Refer to the exhibit. What is the effect when the switchport priority extend cos 3 command is configured on the switch port interface connected to the IP phone？（） The IP phone is enabled to override with aCoS value of 3 the existing CoS marking of the PC attached to the IP phone.。 The switch will no longer tag incoming voice packets and will extend the trust boundary to the distribution layer switch.。 RTP will be used to negotiate aCoS value based upon bandwidth utilization on the link. 。 Effectively， the trust boundary has been moved to the PC attached to the IP phone.。 The computer is now establishing theCoS value and has effectively become the trust boundary.。
哺乳动物短期致癌实验有哪些？
产褥期保健操，下列正确的是（） 产后第三天开始。 每1~2天增加1节。 每节做8~16次。 避免进食前后1h。 运动前排空大、小便。
Which two of the following are valid characteristics of EIGRP?（） Has a maximum hop count of 25。 Can differentiate between internal and external routes。 Uses a 32-bit metric。 Can maintain only one routing table。 Need all networks to use the same subnet mask。 Supports only one routed protocol。
经营性亏损是指经营国家指定经营的商品，其销价不足以抵补进价，费用及税金支出而发生的亏损。
人员密集场所、观众厅的入场门、太平门不应设置门槛，其宽度不应小于（）米。
