MIDI enables people to use （1） computers and electronic musical instruments . There are actually three components to MIDI, the communications " （2） ", the Hardware interface and a distribution （3） called "Standard MIDI Files". In the context of the WWW, the most interesting component is the （4） Format. In principle, MIDI files contain sequences of MIDI Protocol messages. However, when MIDI Protocol （5） are stored in MIDI files, the events are also time-stamped for playback in the proper sequence. Music delivered by MIDI files is the most common use of MIDI today.
（1）A、personal
B、electronic
C、multimedia
D、network
（2）A、device
B、protocol
C、network
D、controller
（3）A、format
B、text
C、wave
D、center
（4）A、Video
B、Faxmail
C、Graphic
D、Audio
（5）A、messages
B、packets
C、frame
D、information
查看答案
某主机的MAC地址为00-FF-12-CD-10-22，其IP地址配置选项设置为“自动配置”，该主机可通过发送（）报文以查找DHCP服务器，并请求IP地址配置信息，报文的源MAC地址是（），源IP地址是（）。
A．DHCPdiscover
B．DHCPrequest
C．DHCPrenew
D．DHCPack
A．0:0:0:0:0:0:0:0
B．FF:FF:FF:FF:FF:FF:FF:FF
C．00-FF-12-CD-10-22
D．00-FF-12-CD-FF-FF
A．127.0.0.1
B．255.255.255.255
C．0.0.0.0
D．169.254.18.254
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