单选题在IP传输中，用于查询和差错报告的协议是( ),它封装在(回答此处)报文中进行传送。
单选题The Internet of( 1)(IoT) describes physical objects that are embedded with Sensor，processing abilities，softwares，and other technologies that connect with other devices and systems over the ( 2) or other communication and exchange data networks .Over the past few years, IoT has become one of the most important technologies of the ( 3 ) centuryWe can connect objects to the Internet via embedded devices. By means of( 4) computing, the cloud, big data, and mobile technologies, physical things can share and collect data with minimal human intervention. Traditional fields of embedded systems，wireless ( 5) networks (WSNs)，control systems，automation, independently and collectively enable IoT.回答5处
单选题在计算机系统中，利用OCR （ Optical Character Recognition)技术可以实现印刷文字的( )。
单选题浏览器开启无痕浏览模式时，( )仍然会被保存到本地。
单选题下列不属于计算机病毒的是( )。
单选题每个VLAN是一个( )，不同VLAN的主机相互访问要通过(回答此处)。
单选题IP报文首部中不包含( )
单选题在SNMP的各个版本中，（ )版本支持加密特性。
单选题下面的计算机语言中，( )是通过自定义标记描述数据、并作为数据存储与传输工具的一种标记语言。
单选题下列地址( )表示子网内所有路由器。
单选题以下关于入侵检测系统(IDS)的描述中，正确的是( )。
单选题在计算机系统中，存储部件按照层次结构进行分级组织的主要目的是( )
单选题DPSK调制技术采用( )
单选题在IP传输中，用于查询和差错报告的协议是(回答此处),它封装在( )报文中进行传送。
单选题以下IPv6地址( )是组播地址。
单选题The Internet of( 1)(IoT) describes physical objects that are embedded with Sensor，processing abilities，softwares，and other technologies that connect with other devices and systems over the ( 2) or other communication and exchange data networks .Over the past few years, IoT has become one of the most important technologies of the ( 3 ) centuryWe can connect objects to the Internet via embedded devices. By means of( 4) computing, the cloud, big data, and mobile technologies, physical things can share and collect data with minimal human intervention. Traditional fields of embedded systems，wireless ( 5) networks (WSNs)，control systems，automation, independently and collectively enable IoT.回答1处
单选题WLAN环境中，2.4G频段标准带宽采用( )。
单选题高速缓存(Cache)在提升计算机系统性能方面发挥着重要作用，将Cache分为多级时，离CPU近的Cache，其( )。