Here, networking experience is crucial in determining the number of concurrent connections, as well as the number of sustained bytes per second a front-line server can handle.
在判断并发连接数量以及每个前端服务器每秒可以处理的字节数时，网络经验是很重要的。
2
In large batch systems backups can be challenging, especially if the system is running concurrent with on-line on a 24-7 basis.
对于大型批量系统，备份将是一个挑战，如果系统是7x24小时联机并发运行时，更是如此。
3
With the widespread use of map websites and on-line navigation systems, the need for multi-user concurrent queries for travel information is ever-increasing.