CS50 Security/Internet/Multimedia Videos + Khan Academy Units 2 & 7
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104 Terms
Computer Network
any group of interconnected computing devices capable of sending/receiving data
LAN
local area network
WAN
wide area network
DCN
data center network
Copper/twisted pair/Ethernet cables
send data through a network by transmitting pulses of electricity to represent binary
Fiber-optic cables
sends pulses of light to represent binary - transmit more data per second, more expensive
Line coding
turning binary data into a time-based signal
Bit rate
number of bits of data sent each second - bits per second, megabits per second, etc
Bandwidth
maximum bit rate per second
Broadband Internet
connection with minimum bandwidth of 256 kilobits per second (kbps)
Latency
how late bits arrive
Internet speed
bandwidth + latency
IP Addresses
Internet Protocol
IPV4
first ip used on the internet
IPV6
backwards-compatible IP successor with more possibilities - stored in hexadecimal base 16 - 8 total numbers between :
