Infrastructure 2.7 Flashcards
Basics of Networking Comms
Packet Transmission
One computer forwards information from one to another
Like a pill capsule dedlivers all of the data inside to the other.,
D.N.S.
Domain Name Server
resolve resources into IP address/Binary
Uses 48-Bit Mac Values
translates Web names into IP language
U.R.L.
Uniform Resource Locator
when a web browser requests a record from a web server, identifies and access an item.
Basic Protocols
Http/s, Pop3, IMAP, SMTP
HTTP/S
Used to provide web content to browsers, uses port 80,
HTTPS uses SSL (Secure Sockets Layer) for encrypted transfers. Port 80
Device Addresses
IP, MAC
MAC Address
48-Bit Address, hardware address hard coded into network card by manufacturer
IP Adress
32-Bit Binary address for IPv4
128-Bit for IPv6
IMAP
Internet Message Access Protocol
App protocol that allows the client to access email messages stored in a mailbox on a remote server.
Messages persist on server after the client has D/L them
SMTP
Simple Mail Traasnfer Protocol
Used to send mail between hots on the internet.
POP/3
Post Office Protocol
means for client to access email messages stored in a mailbox on a remote server.
(*Usually deletes messages once the client has downloaded them)
Devices
Modem, Router, Switch, Access Point, Firewall
Internet Service Types
Switch, Access Point, Router, Modem, Firewall
Switch
Connects 4-8 computers together in an Ethernet LAN using RJ-45 network ports and twisted-pair cabling
Access Point
Creates Wi-Fi wireless network (WLAN) between computers and mobile devices equipped with suitable adapters and also switches communications between wired and wireless networks.
Modem
Modulation/Demodulation
Converts digital signals from computer to analog signals over phones lines.
Router
Forwards packets (capsules of info) between the local network and the internet.
Allow data to take multiple pathways to reach a destination
Fiber Optic
Faster Internet over long distances,
Cable Internet
