The term "Internet" is an abbreviation of the term "Internetwork." An Internetwork is a network of networks. Just like Interstate highways connect states together, the "Internetwork" or "Internet" connects networks together.
Internetwork is a generic term for any 2 networks being connected together. The 'Internet" is a term for the world wide internetwork as a whole. Example: I have 2 networks at home that are connected as an internetwork, but I don't have all the "Internet" at home, but I do connect to it.
Internetwork Packet Exchange
internetwork packet exchange
An intranet is is a set of networks that are under the control of a single administrative entity. An internetwork is the connection of multiple computer networks via a common routing technology using routers - "THE Internet" is the most obvious example of an internetwork, but you can have a campus or corporate internetwork/internet that is isolated from or connected to THE Internet.
One can take the Cisco Certified Internetwork Expert (the CCIE) test can be taken at community centers on advertised dates or online at the Cisco Certified internetwork Expert website.
the types of internetworks is internet and networks combine
CCIE stands for Cisco Certified Internetwork Expert.