220-702单项选择题每日一练(2019.01.20)

单项选择题
A technician is testing a power supply for correct output voltages at the HDD power connector.Which of the following voltages should the technician expect for a correctly working power supply?（）
A.6V
B.9V
C.12V
D.24V
单项选择题
When installing a wireless access point, which of the following should the technician perform FIRST?（）
A. Enable MAC filtering.
B. Download and install the latest firmware.
C. Disable DHCP.
D. Change the default password.
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
单项选择题
Which of the following is MOST likely causing a client’s computer to have an IP address of169.254.0.10?（）
A. The office is using a public IP scheme.
B. The client is set to a static IP address.
C. The DHCP server is out of addresses.
D. The firewall on the PC is down.
单项选择题
When troubleshooting an 802.11g network. Which of the following can interfere with the network?（）
A. 2.4 GHz cordless phone
B. 900 MHz cordless phone
C. Bluetooth headset
D. Bluetooth printer