a$)$ Suppose we submit this dns query: $ dig $cmn-tls.$ map. fastly, net and then receive the dns response indicated by this hex dump:

This dns response contains four answers $($followed by one "additional record"$),$ and each of those answers $($i$.$e$.,$ ip addresses$)$ starts with a $151$ and ends in a $5($when converted into the usual "dotted deciaml" fomat$).$ What are the four ip addresses that are returned by this query?

b$)$ Here's a hex dump of the dns request message that dig sent:

Now, image that instead of querying about $c-ttl.$ map.fastly. net, we asked instead about cn$.$fast. How would the query message under this scenario differ from the query message above? You don't have to write the whole resulting query message hex dump. Circle the portion of the query message hex dump that's going to change$/$be replaced, and then write below the series of hex digits that will replace the hex digits you circled above. Draw a circle around the replacement hex digits you write below, just so it's totally clear.

You don't have to circle$/$write replacement values for the ascii display on the right, just the bex values. Though the correspondence provided by the ascii chars will be very helpful in parsing$/$updating the hex values.