Cisco Networking

Cisco Networking What does the application layer provide? - the interface between the applications we use to communicate and the underlying network over which our messages are transmitted What are the three elements of communication? - Sender, Receiver, Chanel What are the five aspects of the information network we will focus on in this course? - Devices that make up the network Media that connect the devices Messages that are carried across the network Rules and processes that govern network communications Tools and commands for constructing and maintaining networks What is the definition of the term network for this course? - data or information networks capable of carrying many different types of communications, including traditional computer data, interactive voice, video, and entertainment products. What would happen to the network if a message was sent as one massive continuous stream of bits? - no other device would be able to send or receive messages on the same network while this data transfer was in progress Define segmentation of messages - division of the data stream into smaller pieces What are the 2 advantages of segmentation? - many different conversations can be interleaved on the network segmentation can increase the reliability of network communications What is multiplexing? - process used to interleave the pieces of separate conversations together on the network What is hardware on a network? - the visible components of the network platform the visible components of the network platform - Computers (work stations, laptops, file servers, web servers) Network printers VoIP phones Security cameras Mobile handheld devices (such as wireless barcode scanners, PDAs) What is the definition of a host? - either the source or destination of a message transmitted over the network What is the definition of a server? - hosts that have software installed that enables them to provide information and services