202-400 무료 덤프문제 온라인 액세스

Which of the following commands can be used to list all exported file systems from a remote NFS server?

• A.nfslist
• B.exportfs
• C.mount
• D.rpcstat
• E.showmount

Where is the user foo's procmail configuration stored, if home directories are stored in /home?
Please enter the complete path to the file.

Which of the following are predefined targets for netfilter rules? (Choose TWO correct answers.)

• A.ACCEPT
• B.REROUTE
• C.JUMP
• D.NAT
• E.RETURN

After having a laptop assigned to a new subnet, a user is no longer able to login to the SSH server with an error message like Connection closed by remote host. Which of the following are possible approaches to determine and fix the cause of this problem? (Choose TWO correct answers.)

• A.Add the new IP address of the client to the AllowHosts configuration setting on the SSH server.
• B.Generate a new host key on the client and replace the current client host key on the SSH server.
• C.Check that there are no netfilter rules that reject SSH connections from the new IP address.
• D.Flush the ARP table and the neighbor discovery cache on both the SSH server and the client.
• E.Verify that the settings in /etc/host.allow and /etc/host.deny are not preventing access.

When the Apache HTTP Server is configured to use name-based virtual hosts:

• A.The Listen directive is required for each virtual host.
• B.The setting NameVirtualHost *:80 indicates that all name based virtual hosts will listen on port 80.
• C.It is required to create a Virtual Host block for the main host.
• D.It's necessary to configure a different IP address for each virtual host.
• E.Each virtual host can serve requests to exactly one hostname only.