單項(xiàng)選擇題

Which of the following will cause a ghost image on a printout?（）

A. Problem with the developing drum
B. Problem with the formatter board
C. Worn pickup rollers
D. Scanner unit is defective

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單項(xiàng)選擇題

Which of the following commands would a technician use to view the active applicationconnections on a local PC to the network?（）

A.ipconfig
B.netstat
C.nslookup
D.net use

單項(xiàng)選擇題

Which of the following protocols uses port 443 by default?（）

A.LDAP
B.SNMP
C.HTTPS
D.HTTP