CompTIA认证考试章节练习(2018.08.19)

单项选择题
Which of the following is the BEST tool to troubleshoot a DB-9 port?（）
A. Ohm meter
B. Anti-static wrist strap
C. Oscilloscope
D. Loopback plug
单项选择题
Which of the following could cause an NTLDR error on reboot?（）
A. Processor is failing
B. Services failed to start on bootup
C. RAM is faulty
D. Boot.ini file is corrupt
多项选择题
Which of the following describes how to set the Read-only attribute on a folder？（）
A.Right-click the folder > Properties > Security tab > select the username from the list > Permissions > clear the box labeled Read > OK
B.Open the folder > Tool > Folder Options > General tab > Read-only > OK
C.Open the Command Prompt > type attrib r [drive：][path] > Enter
D.Open the Command Prompt > type attrib +r [drive：][path] > Enter
E.Right-click the folder > Properties > General tab > Attributes > select Read-only > OK
单项选择题
Bob, a technician, wants to run antivirus scans on every machine on a daily basis. To minimize the impact to all system resources, which of the following is the BEST time to schedule the scans to run?（）
A. 5:00 p.m. - 7:00 p.m.
B. 7:30 a.m. - 9:30 a.m.
C. 11:00 p.m. - 1:00 a.m.
D. 12:00 p.m. - 2:00 p.m.
单项选择题
Which of the following cabling would be MOST commonly used with digital volume controls？（）
A.Unshielded twisted pair
B.RJ-59
C.16/4 solid conductors
D.Speaker Wire
单项选择题
Mike, a technician, is working on several workstations and needs to continuously investigatesystems so he knows when the workstations reboot. Which of the following commands could beused?（）
A. ping -l 9999
B. tracert -d
C. ping -t
D. tracert -h 9999
单项选择题
A user has a 1TB external hard drive connected to a desktop system. When the user searches the drive for a file, the response to the search is very slow. How can the user improve the performance of the file searches on the external drive?（）
A. Change the sort order of the files.
B. Make sure that all of the files are in folders that are in alphabetical order.
C. Search multiple drive letters at the same time.
D. Turn on indexing for the assigned drive letter.
多项选择题
Which of the following are forms of gigabit Ethernet that require the use of fiber optic cables？（）
A.1000Base-CX
B.1000Base-TX
C.1000Base-SX
D.10Base-T
E.1000Base-T
F.1000Base-LX
单项选择题
All users within an office are wirelessly connected to a network, except one user that has a valid connection on a leased IP address in a different range. Which of the following is a possible cause of the user having a different IP address range?（）
A. The wireless access point is using MAC address filtering
B. The user has connected to a nearby wireless access point from another office
C. The user has configured the wireless settings with the wrong encryption type
D. The wireless access point has SSID broadcast disabled
单项选择题
A user replaces a laptop’s wireless PCMCIA card with a different vendor’s card. All of the new card configuration steps have been followed. The OS sees all known wireless networks but cannot connect to the user’s network.Which of the following is the MOST likely reason for this behavior?（）
A. DMZ is enabled.
B. MAC filtering is enabled.
C. WEP is being used.
D. SSID broadcast is disabled.