Refer to the exhibit. A network engineer received a sudden request to prioritize voice over his Cisco network and he has decided to leverage the AutoQoS feature. Based on the output shown, which two tasks need to be performed prior to issuing the autoqos voip command in this router? （） Enable Cisco Express Forwarding.。 Enable fast switching.。 Delete all policy maps.。 Remove service-policy commands from interface serial1/0.。 Delete all the currently configured class maps.。
大气污染生物监测评价
中国古代的《（）》和古罗马老普林尼（PlinitheElder）的《（）》，都可视作设计学作为一门理论的最初萌芽和起点。 《考工记》；《美的分析》。 《考工记》；《园冶》。 《天工开物》；《营造法式》。 《考工记》；《博物志》。
怎样保护密码？
演绎推理
What is the data encapsulation method for the VPLS virtual circuit （VC）？（）
