Unit 1 Flashcards
How long can you run an Ethernet cable?
100 meters
How long can you run a fibre cable?
550 metres
What are some advantages of wireless network?
Fast installation, no wiring, access to network anywhere in range
What are some disadvantages to wireless networking?
Lower security, slower network, interference
What are the WiFi modes?
Ad Hoc Mode, Infrastructure mode, Mesh Mode, Monitor Mode, Promiscuous Mode, Repeater Mode, Bridged Mode
What is Ad Hoc Mode?
Independent devices without any infrastructure (I/BSS)
What is Infrastructure Mode?
Consists of APs, BSA (Basic Service Area, SSID, Distribution system (router)
What is Mesh mode?
Access points can communicate to all other access points, if one goes down it reconnects to another node
What is Monitor mode?
Sniffing raw traffic, used for design, does not need to be on authenticated
What is promiscuous mode?
Sniffing raw traffic on the network, after is has been connected/authenticated
What is repeater mode?
Rebroadcasts existing WiFi network
What is bridged mode?
Borrows existing wireless internet using a different SSID and password (two networks, one internet)
What does a WLAN controller do?
Extended Service Set (different channels), creates large networks and controls devices on them
What are the IEEE standards?
802.11b, a, g, n, and ac
What are the primary differences between 2.4 and 5 Ghz?
11 channels vs 24 channels
5 Mhz apart vs 20 mhz apart
20 mhz wide vs 20-40 mhz
3 non-overlapping channels vs all