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Module 3 - Coggle Diagram
Module 3
Communication fundamentals
governed by protocols
people should used rules established to govern a conversation
common language & grammar
speed & timing of delivery
identified sender & receiver
confirmation/acknowledgement of the msg
Elements
source/sender
destination/receiver
channel/media
network protocols
msg formatting & encapsulation: specific format/structure depending on the msg type
msg size
msg encoding: convert info to a suitable form for transmission
msg timing: flow control, responds tymout, access method
msg delivery options
msg delivery options
multicast
broadcast
unicast
Protocols
Devices implemented: hardware & software
functions
flow control
sequencing
reliability
error detection
application interface
addressing
Interaction
TCP
IP
HTTP
Ethernet
Protocol suites
Viewed in layers: higher & lower layers
Eg: TCP/IP, OSI protocols, Apple talk, Novell Netware
Standards organizations
Internet architecture board (IAB)
Internet engineering task force (IETF)
Internet society (ISOC)
Internet research task force (IRTF)
Data Encapsulation: protocols add extra info to the transmitted data
segmenting: breaking msgs into bits
benefits: increase speed & efficiency
multiplexing: combine & send multiple data streams over a single medium
sequencing: numbering segements the data can be assembled back in order at the received end (TCP does dis)
Addressing (used by data-link & network layers)
Network layer addresses: comes to use when devices network portions are different (in different networks)
Data link layer: layer 3 provide layer 2 default gateway IP add when final destinat is remote