Fill in the blanks in the following questions. 1. is a form of online real-time communication between two or more people based on entered text. 2. is a web page that is easy to update and edit by someone who wants to publish a record of his or her thoughts on a subject. 3. is a web page that groups of people can edit and view together. 4. is an audio-based medium that lets people record audio and publish it on a website. 5. is a Cisco collaborative learning tool that provides a way to build virtual representations of networks that behave much like actual networks. Question 2: Define Table lists the four fundamental elements of a network