单选题A technician works for a company that has recently been affected by a virus. The virus entered the network by using port 6000. Port 6000 is used by an application located on a server. The technician has been asked to block this port on all servers and computers except for the one server which uses this port. Which of the following should the technician do？（）AUpdate the antivirus applicationBInstall critical update security patchesCAdjust the software firewall settingsDReplace the current antivirus program
单选题
A technician works for a company that has recently been affected by a virus. The virus entered the network by using port 6000. Port 6000 is used by an application located on a server. The technician has been asked to block this port on all servers and computers except for the one server which uses this port. Which of the following should the technician do？（）
A
Update the antivirus application
B
Install critical update security patches
C
Adjust the software firewall settings
D
Replace the current antivirus program
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