单项选择题 Refer to the exhibit. A trunk link is connected between switch A_SW and switch D_SW. Based on  the configuration shown in the exhibit，  how would the traffic coming from the switch A_SW be  managed？（）

单项选择题 The Company network is displayed in the following topology exhibit： Workstation 1 traffic is set for cos 5 and the switch CompanyA sends workstation 1 traffic to the  switch CompanyB. However， not all of the traffic from Switch CompanyA is from workstation 1.  Switch CompanyA configurations Switch CompanyB Configuration：   mlsqos mls qos   interfacefa0/1 interface fa0/1   switchportmode trunk switchport trunk mode   switchporttrunk encapsulation dot 1q switchport trunk encapsulation dot 1q   switchporttrunk native vlan 1 switchport trunk native vlan 1   Frames from Workstation 1 are given the rightful priority through Switch CompanyA， but Switch CompanyB doesn’t reciprocate， and treats Workstation 1 frames as if they have no precedence. Which of the following actions will prioritize traffic from Workstation 1？（）

多项选择题 VOIP is being implemented in the Company network and you need to assess the need for QoS.   Which of the following network problems would indicate a need to implement QoS features？（）