如果目的IP地址显示不是同一网段的,那么A要实现和B的通讯,在流缓存条目中没有对应MAC地址条目,就将第一个正常数据包发送向一个缺省网关,这个缺省网关一般在操作系统中已经设好,这个缺省网关的IP对应第三层路由模块,所以对于不是同一子网的数据,最先在MAC表中放的是缺省网关的MAC地址(由源主机A完成);然后就由三层模块接收到此数据包,查询路由表以确定到达B的路由,将构造一个新的帧头,其中以缺省网关的MAC地址为源MAC地址,以主机B的MAC地址为目的MAC地址。通过一定的识别触发机制,确立主机A与B的MAC地址及转发端口的对应关系,并记录进流缓存条目表,以后的A到B的数据(三层交换机要确认是由A到B而不是到C的数据,还要读取帧中的IP地址。),就直接交由二层交换模块完成。这就通常所说的一次路由多次转发。 [3] 

是Zcash隐私硬币


在古代,加密是由许多办法完成的。在中国较“流行”使用淀粉水在纸上写字,再浸泡在碘水中使字浮现出来。而外国就不同了,最经典的莫过于伯罗奔尼撒战争。公元前405年,雅典和斯巴达之间的伯罗奔尼撒战争已进入尾声。斯巴达军队逐渐占据了优势地位,准备对雅典发动最后一击。这时,原来站在斯巴达一边的波斯帝国突然改变态度,停止了对斯巴达的援助,意图是使雅典和斯巴达在持续的战争中两败俱伤,以便从中渔利。在这种情况下,斯巴达急需摸清波斯帝国的具体行动计划,以便采取新的战略方针。正在这时,斯巴达军队捕获了一名从波斯帝国回雅典送信的雅典信使。斯巴达士兵仔细搜查这名信使,可搜查了好大一阵,除了从他身上搜出一条布满杂乱无章的希腊字母的普通腰带外,别无他获。情报究竟藏在什么地方呢?斯巴达军队统帅莱桑德把注意力集中到了那条腰带上,情报一定就在那些杂乱的字母之中。他反复琢磨研究这些天书似的文字,把腰带上的字母用各种方法重新排列组合,怎么也解不出来。最后,莱桑德失去了信心,他一边摆弄着那条腰带,一边思考着弄到情报的其他途径。当他无意中把腰带呈螺旋形缠绕在手中的剑鞘上时,奇迹出现了。原来腰带上那些杂乱无章的字母,竟组成了一段文字。这便是雅典间谍送回的一份情报,它告诉雅典,波斯军队准备在斯巴达军队发起最后攻击时,突然对斯巴达军队进行袭击。斯巴达军队根据这份情报马上改变了作战计划,先以迅雷不及掩耳之势攻击毫无防备的波斯军队,并一举将它击溃,解除了后顾之忧。随后,斯巴达军队回师征伐雅典,终于取得了战争的最后胜利。

是否Coinbase送你1099


Bitcoin Cash was launched in August 2017, as a direct response to small block sizes on the Bitcoin code. 1MB block sizes were not meeting the demand of the growing community, so a group of dissatisfied crypto enthusiasts decided to create a ‘hard fork’ of the Bitcoin blockchain, with an increased 8MB block size. No one person currently takes credit for the token’s creation; rather it is attributed to a de-centralized group of developers.

其密码学中Blockchain使用


Ripple (XRP) is an independent digital asset that is native to the Ripple Consensus Ledger. With proven governance and the fastest transaction confirmation of its kind, XRP is said to be the most efficient settlement option for financial institutions and liquidity providers seeking global reach, accessibility and fast settlement finality for interbank flows.

比特币是最流行的Cryptocurrency


There are two factions of bitcoin supporters, that support large blocks or small blocks.[20] The Bitcoin Cash faction favors the use of its currency as a medium of exchange for commerce while the Bitcoin-supporting faction view bitcoin's primary use as that of a store of value.[20] Some Bitcoin supporters like to call Bitcoin Cash “Bcash,” “Btrash,” or simply a scam, while Bitcoin Cash advocates insist that their implementation is the pure form of Bitcoin.[20]

我可以买比特币在我的401K


There are two factions of bitcoin supporters, that support large blocks or small blocks.[20] The Bitcoin Cash faction favors the use of its currency as a medium of exchange for commerce while the Bitcoin-supporting faction view bitcoin's primary use as that of a store of value.[20] Some Bitcoin supporters like to call Bitcoin Cash “Bcash,” “Btrash,” or simply a scam, while Bitcoin Cash advocates insist that their implementation is the pure form of Bitcoin.[20]

cryptocurrency指数

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