单项选择题

Which of the following is the NEXT step in the troubleshooting theory after identifying the problem?（）

A. Establish a theory of probable cause
B. Test the theory
C. Implement preventative measures
D. Establish a plan of action

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热门试题

多项选择题Which of the following network connections would use a standard POTS line to both send andreceive Internet packets?（）

A.Dial-up
B.DSL
C.Satellite
D.OC3
E.T1

单项选择题Which of the following is needed to boot into the Recovery Console in Windows XP?（）

A. Emergency Restore Disk
B. System Restore point
C. Original Installation CD
D. Automated System Recovery

单项选择题Which of the following is the MOST common secure web server port?（）

A.22
B.80
C.110
D.443

多项选择题A client states they are receiving poor signal strength on their wireless Internet connection. Which of the following is MOST likely causing the interference?（）

A. Cordless phones
B. Drywall
C. Access points
D. Microwaves
E. Fluorescents lights

单项选择题Which of the following BEST describes a hub?（）

A. Determines the best route to transmit data
B. Inspects traffic and accepts or declines transmission
C. Broadcasts data to specific network devices
D. Broadcasts data to all network devices