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。
Pinterest (PINS) closed at $71.75 in the latest trading session, marking a -0.18% move from the prior day. This change lagged the S&P 500's daily gain of 0.1%. Meanwhile, the Dow gained 0.9%, and the Nasdaq, a tech-heavy index, lost 0.59%.
Heading into today, shares of the digital pinboard and shopping tool company had lost 17.41% over the past month, lagging the Computer and Technology sector's loss of 5.38% and the S&P 500's gain of 0.71% in that time.
Investors will be hoping for strength from PINS as it approaches its next earnings release. The company is expected to report EPS of $0.07, up 170% from the prior-year quarter. Our most recent consensus estimate is calling for quarterly revenue of $467.87 million, up 72.05% from the year-ago period.
Telegram has exploded as a hub for cybercriminals looking to buy, sell and share stolen data and hacking tools, new research shows, as the messaging app emerges as an alternative to the dark web.An investigation by cyber intelligence group Cyberint, together with the Financial Times, found a ballooning network of hackers sharing data leaks on the popular messaging platform, sometimes in channels with tens of thousands of subscribers, lured by its ease of use and light-touch moderation.聊天软件定制开发 风车 飞鸽 哇呼 谭聊 功能最全最稳定的第三方聊天软件 from de
