The conference room has a switch port available for use by the presenter during classes, and each presenter uses the same pc attached to the port. you would like to prevent other pcs from using that port. you have completely removed the former configuration in order to start anew. which of the following steps is not required to prevent any other pcs from using that port?

Ithink your answer will be a

Answercombo box

You start out as beginner, then you will reach hand with 100 points, 250 for ambitious, 500 points + 5 brainliest for virtuoso, 1000 and 10 for expert, 3000 and 15 for ace, and 15000 and 50 for genius. it stops there. 

Function tipcalculate (slider, bill){  var tip = document.getelementbyid('tipamount');   var slideval = document.getelementbyid('slideval');   var bill = document.getelementbyid(bill).value;   var prcnt = slider * .01;       if (bill == null || bill == '') {      tip.innerhtml = ' enter an amount';       return false;   }  if(isnan(bill)) {      tip.innerhtml = ' enter a number';       return false;   }  if(bill > = 0){      tip.innerhtml = '$' + (bill * prcnt) .tofixed(2);   slideval.innerhtml = slider + '%';   }}