What is a Network? A network refers to two or more connected computers that can share resources such as data, a printer, an Internet connection, applications, or a combination of these resources.

Layering In An Internet Our layering diagrams only show two computers connected to a network The Internet contains multiple networks interconnected by routers Routers only need layer 2 and layer 3 …

Internal nodes of the network called routers or switches will then try to ensure that the packet is delivered to the requested destination. The concept of packets and packet switching was first …

From a performance standpoint, we study the causes of packet delay and loss in computer network. We identify key architectural principles in networking, including layering and service models. We provide …

The specification of the network topology diagram requires the definition of the characteristics and entities underlying the network: -Geographical locations of the different components or subnets …

WHAT IS A NETWORK? A concrete (measurable – more on this later) pattern of relationships among entities in a social space Examples: Social networks among individuals: friendship, advice-seeking, …

Networks What is a network? A system of lines/channels that interconnect E.g., railroad, highway, plumbing, communication, telephone, computer What is a computer network? A form of …