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The correct answer is D.

OBJ-5.3: Since this is a Windows-based network, the client is likely attempting to connect to the servers using NetBIOS. NetBIOS stores a local cached name table in the LMHOSTS file on each client. If the entry in the client file is pointing to the wrong IP, this could cause the connectivity issues described. Therefore, the system administrator should enter the “nbtstat -R” command to purge and reload the cached name table from the LMHOST file on their Windows workstation. The nslookup command is used to query the domain name system (DNS) to obtain information about host addresses, mail exchanges, nameservers, and related information. The nslookup command has an interactive and non-interactive mode. The ipconfig command is used on Windows devices to display the current TCP/IP network configuration and refresh the DHCP and DNS settings on a given host. The route command is used to create, view, or modify manual entries in the network routing tables of a computer or server.

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