• The TEST PERIOD list box helps the user to decide how often this test needs to be executed.

• In the HOST text box, the host name of the server for which the test is to be configured has to be specified.

• The port number to which the selected DNS server is listening to has to be specified in the PORT textbox.

• The IP address or host name to be resolved during the test has to be specified in the TARGETS text box. Note that multiple targets (separated by commas) can be provided. 

• A DNS server supports two types of queries. For a non-recursive query, the DNS server attempts to respond to the request based on its local cache only. For a recursive query, a DNS server may use other DNS servers to respond to a request. The RECURSIVE flag can be used to determine the type of queries to be issued to a DNS server.   

• If multiple components of the same component type are awaiting configuration, then an APPLY TO OTHER COMPONENTS check box will appear in this page. Clicking on this check box will allow you to apply the configuration to all/selected components of that type.

• Once the necessary values have been provided, clicking on the UPDATE button will register the changes made.

When changing the configuration for specific servers, a “*” beside the text box corresponding to the parameter signifies that these values have to be manually configured by the user. The parameter values that require to be configured will typically be prefixed with a “$” or contain a series of “*”. A value of "none" in the parameter value indicates that the corresponding parameter value can be changed if required.