802.11a (1999) 802.11a speed
◦ 54 Mb/s & frequency of 5 GHz
Used by ◦ Government buildings◦ Older style networks
Ad hock modePeer to peer Networking
Do you need an AP (Access Point)?
Made for small groups of people
Able to share printers
Transfer files
How do think this would come in handy?
WEPWired Equivalent privacy
◦ One of the earliest encryption types.◦ Uses 40-bit encryption or 104 bit encryption
How secure is it?◦ No very secure -keeps the good people out-◦ Not true end to end encryption
WPAWI-FI Protection Access
◦ Battles WEP weakness by introducing TKIP
Temporary Key Integrity protocol (TKIP)◦ TKIP provides a new inscription key for every sent packet
EAP (extendible authentication protocol) This offered another way to authenticate other than MAC address (easy to sniff
out).
WPA2 IEEE 802.11i standard or Wi-Fi protected Access 2
Introduced AES (advanced encryption standard)o Encryption 128,192,256-bits
Provides stronger encryption and cleans up some holes in WPA
WPSWi-Fi Protected setup (has 2 ways to configure)
◦ A button on your wireless device◦ An 8 digit code that you input in on your device
Why?◦ Your average technician can program a wireless WAP in about five minutes. ◦ Your average end-user is scared to do this.
BUT◦ Security flaw!
Keep your Wireless LAN SafeTurn off SSID broadcast
Turn off wireless access to Router
MAC address filtering
Change default IP address
Change default SSID
Notebook & Desktop replacement components
Notebook (everything can be considered a notebook)◦ 10-17inch-Display screen◦ Integrated graphics cards◦ 2.5 Hard drive size◦ Built in screen ◦ Pointer device ◦ IBM Track point◦ Touch pad
Desktop replacement◦ Not light weight ◦ Dedicated graphics◦ 1-2 TB Hard drive◦ 16+ GB RAM
Netbook & Ultra book Netbook
◦ Light weight◦ Good battery life ◦ 9 inch screen's◦ Only for word processing
Ultra Book (2011)◦ Thin & light weight◦ Netbook + desktop replacement◦ Power of a desktop replacement that’s lightweight◦ Permanent components
PCMCIA Personal computer memory card international association
History◦ Company that sets standards for personal computer. They specifically set standards
on expansion cards.
Parallel PC Card◦ The older style laptops came with two 16-bit Slots. They came in three different
types.
Express card slots High- performance version of your parallel PC Card
Two types
Express Card /34 & express card / 54
Modern day card slot
Same thickness as a type ii slot