You work as a Network Administrator of a TCP/IP network.

NSLOOKUP is a tool for diagnosing and troubleshooting Domain Name System (DNS) problems. It performs its function by sending queries to the DNS server and obtaining detailed responses at the command prompt. This information can be useful for diagnosing and resolving name resolution issues, verifying whether or not the resource records are added or updated correctly in a zone, and debugging other server-related problems. This tool is installed along with the TCP/IP protocol through the Control Panel. Answer: A is incorrect. The ping command-line utility is used to test connectivity with a host on a TCP/IP-based network. This is achieved by sending out a series of packets to a specified destination host. On receiving the packets, the destination host responds with a series of replies. These replies can be used to determine whether or not the network is working properly. Answer: B is incorrect. IPCONFIG is a command-line utility used to display current TCP/IP network configuration values and update or release the Dynamic Host Configuration Protocol (DHCP) allocated leases. It is also used to display, register, or flush Domain Name System (DNS) names. Answer: C is incorrect. TRACERT is a route-tracing Windows utility that displays the path an IP packet takes to reach the destination. It shows the Fully Qualified Domain Name (FQDN) and the IP address of each gateway along the route to the remote host.