The first thing a PC client does when trying to access a webpage is to send a query to its specified DNS server

What are some of the improvements found in IPv6?

What will be an ideal response?

What does the following function do?

``` int fun (string a, int k) { char blank = ' '; bool looking = true; while (k >= 0 && looking) if (a[k] == blank) --k; else looking = false; if (looking) return -1; else return k; } ``` a. Finds the subscript of the first nonblank character in array a. b.Finds the subscript of the last nonblank character in array a. c. Counts the number of nonblank characters in array a. d. Finds the subscript of the first blank in array a. e. Finds the subscript of the last blank in array a.