer, reach its location and then travel back to you.f your favorite web site is loading slow, you can come here and do an internet speed test and know if it's your link or the server where the web site resides. If your test results are comparable to past results, then you know it's not your line having a problem.