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Question 391 - SK0-005 discussion

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An administrator is troubleshooting connectivity to a remote server. The goal is to remotely connect to the server to make configuration changes. To further troubleshoot, a port scan revealed the ports on the server as follows:

Port 22: Closed

Port 23: Open

Port 990: Closed

Which of the following next steps should the administrator take?

Reboot the workstation and then the server.

A.
Open port 990 and close port 23.
Answers
A.
Open port 990 and close port 23.
B.
Open port 22 and close port 23.
Answers
B.
Open port 22 and close port 23.
C.
Open all of the ports listed.
Answers
C.
Open all of the ports listed.
D.
Close all of the ports listed.
Answers
D.
Close all of the ports listed.
Suggested answer: B

Explanation:

Port 22 is used for SSH (Secure Shell), which is a secure and encrypted protocol for remote access to a server. Port 23 is used for Telnet, which is an insecure and unencrypted protocol for remote access. Port 990 is used for FTPS (File Transfer Protocol Secure), which is a secure and encrypted protocol for file transfer. The administrator should open port 22 and close port 23 to enable SSH and disable Telnet, as SSH is more secure and reliable than Telnet. The administrator does not need to open port 990, as FTPS is not required for making configuration changes123.

References = 1: Remote Desktop - Allow access to your PC from outside your network(https://learn.microsoft.com/en-us/windows-server/remote/remote-desktop-services/clients/remote-desktop-allow-outside-access) 2: Test remote network port connection in Windows 10 - Winaero(https://winaero.com/test-remote-network-port-connection-in-windows-10/) 3: Windows Command to check if a remote server port is opened?(https://superuser.com/questions/1035018/windows-command-to-check-if-a-remote-server-port-is-opened)

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asked 02/10/2024
Cheah Eng Soon
34 questions
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