You’ve got mail! Oh, wait.

You suspect that a bad DNS server is causing your mail server to fail when sending outbound messages. Which of these Windows commands can tell you which DNS server you are currently using?

What’s your DNS?

Your computer is taking a long time to perform name resolutions when you’re browsing, so you’d like to see which DNS server is configured on your workstation. Which of these command line utilities can provide DNS configuration information?

CompTIA A+ 220-701: 4.1 – Protocols and Addresses

The fundamental languages used over our computer networks are a standard set of protocols that are used around the world. In this video, you’ll learn about protocols and the set of standards associated with TCP/IP. You’ll also learn the essentials of TCP/IP and how subnetting can be used to build today’s modern networks.