Question: A network user reports that they cannot connect to any websites, but they can still access shared folders on the local network. You suspect a DNS issue. What is the correct order of steps to troubleshoot this problem? $($The most efficient method$)$

A$)$

$1.$ Check the DNS server configuration on the user$$s PC$.$

$2.$ Ping a public IP address $($e$.$g$.,8\mathrm{.}8\mathrm{.}8\mathrm{.}8)$ to verify internet connectivity.

$3.$ Flush the DNS cache on the user$$s PC$.$

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B$)$

$1.$ Flush the DNS cache on the user$$s PC$.$

$2.$ Check the DNS server configuration on the user$$s PC$.$

$3.$ Ping a public IP address $($e$.$g$.,8\mathrm{.}8\mathrm{.}8\mathrm{.}8)$ to verify internet connectivity.

$\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$

C$)$

$1.$ Ping a public IP address $($e$.$g$.,8\mathrm{.}8\mathrm{.}8\mathrm{.}8)$ to verify internet connectivity.

$2.$ Check the DNS server configuration on the user$$s PC$.$

$3.$ Flush the DNS cache on the user$$s PC$.$

$\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$

D$)$

$1.$ Check the DNS server configuration on the user$$s PC$.$

$2.$ Flush the DNS cache on the user$$s PC$.$

$3.$ Ping a public IP address $($e$.$g$.,8\mathrm{.}8\mathrm{.}8\mathrm{.}8)$ to verify internet connectivity.$*$