How doTCP SYN attacks take advantage ofTCPto prevent new connections from being established to a host under attack？（） These attacks send multiple FIN segments forcing TCP connection release.。 These attacks fill up a hosts’ listen queue by failing to ACK partially openedTCPconnections.。 These attacks take advantage of the hosts transmit backoff algorithm by sending jam signals to the host.。 These attacks increment the ISN of each segment by a random number causing constant TCP retransmissions.。 These attacks send TCP RST segments in response toconnection SYN+ACK segments forcing SYN retransmissions.。
我们若照他的（）求什么，他就听我们，这是我们向他所存坦然无惧的心。 旨意。 心意。
Choose two commands that are required to enable multicast on a router， when it is known that thereceivers use a specific functionality of IGMPv3.（） ip pim rp-address。 ip pim ssm。 ip pim sparse-mode。 ip pim passive。
发生铁路旅客人身伤害事故时，收集不少于（）同行人或见证人的证言和有关证据。 1份。 2份。 3份。
长跑对人的心肺功能要求比较高，长跑时脉搏可达。（） 120-150次/分。 130-160次/分。 140-180次/分。 130-200次/分。
You replaced your Layer 3 switch，which is the default gateway of the end users. Many users cannot access anything now，including email，Internet，and other applications，although other users do not have any issues. All of the applications are hosted in an outsourced data center. In order to fix the problem，which one of these actions should you take？（）
