填空题数字放映机的控制接口应采用RS-422、RS-232或者（）。
填空题
数字放映机的控制接口应采用RS-422、RS-232或者（）。
参考解析
解析：
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相关考题：
RS-232、RS-422与（）都是串行数据接口标准，最初都是由电子工业协会（EIA）制订并发布的，标准只对接口的电气特性做出规定，而不涉及接插件、电缆或协议，在此基础上用户可以建立自己的高层通信协议。
处理数字电影放映设备连接超时报警状况，应检查（）A、数字电影服务器与数字电影放映机之间的连接电缆是否接触良好B、数字电影服务器网口和数字电影放映机网口状态灯是否正常C、数字电影放映机IP地址是否正确D、数字电影放映机是否正常E、数字电影服务器是否正常
A pSeries technical specialist is performing a solutions assurance with a customer for a new single-frame 10-node p655 system being attached to a currently installed HMC. Which of the following questions should be asked to gather all the required information to determine whether the p655 solution can connect to the HMC？（）A、Are there at least ten RS-232 ports available on the HMC？B、Are there at least ten RS-422 ports available on the HMC？C、Are there at least ten RS-232 and two RS-422 ports available on the HMC？D、Are there at least two RS-232 and ten RS-422 ports available on the HMC？
单选题A pSeries technical specialist is performing a solutions assurance with a customer for a new single-frame 10-node p655 system being attached to a currently installed HMC. Which of the following questions should be asked to gather all the required information to determine whether the p655 solution can connect to the HMC？（）AAre there at least ten RS-232 ports available on the HMC？BAre there at least ten RS-422 ports available on the HMC？CAre there at least ten RS-232 and two RS-422 ports available on the HMC？DAre there at least two RS-232 and ten RS-422 ports available on the HMC？
多选题处理数字电影放映设备连接超时报警状况，应检查（）A数字电影服务器与数字电影放映机之间的连接电缆是否接触良好B数字电影服务器网口和数字电影放映机网口状态灯是否正常C数字电影放映机IP地址是否正确D数字电影放映机是否正常E数字电影服务器是否正常