IPv4 ADDRESSes built the internet. But they ran out of combos in late 90s NAT "network address translation" fixed this You used to have to be manually assigned a network ID via your internet provider Downside of this was your network ID was public to hackers = therefore FIREWALL was born . If someone got past your " Firewall " all of the PCs on your WAN & LAN were vulnerable **NAT fixed this too** NAT router/gateway will now give private IP addresses to all PCs on a LAN . Your private IP ADDRESS goes through NAT gateway & the gateway camouflages your address as its own LAN address (Kinda slows things down unfortunately) . .
INSTALL O.S. ONTO A NEW DRIVE. THAT'S HOW YOU PARTITION & FORMAT a new drive Example: Windows costs money. "ubuntu" on Linux is open source **PARTITIONING & FORMATTING must happen before you use any new mass storage drive!** . . . . . . . . . RAID LEVELS / FILE STORAGE: RAID 0 (striping) = 2 drives sharing bits of data from a big file. SPEEDS THINGS UP . RAID 1 (mirroring) = 2 drives share identical bits via mirroring each other on both drives. Protects against losing everything. Necessary? It's REDUNDANT. Slows things down . RAID 5 (striping w/parity) = uses 3 drives. First two drives save the old RAID 0 way but new 3rd drive saves a weird "math parity." clones files via binary math . RAID 6 = uses 4 drives. First two drives save the old RAID 0 way but new drives make "math parity" clones of file (via binary math) **Two drives can fail and everything will still be saved** . RAID 10 (striping mirrors) = 4 drives with 2 ...
PSU block / POWER SUPPLIES . . . . . Big block that gives your PC power *they're basically step down transformers Converts AC power to DC power Like puzzle pieces they all fit perfect . . . . . 2 piece ATX POWER CONVERTER (multi coloured wires - indicate YELLOW 12v , RED 5v , and ORANGE 3.3volt ) ATX12V is typical power for CPU . . . . . . . . SOME OLD ASS COMPUTERS USED "MOLEX" TINY MINI CONNECTOR for floppy drives . . . . . . . . Once again - small black SATA CONNECTORS . . . . . . . PCIE connectors are for video cards . . . . . . . huge MODULAR CONNECTOR like a big adaptor - so you don't have cables going everywhere Purists say you should use soldered power supply *not the big MODULAR CONNECTOR . . . . . . . 80PLUS RATINGS GUIDE (power efficiency rating) . . . . . . . HEAT SINK & HEAT DISSIPATORS - COOLING BAR FINS + FANS for air flow . . . . . . . When systems OVERHEAT they REBOOT BIGGER FANS *LESS NOISY because they TURN SLOWER (liqui...
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