Ravi Namboori - Cisco Evangelist

Ravi Namboori commands nearly two decades of experience in network and IT management. A graduate of the electronics and communication program in India, he began his career as a network administrator with Point SOFT in Hyderabad, India, where he gained key experience in systems configuration and the management of software use.Ravi Namboori maintains a number of Cisco certifications, including Cisco Internetwork Expert accreditation and Cisco design and network professional designations, as well as other industry-leading certifications. Quickly advancing through senior and management-level positions in companies across India. Before moving to the United States, he served as a network administrator at Satyam Computer Services and other technology enterprises. In the late ‘90s and early 2000s, he managed the network for Hewlett Packard’s Netherland operations, then went on to work as a senior network architect at Applied Materials and a senior network manager at Atheros Communications. He also directed IT operations at Harmonic Inc. prior to joining his present employer, where he serves as vice president of data center solutions.

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Cloud Computing

A cloud is an amalgamation of hardware, networks, storage, services, and interfaces that helps in distributing computing as a service. It has broadly three users which are end user, business management user, and cloud service provider. The end user is the one who uses the services provided by the cloud. The business management user in the cloud takes the responsibility of the data and the services provided by the cloud. The cloud service provider is the one who takes care or is responsible for the maintenance of the IT assets of the cloud.

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OSI Model

The OSI, or Open System Interconnection, model defines a networking framework to implement protocols in 7 layers. Control is passed from one layer to the other, starting at the application layer in one station, and proceeding to the bottom layer, over the channel to the next station and back up the hierarchy.

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TCP / IP

Like the seven-layer OSI Reference Model, TCP/IP protocols are based on a layered framework. TCP/IP has four layers, as shown in the following illustration.

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