this is an excel assignment with the screenshot of how it looks at the end and a step-by-step explanation with the attached document. i also attached the grading.

Submit a Microsoft Word document with screenshots of your completed topology and ping tests. Your topology should identify the modifications described below: I. Modify the Marketing subnetwork. A. Add a new generic PC (labeled PC3_Marketing) and assign an IP address as indicated in the table above. B. Add a new printer (labeled Printer1_Marketing) and assign an IP address as indicated in the table above. II. Create and populate the Advertising subnetwork. A. Identify a valid network IP address with a correct subnet mask for the Advertising subnetwork. Indicate this on your topology. B. Add a new generic PC (labeled PC1_Advertising) to the Advertising subnetwork. The method of connection is up to you, but communication across the subnetworks must pass through the router (Router0_Gateway). III. Test connections between devices in the Marketing and Advertising subnetworks. Submit three screenshots of ping tests between devices on the network: A. Screenshot showing the result of executing the ping command from PC1_Marketing to PC3_Marketing B. Screenshot showing the result of executing the ping command from PC2_Marketing to Printer1_Marketing C. Screenshot showing the result of executing the ping command from PC1_Advertising to PC1_Marketing  Rubric Guidelines for Submission: Your submission should include two files. Your network modification will be in the form of a Microsoft Word document containing four screenshots: a network diagram and three ping test results. Use a filename that includes the course code, the assignment title, and your name—for example, CYB_100_Project_One_Neo_Anderson.docx. You should also submit your Packet Tracer file using the same naming convention.