ENV100H1- Final Exam Guide - Comprehensive Notes for the exam ( 146 pages long!)

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UTSG
ENV100H1
Final EXAM
STUDY GUIDE
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3/4/2014 10:51:00 PM
Chapter 7
Networking: Connecting Computer Devices
A computer network is two or more computers that are connecting via
software and hardware so they can communicate with each other
Each device connected to a network is referred to as a node
o A node can be a computer, printer, game console or router
Benefits of a network:
o Sharing internet connection
o Sharing printers and other peripherals
o Sharing files (transfer files without USB port, etc.)
o Common communications
The advantages of a network outway the few disadvantages
o The disadvantages are:
Need to purchase all the equipment involved
Equipment needs administered which is costly and time
consuming
Network Administration Involves
o Installing new computers and devices
o Monitor network and ensure performance efficiency
o Updating and installing new software on network
o Configure proper security
Data Transfer Rate (band-width) max speed data can be
transmitted between two nodes on a network
Throughput actual speed of data transfer achieved
o Always less than or equal to DTR
Measured in megabits per second (Mbps)
1mb = 1 million bits
The type of network determines how fast data moves
Network Architectures (network designs) classified according to
o Distance between nodes
o Way it is managed (administered)
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o Set rules used to exchange data between nodes
o Communications medium used to transport data
Common Types of Networks
Personal Area Network (PAN) used for communication among
devices close to one person such as smartphones, notebooks and
tablets using wireless technology (Bluetooth, WiFi)
Local Area Network (LAN) Nodes located in a small geographical
area ex. Fast food restaurant, computer lab at school
Metropolitan Area Network (MAN) Nodes located in a large
geographical area such as a city
o Many deploy MANs to provide for residents and tourists, some
use WIMAX which extends WiFi over a greater distance
Wide Area Network (WAN) Large physical distance. Ex. Internet
(covers the globe). Networked collection of LANS ex. Schools multi-
campus
Network Administration
Central tasks performed at one computer can affect other
computers on network
o Ex. Client Server Network
Client = computer users accomplish tasks and make
requests
Server = computer that provides info or resources to client
computers as well as central admin for network functions
(10+ per network)
Local configuration/maintenance must be performed on each
individual computer attached to the network
o Ex. Peer to Peer Network (P2P)
Each node can communicate directing with another node.
Nodes = peers. Ex. Printer
Simple setup, less cost
Most common home network (small schools and offices
too)
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Document Summary

Network administration: central tasks performed at one computer can affect other computers on network, ex. Peer to peer network (p2p: each node can communicate directing with another node. Advised not to install: cat 6 designed to achieve dtr that support a gigabit ethernet network. Best choice for home networking cable: cat 6a designed for ultra-fast ethernet networks that run at speeds as fast as 20 gbps. Most nics built to use wireless media but many can use wired: a broadband internet connection requires a modem, either cable or. Z f (x) dx = f (x) + c where f (x) = f (x). Well, the de nite integral can be calculated with that. Property: the de nite integral of f from a to b. Z b a f (x) dx , where f is continuous on [a, b], is equal to. F (b) f (a) where f (x) = f (x).

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