In the above example, there is not much consideration for performance. In fact, there are some relatively large optimization points here.
Different from other malicious data tampering or hijacking attacks, DDoS is simple and crude, and can directly destroy the target. In addition, compared with other attack methods DDoS, the technical requirements and the cost of launching the attack are very low, only some server permissions need to be purchased or a batch of broilers need to be controlled, and the corresponding attack speed is very fast and the attack effect is visible. On the other hand, DDoS is easy to attack and difficult to defend. In order to ensure the needs of normal customers, service providers need to spend a lot of resources to fight against the attack initiator. These characteristics make DDoS a very good sword in the hands of hackers and a thunderbolt.
1 马赛克
《团圆》主要讲述了一个幸福的家庭由于一场突如其来的变故，导致五个兄弟姐妹失散流离，天各一方，历尽人事沧桑，最终再次团圆在一起的故事。
One of google earth 's new features, the flight simulator,
一天晚上，马特试图制止一场打斗，却因此变成了杀人犯。如今，有犯罪前科的他重建了自己的生活，但是一个来电打破了这一切。
TCB (TCP? Transport Control Block is a transport protocol data structure that contains all the information of the connection (in fact, in many operating systems, it is a queue used to process inbound connection requests. The queue holds TCP connection items that are in a half-open state and items that have established a full connection but have not yet been extracted by the application through an accept () call). The amount of memory occupied by a single TCB depends on the implementation of TCP options and other functions used in the connection. Usually a TCB has at least 280 bytes, which in some operating systems has exceeded 1300 bytes. The SYN-RECEIVED state of TCP is used to indicate that the connection is only half open, and the legality of the request is still questioned. An important aspect worth noting here is that the size of TCB allocation space depends on the SYN packets received-before the connection is fully established or the return reachability of the connection initiator is verified.
Invoker.action ();
果然，她接连清除许多细小的木刺，把那伤口重新清理了一遍。
原来在永乐初年，沐天亮的先人云南侯沐昕与逃亡公主朱雪儿密谋为废帝朱允炆复辟，沐昕与无党派掌门李素希商策，决定进京刺杀朱棣，朱雪儿也混进宫中，湘王朱柏高密，朱棣亲率大军围困武当山。三十万大军搜山无果，朱棣恼怒之下欲放火烧山。朱允炆见大势已去，遂立誓在武当终身修道，从此不屡凡世。朱棣下旨还他一个云中的故宫，就此开启北建故宫南修武当的浩大工程。
Second handshake: when the server receives syn packet, it must confirm the SYN (ack=j+1) of the customer, and at the same time it also sends a SYN packet (syn=k), that is, SYN + ACK packet. At this time, the server enters the SYN_RECV state;
秦淼慌忙将匕首和竹枝递给他，却没有发笑。
而且这家伙小心谨慎，如我心中所想，也不明说，在这件事上他可是摸透我的心思。
尹旭很清楚这个时代，领地的重要xìng。
占南弦敏锐洞察到高科技国产高精尖的发展趋势，与同学合伙集资创建了浅宇，在高科技行业创业只有10%成功率的情况下，浅宇经过了各种风浪，最终成功上市。温暖，毅然决然辞掉英国某知名创投公司的工作回国，来到浅宇并靠自己的实力当上了总裁特助。
卫斯理为唤醒昏迷的爱人白素,求助于拥有着超凡能力的蓝血星人方天涯。方天涯在三百年前的一次意外中坠落地球,当时和她一起的还有他的爱人洛卡,两人失散。三百年间，方天涯一刻也没有放弃过寻找爱人。作为回报，卫斯理答应帮助她寻找洛卡。
If black or white is directly used for mixing, it can produce obvious darkening or brightening effect, but it will not produce pure black or white in the coverage area.
葫芦眯眼打量旗下的中年人，尚算镇定，颌下三缕胡须迎风飘动，一派儒雅，却又不失威严。
