Which attribute is used in <a> tag for the address of the link?

src href rel

<a href="http://coursesweb.net/" title="CoursesWeb.net">CoursesWeb.net</a>

Which CSS property sets the type of the text font?

font-family text-decoration font-size

h2 {
  font-family:"Calibri",sans-serif;
}

What instruction selects all the <div> tags with class="cls"?

querySelector("div.cls") getElementsByTagName("div") querySelectorAll("div.cls")

var elm_list = document.querySelectorAll("div.cls");
var nr_elms = elm_list.length;       // number of selected items
alert(nr_elms);

Indicate the function that can be used to get the sum of values in an array.

array_sum() array_diff() array_shift()

$arr =[1, 2, 3, 4);
$arr_sum = array_sum($arr);
echo $arr_sum;       // 10

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