单项选择题 A network technician arrives to work and discovers users are having a problem connecting the company server. The server operator was working on upgrades the night before. Which of the following documents should the technician use to attempt to discover the problem?（）

单项选择题 Which of the following would contain information regarding network device alerts using SNMP?（）

单项选择题 Which of the following interfaces is used to connect analog devices to the Internet?（）