单项选择题Asanexperiencedtechnician,youareresponsibleforTechnicalSupport.WhichofthefollowingdescriptionsiscorrectaboutthecharacteristicofSLBonearmmode?()
A. This out-of-band approach supports scaling
B. SLB· is not inline.
C. Mode is not as common as bridge or routed mode.
D. Return traffic requires PB·R, server default gateway pointing to SLB·, or client source NAT·