lesson 4: network infrastucture
TRANSCRIPT
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Mahmmoud Mahdi
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Discussion: Network Components Common Types of Media
What is a switch? What is a router? What is a firewall?
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Is a LAN communicate device Tracks the location of computers
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Moves packets between networks Tracks networks not computers
Is required between physical locations Is sometimes referred to as a gateway
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Is a router with rules Controls inbound and outbound
communication Protects hosts behind the firewall
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What is a LAN? What is a WAN?
What is a Branch office Discussion: branch office challenges What is a perimeter network? What is remote access?
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Is a single physical location Has fast network connectivity
Has typically minimal control
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Is used between physical locations
Has slower connection speed than a LAN
Is more expensive than LAN connectivity
Uses connectivity typically provided by anothercompany
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A branch office is remote location that is connected
by WAN links to the head office with
A generally small number of users
Limited local support resources Limited local computing resources
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What are the challenges of branch officecommunication?
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Isolates LAN resources Increases security
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Provides access to LAN resources fromoutside the office
Can be VPN or dial-up
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