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Computer Networks

QuestionAnswer
What are the layers of the OSI model in order from bottom to top? 1. Physical 2. Data Link 3. Network 4. Transport 5. Session 6. Presentation 7. Application
What is the purpose of the physical layer?
What is the purpose of the data link layer?
What is the purpose of the network layer?
What is the purpose of the transport layer?
What is the purpose of the session layer?
What is the purpose of the application layer?
What is a PAN? Personal Area Network Includes the devices than span across an individual person. Ex: Bluetooth devices
What is a LAN? Local Area Network The devices on a network that spans across a small local area. Ex: Business building or School campus
What is a MAN? Metropolitan Area Network A network that spans across a metropolitan area, connecting multiple LANs together. Ex: City or State
What is a WAN? Wide Area Network Spans across a large geographical area. Ex: Continent or Country
What is the relationship between frequency and wavelength?
What formula do you use to calculate the antenna/dish size to send a wavelength or frequency?
What is Nyquists equation for calculating network bandwidth in the absence of noise?
What is Shannon's equation for calculating network bandwidth in the presence of noise?
How do you convert absolute signal: noise ration to decibels?
Created by: n01602212
 

 



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