DevNet Associate DEVASC 200-901 Official Certification Guide by Adrian Iliesiu (z-lib.org)

1. vManage

2. vSmart

3. vEdge

4. vBond

FOUNDATION TOPICS

WHAT ARE NETWORKS?

NIST CNSSI 4009 defines a network as follows:

information system(s) implemented with a collection

of interconnected components. Such components may

include routers, hubs, cabling, telecommunications

controllers, key distribution centers, and technical

control devices.

In other words, a network is formed when two or more
systems are connected to each other and are able to
communicate with each other. With different types of
connections, various types of networks can be built.
Three different factors are used to classify networks:

Topology

Standard

Size or location

Topology refers to how the various nodes or elements
connect. Figure 17-1 shows three prominent network
topologies:

Bus: In a bus network, all the elements are connected one after the

other.

Star: In a star topology, all nodes in the system are connected to a

central point.

Ring: A ring topology is very similar to a star except that a token is

passed around, and a node can transmit only when it has a valid token.