CCNA 2 - Capitulo 12

CCNA 2 - Capitulo 12

1. WIRELESS

   • FOUR MAIN TYPES
     • 1 - WLAN ( 802.11)
       • 90 METERS - 300 FEET
       • STANDARD
         • 802.11
           • SPEED TO 2Mbps
           • ONLY RF 2GHZ
         • 802.11a
           • SPEED TO 54MB ; SMALL AREA ; LESS PENETRATING STRURCURES
           • NOT INTEROPERABLE
             • BUILDING STRUCTURES
             • BE & G
           • ONLY RF 5 GHZ
         • 802.11b
           • SPEED TO 11 Mbps
           • BETTER BUILDING STRUCTURES
           • BACKWARDS
             • 802.1b
           • ONLY RF 2GHZ
           • LONGER RANGE THAN 802.11A
         • 802.11g
           • SPEED TO 54 Mbps
           • BACKWARDS
             • 802.1b WITH REDUCE BANDWIDTH
         • 802.11n
           • DATA RANGE FROM 150 Mbps TO 600 Mbps -
             • DISTANCE RANGE : 70M (230 FET)
           • BACKWARDS
             • 802.1A,B,G WITH REDUCE BANDWIDTH
           • AP AND WIRELESS CLIENTES REQUIRES
             • MIMO
           • RF 2GHZ E 5GHZ
         • 802.11AC
           • ONLY 5GHZ
           • SUPPORTED
             • EIGHT ANTENNAS
           • BACKWARDS
             • 802.1A , N
           • DATA RANGE FROM 450 Mbps to 1.3 Gbps
             • USING MIMO TECHNOLOGY
               • UP TO EIGHT ANTENNAS CAN BE SUPPORTED
         • 802.11AX - HIGH EFFICIENT WIRELESS ( HEW )
           • PROVIDES
             • POWER EFFICIENCY , HIGHER DATA , INCREASED CAPACITY
             • HANDLES MANY CONNECTED DEVICES
           • RF 2GHZ E 5GHZ
           • WI-FI GENARATION 6
       • MEDIUM SIZED NETWORK
       • ONE ANTENNA TRANSMIT AND RECEIVE WIRELESS SIGNALS
         • ON THE RADIO FREQUENCY 2.4 GHZ OR 5GHZ
       • NEWER STANDARD THAT TRANSMIT AND RECEIVE HIGHER SPEED REQUIRES ACCESS POINTS AND WIRELESS CLIENT HAVE
         • MIMO (MULTIPLE INPUT AND MULTIPLE OUTUP)
           • MULTIPLE ANTENNAS
             • BOTH TRANSMITTER AND RECEIVER
             • 4 ANTENNAS - MAXIMUM
     • 4 - WPAN ( 802.15)
       • DEVICES BLUETOTH ,
         • 2.4GHZ
       • DEVICES ZIG BEE
         • 2.4GHZ
       • LOW POWERED
       • SHORT RANGE
         • 6 TO 9 METERS
     • 3 - WMAN
       • LARGER GEOGRAPHIC
         • SPECIFIC FREQUENCIES
       • METROPOLITAN CITY
     • 2 - WWAN
       • EXTENSIVE GEOGRAPHIC
       • LICENSED FREQUENCIES
       • NATIONAL OR GLOBAL
       • EX: SKY
   • IEEE
   • WIRELESS
     • INTRODUCTION TO WIRELESS
       • BENEFITS OF WIRELESS
         • COMMONLY USED INHOME , OFFICE , CAMPUS
           • PEOPLE CONNECT USING COMPUTERS , TABLETS , SMARTPONES
         • MAKES MOBILITY IS POSSIBLE
         • COST SAVING
         • CAN ADAPT TO RAPIDLY CHANGING NEEDS AND TECHNOLOGIES
     • WIRELESS NETWORKS ARE BASED ON THE IEEE STANDARDS