Afterbootingupanewcomputer,atechnicianobservesthattheUSBportsarenotworkingwithanyUSBdevices.WhichofthefollowingshouldbedoneFIRST?()
A. CheckthecomputertoverifythatthejumpersettingsforUSBarecorrect.
B. ConnecttheUSBdevicestoadifferentcomputertotestthedevices.
C. BuynewUSBwiresandtestUSBfunctionality.
D. ChecktheBIOStoverifythatUSBfunctionalityisenabled.
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指出报纸企业化经营与邮发合一的原因是()
A. 长期的战争造成了物质匮乏与纸价上涨
B. 社会购买力低
C. 读者范围不广
D. 建国之初几乎所有的公私应报纸发生严重的亏损现象,报业经营管理十分艰难
以下哪几项属于总线控制(busmastering)方法?()
A. 设备将数据直接转入内存。
B. 设备处理北桥芯片和处理器之间的调解。
C. 设备连接到另一台设备,但未带有处理器。
D. 设备先将数据转到处理器,然后再转入内存。
E. 设备处理南桥芯片和处理器之间的调解。
Whichofthefollowingareconsideredplugandplaytechnologiesinalaptop?()
A. SATA
B. RAID
C. USB
D. EIDE
A user can receive email but cannot send email with the email client software. Which of the following protocols is incorrectly configured?()
A. FTP
B. SMTP
C. POP
D. SNMP