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                  2.
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                  Default bridging of site links should be disabled under which of the following circumstances? 
                   Please select the best answer. 
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                  A.
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                  When the network is fully routed and you do not need to create site link bridges. 
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                  B.
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                  When the network has only one domain controller. 
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                  C.
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                  When the network is not fully routed and you do not need to create site link bridges. 
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                  D.
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                  When the network is not fully routed and you need to create site link bridges. 
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                E. | 
                
                  When you use SMTP as the intersite transport instead of IP. 
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                  F.
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                  Default bridging should never be disabled. 
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