You are troubleshooting a network connectivity issue. In the process, you find out that the network card will not connect to the network. Which of the following should you check first to fix the problem?
Explanation
Answer: A - If you suspect that the network card is not functioning properly, perform the loop back test and interpret the results. If the test fails, you may need to reset the card, reinstall NIC drivers, or replace the card.
Key Takeaway: A loopback address is an address that tells the computer not to test its connections to another computer, but to test its own basic network setup. Successfully pinging the loopback address verifies that TCP/IP is installed and configured correctly on the local client. If your loopback test fails, it means IP stack is not answering. If the TCP drivers get corrupted, or if your network adapter is not functioning properly, or if any of the other service is interrupting IP, then a lack of response might occur.
