wireless multimedia
TRANSCRIPT
What is Multimedia ?
Multimedia
What is wireless ?
Methods of data transfer
• Wireless communication is the transfer of information between two or more points that are not connected by an electrical conductor and doesn't has a cables between them.
• The wireless technologies use radio waves to transfer the data.
What is the difference between Bluetooth and Wireless?
• Both Wi-Fi and Bluetooth are wireless technologies that transmit data by using radio frequency (RF) signal, but the main differences between these two are range, speed, and cost
Advantages and Disadvantages of wireless
Advantages
ConvenienceMobilityProductivity
Deployment Expandability Cost
Disadvantages
SecuritySpeed
Reliability Range
Wireless Security
Wireless Security
WEP
WPA
WPA2
Wired Equivalent Privacy
Wi-Fi Protected Access
Wi-Fi Protected Access 2
WEPThe original encryption protocol developed for wireless networks. As its name implies, WEP was designed to provide the same level of security as wired networks. However, WEP has many well-known security flaws, is difficult to configure, and is easily broken.
WPAIntroduced as an interim security enhancement over WEP while the 802.11i wireless security standard was being developed. Most current WPA implementations use a preshared key (PSK), commonly referred to as WPA Personal, and the Temporal Key Integrity Protocol (TKIP, pronounced tee-kip) for encryption. WPA Enterprise uses an authentication server to generate keys or certificates.
WPA 2Based on the 802.11i wireless security standard, which was finalized in 2004. The most significant enhancement to WPA2 over WPA is the use of the Advanced Encryption Standard (AES) for encryption. The security provided by AES is sufficient (and approved) for use by the U.S. government to encrypt information classified as top secret — it’s probably good enough to protect your secrets as well!
How does wireless work?
Types Of wireless adapter cards
Asus_WL138gEIntel-PROSet-USB wireless
TLWN353GD
Device 1 Device 2
Wireless DriverWireless Driver
20m
Internet
Device 1 Device 2
Wireless DriverWireless Driver
Open
Internet
Device 1 Device 2
Wireless DriverWireless Driver
Sender ReceiverRequestHi my name is device 1 and you?
Internet
Device 1 Device 2
Wireless DriverWireless Driver
Sender ReceiverAcceptHi I am device 2 and my password :123
Internet
Device 1 Device 2
Wireless DriverWireless Driver
Sender ReceiverTesting connection
Internet
Device 1 Device 2
Wireless DriverWireless Driver
Sender Receiver
Internet
Now what is wireless multimedia?It’s a process use wireless method to transfer multimedia data (text – picture -video – sound) from point to another point.
Questions ?