Loss of network connectivity can be frustrating to users and can be costly to a business. As an IT technician, you might be asked to restore these connections. Familiarity with TCP/IP utilities can help you narrow down the source of the problem. Open a command prompt, type ipconfig /all and press enter 1. What is the IP address?   2. What is the physical address (MAC)?   3. What is the address of the default gateway?   4. What is the address of the DHCP server?   5. What is the address of the DNS server? Type ping cengage.com and press enter.   6. What is the IP address that was pinged?   7. Where did that IP address come from? Type nslookup course.com.   8. What is the IP address returned? Open a browswer and go to sctech.edu. At the command prompt type ipconfig /displaydns and press enter. Browse through the results.   9. What is the IP address for sctech.edu?

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Network Protocols

A network protocol is a set of rules that govern how data is exchanged between the devices in a network. Network protocols enable communication between devices that are located in different parts of the world. Consequently, they are critical in today's digital communications.