You have configured a router to point to the DNS server with the IP address 10.2.2.2 and configured the domain name of sybex.com. However, you cannot resolve the host routerb.sybex.com. Which Windows command will help you verify the DNS name resolution?

The command nslookup routerb.sybex.com will allow you to positively verify name resolution. The ping command should not be used because the failure of ICMP echo will make the command fail, giving you a false result. The tracert command is used for tracing the route a packet takes, and like ping it can give a false positive if the host is unreachable. The dig command is a great tool to use in place of nslookup for verifying DNS, but it is not installed on Windows by default.