When using WPAD DNS method, winch FQDN format do browsers use to query the DNS server?

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  1. Web proxy auto-discovery protocol
    The Web Proxy Auto-Discovery Protocol (WPAD) is a method for a browser to automatically discover the proxy configuration file, without any browser configuration, using settings in DNS or DHCP. For more information about this method, refer to the following Internet Engineering Task Force (IETF) draft:

    http://tools.ietf.org/html/draft-ietf-wrec-wpad-01

    When using DNS, the most widely supported resolution method, an entry is made in the local authoritative zone to map the name wpad (such as wpad.example.com) to one or more IP addresses. The browser is configured to automatically look in the following locations to find the WPAD configuration, which is in effect a PAC file, as described in PAC policy:

    http://wpad.department.branch.example.com/wpad.dat

    http://wpad.branch.example.com/wpad.dat

    http://wpad.example.com/wpad.dat

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