Mobile terminal test question distributing and answering method based on MQTT (message queuing telemetry transport) protocol
A mobile terminal, test question technology, applied in the direction of instruments, digital data processing, text database browsing/visualization, etc., to achieve the effect of easy expansion, convenient big data calculation, and saving traffic
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[0036] The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.
[0037] Such as figure 1 , 2 A method for distributing and answering test questions on a mobile terminal based on the MQTT protocol, comprising the following steps:
[0038] S1. The teacher-side application logs in to the MQTT server, subscribes to the "teacher" topic, and starts listening to messages from the MQTT server.
[0039] S2. The student application logs in to the MQTT server, subscribes to the "all students" topic, and starts listening to messages from the MQTT server.
[0040] S3. If the test questions sent by the teacher are in picture format, the pictures of the test questions need to be uploaded to the file server first. Otherwise skip to S5.
[0041] S4. The teacher terminal receives the URL path of the test question picture returned by the picture ser...
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