Course Intermediate  11245

Course Introduction："Self-study IT Network Linux Load Balancing Video Tutorial" mainly implements Linux load balancing by performing script operations on web, lvs and Linux under nagin.

Course Advanced  17581

Course Introduction："Shangxuetang MySQL Video Tutorial" introduces you to the process from installing to using the MySQL database, and introduces the specific operations of each link in detail.

Course Advanced  11291

Course Introduction："Brothers Band Front-end Example Display Video Tutorial" introduces examples of HTML5 and CSS3 technologies to everyone, so that everyone can become more proficient in using HTML5 and CSS3.

Course Introduction：2g online means that the other party's current network status is logging into QQ under the 2G network; when the other party logs into QQ using 3G/4G/WIFI status, the online status will also change to the current network status; the G in 2G It refers to Generation, which means generation, so 1G means the first generation mobile communication system, and 2G, 3G, and 4G refer to the second, third, and fourth generation mobile communication systems respectively.

2022-11-25 comment 0  90135

Course Introduction：There are two reasons why 4g becomes 2g: 1. There is no 4G signal coverage nearby or the signal is poor, but there is 2G signal coverage. The mobile phone can only access the 2G network. This situation may only exist in desolate wilderness or high mountain areas. ; 2. If the user does not activate VoLTE, making or receiving calls will fall back from 4G to 2G.

2022-11-14 comment 0  79664