单项选择题
A user reports that the laser printer is constantly jamming on humid days. Which of the following is the MOST likely resolution to the problem?（）
A. Replace the paper with thinner paper.
B. Replace the toner cartridges.
C. Replace the fuser.
D. Replace the print heads.
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When setting up a new small office home office (SOHO) wireless network, which of the following is MOST likely to be the default wireless channel?（）
A.2
B.5
C.6
D.9 -
单项选择题
A user would like to ensure that only their family and their laptops can access a newly installed wireless router. Which of the following BEST accomplishes this?（）
A. MAC filtering
B. Disable DHCP
C. Static IP addresses
D. Port forwarding -
单项选择题
Which of the following wireless networking standards can operate at two different frequenciessimultaneously?（）
A.802.11a
B.802.11b
C.802.11g
D.802.11n
