Answer is A, Action query
Answer:
Network administrator use the open system interconnection model to isolate the network problem as, the network administrator can easily find the problem in the system.
Network administrator regularly depicts issues by the layer number and in many cases the network problem required the network administrator to isolate the issue in which layer the maximum number of issue occurred.
By using the OSI layer, we can easily add protocols to its higher to lower layers without any type of interruption.
CAD is the answer you require, but it may also be Spread sheet
Hope this helped ♥︎
<em>r = 15 cm</em>
<em>formula</em>
<em>V = πr²×h/3</em>
<em>replace</em>
<em>4950 = 22/7×r²×21/3</em>
<em>4950 = 22/7×r²×7</em>
<em>4950 = 22×r²</em>
<em>r² = 4950/22</em>
<em>r² = 225</em>
<em>r = √225</em>
<em>r = √15²</em>
<em>r = 15 cm</em>
