entity : model or model relationship
"the cloud" connection of computer that connects point a to point b
ap access point
router: a small firewall
port: has a small IP address (standardized and not)
IP: what dials you into a computer (specific)
NONE OF US ARE ON THE INTERNET. Only the ROUTER has the "internet". The router fetches the information for us. We use the "intranet"
DNSDOMANIN NAME SYSTEM (for internet) global phone book. Updates all the time. Router has "mini-version" that updates sooner. What changes an internet address to an IP address
mDNS: (for lan) program that translates name to IP address
hostname
-
ping(ICMP)ping -c 1 www.google.comin the terminal- tests that the system is receiving information on the other end/ determine if we have a connection
-
IFCONFIG: interface configure - eternet port, bluetooth, wifi- will get back a list of devices; *eth() *wlan *0..(ethernet ones) *1...(wifi ones)
nc name/ip port nc -l port
a listener or observer accepts connections
- browser- client- we tell where to go
- phone- listener- waits to receive call/ also client- can place a call
- micro-framework
- web app attrtibutes
- runs off the browser instead of the data base
- can handle more than one user
httpprotocolwww.google.comdomainsearchpath or route!9=WDIparameters- used to pass information back and forth (search parameters or query parameters)
get describes url content that doesn't change- browser will give you the same results
post server needs to perform some action with the data
delete
update
- What problem am I solving? (discret, single thing only) How do I know it worked?
- What do I expect?
- Where am I?
- Which files are there?
- WHich file am I running? Which Class?