When a router has to make a rate transition from LAN to WAN， what type of congestion needs should be considered in the network design？（） [" RX-queue deferred"," TX-queue deferred"," RX-queue saturation"," TX-queue saturation"," RX-queue starvation"," TX-queue starvatio"]
DNA复制时需要哪些条件？
What is the recommended practice when considering VPN termination and firewall placement？（） [" have the firewall and VPN appliance deployed in parallel"," place the VPN in line with the firewall， with the VPN terminating inside the firewall"," place the public side of the VPN termination device in the DMZ behind a firewall"," place the VPN in line with the firewall， with the VPN terminating outside the firewall"]
阅读下列原文和译文，译文如有错误改正并说明属于哪方面错误？ 原文：夫物不产于秦，可宝者多；士不产于秦，而愿忠者觽。今逐客以资敌国，损民以益雠，内自虚而外树怨于诸侯，求国无危，不可得也。
小丁夫妇结婚15年，不能生育，欲收养一名子女。根据《收养法》，小丁夫妻可以收养的是（）。 ["小明，3岁，被遗弃，查找不到父母","小军，15岁，父母双方均去世","小西，11岁，父母离异，父亲不愿独自抚养","小兰，6岁，父亲去世，母亲改嫁"]
什么是基因突变？
