Luke is frustrated as he is often criticized by his employer for not meeting deadlines. He decides to take revenge on his employer for criticizing him in front of all his peers. Luke floods his organization's server with multiple requests so that the server can no longer handle genuine requests. This impacts the productivity of the organization. This act of sabotage is called .
A. a denial of service attackB. Wi-fi piggybackingC. war drivingD. a brick breaking attack

An investor purchases 500 shares of nevada industries common stock for $22.00 per share today. at t = 1 year, this investor receives a $0.42 per share dividend (which is not reinvested) on the 500 shares and purchases an additional 500 shares for $24.75 per share. at t = 2 years, he receives another $0.42 (not reinvested) per share dividend on 1,000 shares and purchases 600 more shares for $31.25 per share. at t = 3 years, he sells 1,000 of the shares for $35.50 per share and the remaining 600 shares at $36.00 per share, but receives no dividends. assuming no commissions or taxes, the money-weighted rate of return received on this investment is closest to: