220-701单项选择题每日一练(2019.01.07)

单项选择题
A customer wants to know what version of DirectX the current workstation has installed. Which of the following command line tools would the customer use?（）
A. edit
B. systeminfo
C. gpedit.msc
D. dxdiag
单项选择题
Which of the following is the subnet mask for a Class C IP address?（）
A.10.0.0.1
B.192.168.1.1
C.255.255.0.0
D.255.255.255.0
单项选择题
A home user working outside an office reports that their laptop is no longer connecting to theInternet. Which of the following would a technician recommend to check FIRST?（）
A. Windows Firewall settings
B. DHCP settings
C. Disable HomeGroup
D. Wireless on/off switch
单项选择题
Which of the following describes a secure connection over the Internet between two sites?（）
A. FTP
B. VLAN
C. VPN
D. HTTP
单项选择题
Which of the following protocols would be used in order to log into a router to configure a VLAN?（）
A.RDP
B.SMTP
C.TELNET
D.FTP