Which of the following is the FIRST th...

单项选择题Which of the following is the FIRST thing a technician should do before putting their hand inside a computer case?（）

A. Acquire the appropriate tools that are going to be used.
B. Touch the case to discharge static.
C. Remove loose jewelry.
D. Refer to manufacturer documentation.

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A.STP
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C.PVC
D.UTP

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2.单项选择题Which of the following cable types is used to transmit data from a satellite dish to the satellite modem?（）

A.CAT5e
B.CAT3
C.Fiber
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3.单项选择题Which of the following standards or encryption types is the MOST secure for wireless networking?（）

A.WEP
B.AES
C.TKIP
D.DES

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4.单项选择题Which of the following is MOST critical when installing a new processor in an existing system?（）

A. Thermal paste
B. Fans
C. Drive speeds
D. Cable management

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5.单项选择题Which of the following RAID types is known as only mirroring?（）

A. RAID 0
B. RAID 1
C. RAID 5
D. RAID 10

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6.单项选择题Which of the following devices replicates and passes data to all devices connected to it?（）

A.Switch
B.Router
C.Bridge
D.Hub

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7.单项选择题Which of the following would BEST protect hardware from dust and ESD when storing it for futureusage?（）

A. Air filter
B. Anti-static bags
C. Compressed air
D. Paper bag

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8.单项选择题Which of the following network devices uses NAT to convert private IP addresses into public IPaddresses?（）

A.NAS
B.Firewall
C.Hub
D.Bridge

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9.单项选择题Which of the following ports is used for HTTPS traffic by default?（）

A.80
B.143
C.443
D.8080

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10.单项选择题Which of the following ports is used by default for IMAP traffic?（）

A.53
B.110
C.143
D.443

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