链路层QoS技术主要针对ATM(Asynchronous Transfer Mode，异步传输模式)、帧中继、令牌环等链路层协议支持QoS。作为一种面向连接的技术，ATM提供对QoS最强有力的支持，而且可以基于每个连接提供特定的QoS保证。帧中继网络确保连接的CIR(Committed Information Rate，承诺信息速率)最小，即在网络拥塞时，传输速度不能小于这个值。令牌环和更新的IEEE802.1p标准具有区分服务的机制。
链路层QoS技术主要针对ATM(Asynchronous Transfer Mode，异步传输模式)、帧中继、令牌环等链路层协议支持QoS。作为一种面向连接的技术，ATM提供对QoS最强有力的支持，而且可以基于每个连接提供特定的QoS保证。帧中继网络确保连接的CIR(Committed Information Rate，承诺信息速率)最小，即在网络拥塞时，传输速度不能小于这个值。令牌环和更新的IEEE802.1p标准具有区分服务的机制。
Durov said on his Telegram channel today that the two and a half year blockchain and crypto project has been put to sleep. Ironically, after leaving Russia because the government wanted his encryption keys to his social media firm, Durov’s cryptocurrency idea lost steam because of a U.S. court. “The technology we created allowed for an open, free, decentralized exchange of value and ideas. TON had the potential to revolutionize how people store and transfer funds and information,” he wrote on his channel. “Unfortunately, a U.S. court stopped TON from happening.”
How Does Bitcoin Work?
Bitcoin is built on a distributed digital record called a blockchain. As the name implies, blockchain is a linked body of data, made up of units called blocks that contain information about each and every transaction, including date and time, total value, buyer and seller, and a unique identifying code for each exchange. Entries are strung together in chronological order, creating a digital chain of blocks. “Once a block is added to the blockchain, it becomes accessible to anyone who wishes to view it, acting as a public ledger of cryptocurrency transactions,” says Stacey Harris, consultant for Pelicoin, a network of cryptocurrency ATMs. Blockchain is decentralized, which means it’s not controlled by any one organization. “It’s like a Google Doc that anyone can work on,” says Buchi Okoro, CEO and co-founder of African cryptocurrency exchange Quidax. “Nobody owns it, but anyone who has a link can contribute to it. And as different people update it, your copy also gets updated.”
