Windows 8 check for Internet connection

public static bool IsInternetSlow()
{
    return NetworkInterface.GetIsNetworkAvailable();
}

public static bool IsInternet()
{
    ConnectionProfile connections = NetworkInformation.GetInternetConnectionProfile();
    bool internet = connections != null && connections.GetNetworkConnectivityLevel() == NetworkConnectivityLevel.InternetAccess;
    return internet;
}

protected override void Test()
{
    Stopwatch w = new Stopwatch();
    w.Start();
    for (int i = 0; i < 100; i++)
    {
        bool isInternet = IsInternetSlow();
    }

    w.Stop();
    Debug.WriteLine("Slow method: {0}", w.Elapsed);

    w.Reset();
    w.Start();
    for (int i = 0; i < 100; i++)
    {
        bool isInternet = IsInternet();
    }

    w.Stop();
    Debug.WriteLine("Fast method: {0}", w.Elapsed);
}

/////////////////////////////
Slow method: 00:00:17.1382156
Fast method: 00:00:01.5759819