IP ADDRESSING Flashcards
DHCP Process
Works on local subnet router enabled with IP helper request. Client broadcasts to UDP 67 to DHCP server then they offer to client using 68 to broadcast UDP. Client chooses first offer received. Then DHCP acknowledges
APIPA
Link Local its automatic allowing to communicate in LAN but not WAN 169.254.0.1 - 169.254.255.254
Using IP ADDRESSING
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VPN (SECURE SOCKETS)
Uses SSL/TLS (TCP 443)
Client to Site VPN
Passes through VPN concentrator as encrypted data
LAN
Group of devices on same network
Virtual LAN (VLAN)
Using a single network then logically seperating it example “Guest Wifi”
NAT
Translates on IP to another example “ Subnet local IP” Then converts to “WAN IP”
Internet Connection Types
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Cable Modem
DOCSIS (data over cable service interface connection) , Considered High speed
DSL Modem
ADSL(Asymetric digital subscriber line) Distance from central office is problem for speed
Dialup
Uses telephone line 56k/bits SLOW
Fiber
Highspeed connection
Satellite
50 DOWNLOAD 3 UPLOAD , CONNECTS VERY REMOTE, HIGH LATENCY
ISDN
BRI - Basic rate interface, PRI-primary rate interface
Cellular
Voice and Data, Tether - turns phone into router, Mobile hotspot using phone internet for others
Line of Site
attennas communicate simultaneously
Network Types
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LAN
Local Area Network same room, nearby
WAN
Wide area network, far away
PAN
Personal area network, bluetooth, IR (Tv REMOTE) , NFC stickers
MAN
Metropolitian Area Network, A network in the city/area
WMN
Wireless Mesh Network, All devices connect together / Zigbee, Zwave
Network Tools
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Cable Crimpers
Pinches connectors to cable, Coaxial, Twisted Pair, Fiber
Multimeter
AC (Wall Outlet) DC(PC,Laptop ) Checks these
Tone Generator
Allows tracking of wire using tone
Cable tester
Checks if pins are correct.
Loop back plug
Goes out of interface then loops back
Punch-down tool
Punch a wire into a punch down block 66/110 blocks
