tailieunhanh - CCNA 1 and 2 Companion Guide, Revised (Cisco Networking Academy Program) part 97

Cisco Networking Academy Program CCNA 1 and 2 Companion Guide, Revised part 97 is the Cisco approved textbook to use alongside version of the Cisco Networking Academy Program CCNA 1 and CCNA 2 web-based courses. The topics covered provide you with the necessary knowledge to begin your preparation for the CCNA certification exam (640-801, or 640-821 and 640-811) and to enter the field of network administration. | B Page 929 Tuesday May 20 2003 4 54 PM Installation Process 929 3. Before cutting into the wall use a carpenter s level to make sure the opening will be straight. Use a utility knife to cut the opening. Push the knife through the drywall inside the template outline until you have an opening large enough to accommodate the blade of either a keyhole saw or a drywall saw. 4. Insert the saw into the hole and cut along the edge of the penciled outline. Continue cutting carefully along the line until you can pull out the piece of drywall. Make sure the box or bracket will fit the opening. If you are using a box to flush-mount the jack do not secure the box until you bring the cable to the opening. Mounting Jacks in Plaster It is more difficult to cut into a plaster wall than it is to cut into drywall. To achieve the best results follow these steps 1. Determine the appropriate location for the jack. 2. Use a hammer and chisel to remove the plaster from the wall so that the lath behind the plaster is exposed. 3. Use a utility knife to carefully trim plaster away from the lath. 4. Place the template against the lathwork so that it overlaps three strips of lath equally at the top and bottom of the opening. Trace an outline around the template. Use an electric saw to cut away the full lath strip that is exposed in the center of the opening. 5. Make several small cuts on the full strip first on one side and then on the other. Continue to make these small cuts until you completely cut through the center lath. Finish preparing the opening by removing the required portions of the lath strips at the top and bottom. Cut vertically along the sides of the hole making several small cuts first on one side and then on the other as before. Continue until the laths are notched evenly with the top and bottom of the hole. Now cut a curve in the bottom piece of lath from the top-right corner to the bottom-left corner. Bottom out the curve so that it is flat just before it gets to