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A+ - 901 (Microprocessors (64 bit processing (X86, X64, X86-64), Parallel…
A+ - 901
Microprocessors
Clock Multipliers
64 bit processing
X86
X64
X86-64
Virtualization Support
Parallel Execution
Pipelining
stages
fetch
decode
execute
write
Multicore processing
Integrated Memory Controller (IMC)
Integrated Graphic Processing Unints
Security
NX Bit
protegge sezioni della memoria
nomi
Intel
xd bit
ARM
XN
execute never
AMD
enhancec virus protection
Comptia
disable execute bit
Selecting and installing CPUs
Display Technologies
How Monitors Work
Pixel
LCD
Filtri RGB
CCFL - Luce/Elettricità
CCFL
Cold Cathode Fluorescent Lamp
LED BACKLIGHTS TO LIGHT
no elettricità
inverter
converte DC->AC
Problemi
Black Screen
Bad Inverter
Plasma and DLP Displays
VGA and DVI
Other Video Connections
Graphics Cards
Projectors
Using Multiple Monitors
Troubleshooting Video
Networking
CH. 20 - Essentials of Networking
Structured Cabling
Patch Cables
Fiber Optic and Coaxial Cabling
Moving data over a network
frames
ones and zeros
Network Card Interface - NIC
MAC address
manufacturer
12 valori esadecimali
verificato alla ricezione del pacchetto
hub
repeater - fa copie e le ributta nelle porte
every pc get a copy
problemi
traffico
dumb
composed by packets
broadcast domain
switch
#
very smart
broadcast
come l'hub!
full bandwidth
Networking Tools - 901 - 2.9 - 889
Cable Tester
Micro Scanner
Tone Generator
Locate cables
Intro to Networking
Servers
Apache
IIS
Client
browser
Firefoz
IE
Chrome
NIC
Network Interface Controller
Sia il client ch eil sevrer
Local Area Networking
78 - Dynamic IP Addressing
901 2.3
DHCP
When DHCP fails
APIPA
Automatic Private Internet Protocol Addressing
169.254
Alternate Configuration
Dynamic Host Configuration Protocol
IPCONFIG
RELEASE
perde l'indirizzo IP
RENEW
richiede un altro indirizzo IP
DHCP Server
gives IP addresses
NAT
Funzione del Router
NAT table: traduce gli indirizzi
80 - Special IP Addresses
broadcast
255.255.255.255
localhost/loopback
127.0.0.1
private ip addresses
10.
172.16 to 172.31
192.168.X
NETWORK IDS and Subnet Masks
Subnet Mask
Default Gateway
default:1
81 - PING e IPCONFIG
PING
IPCONFIG
TCP/IP settings
renew
release
nslookup
info by DNS Server
tracert/traceroute
82 - TCP, UDP, ICMP
TCP
Transmission Control Protocol
UDP
User Datagram Protocol
ICMP
used by ping
84 - Working with Connections
netstat
tcpview
netstat in real time
Wireless Networking
The Internet
Hard Drive Technologies
Magnetic Hard Drives
HDD - Hard Disk Drives
Components
Platters
Spindle (Rotational) Speed
RPM
Solid State Drives
technology
Semiconductors
Flash
No moving parts
Desktop
PATA
Molex connector
problemi
no hot swap
ribbon cables
lunghezza limitata dei cavi
SATA
eSATA
USB
ATA
Advanced Technology Attachment
IDE
ATA3
SMART
Self Monitoring and Reporting Technology
tracks errors and error conditions
Hybrid Hard Drives
ATA
Parallel PATA
Serial SATA