Wireless Networks

Question 1

ad-hoc networks

Answer 1

nodes all speak directly to each other, a mixture of wireless, mobile, and fixed nodes

Question 2

what are some practical applications for ad-hoc networks?

Answer 2

sharing stuff with smartphones, industrial warehouse where individual pieces only need to speak w/ each other, disaster situations when infrastructure is down

Question 3

WLANS

Answer 3

wireless LANs- _>1 WAP acts a bridge between the wired and wireless network

Question 4

Mesh Networks

Answer 4

most nodes are wireless and connections and routes are extremely dynamic as the network builds and changes

Question 5

channels

Answer 5

individual, smaller sections of the overall frequency band used by wireless networks

Question 6

WEP

Answer 6

wired equivalent privacy- an encryption tech that provides a very low level of privacy

Question 7

WPA

Answer 7

Wi-Fi protected access- uses a 128-bit key by default

Question 8

WPA2

Answer 8

most common encryption algorithm, uses a 256-bit key

Question 9

MAC filtering

Answer 9

access points config. to only allow connections from a specific set of MACs belonging to trusted devices