CCNA - Capitulo 17.1

CCNA - Capitulo 17.1

1. DEVICES IN A SMALL NETWORK

   • SMALL NETWORK APPLICATIONS AND PROTOCOLS
     • 2. COMMOM APPLICATIONS
       • NETWORK APPLICATIONS
         • APPLICATION LAYERS AND ARE ABLE TO COMMUNICATE DIRECTLY WITH LOWER LAYERS
         • EX : EMAIL CLIENTS AND WEB BROWSERS
       • APPLICATION LAYER SERVICES
         • EX :NETWORK PRINT SPOOLING
     • 1. COMMOM PROTOCOLS
       • SSH
         • ENCRYPT
       • TELNET
         • ALL PLAIN TEXT
       • ADMINISTRATORS COMMONLY REQUIRES ACESS
         • NETWORK DEVICES
           • ROUTER , SWITCH , ACCESS POINT , FIREWALL
           • MUST SUPPORT ACCESS SSH SERVER TO CLIENTS
         • SERVERS
           • WEB SERVER
             • WEB CLIENTS AND WEB SERVER EXCHANGE WEB TRAFFIC USING
               • HTTP
               • HTTPs SECURE
                 • HTTPS (TSL)
           • MUST SUPPORT ACCESS SSH SERVER TO CLIENTS
           • EMAIL SERVER
             • IMAP & POP3
               • RETRIEVE EMAIL
             • SMTP
               • SEND EMAILs
           • FTP SERVER
             • ALLOWS DOWNLOAD / UPLOAD BETWEEN CLIENT AND FTP SERVER
             • FTP SECURE
               • SFTP (TSL)
           • DHCP SERVER
             • ASSIGN
               • GATEWAY , SUBNETMASK
           • DNS SERVER
     • 3. VOICE AND VIDEO APPLICATIONS
       • CONSIDER WHEN SUPPORTING REAL TIME APPLICATIONS
         • INFRAESTRUCTURE
           • CABLING BE TESTED AND VALIDATED
         • VOICE OVER IP (VOIP)
           • VOIP DEVICES
             • CONVERT ANALOG TELEPHONE INTO DIGITAL IP PACKETS
             • EX : ATA - ANALOG TELEPHONE ADPTER
           • LESS EXPENSIVE THAN IP TELEPHONE SOLUTION
         • IP TELEPHONY
           • IP PHONE PERFORMS VOICE TO IP CONVERSION
             • DEDICATED SERVER
               • CALL CONTROL AND SIGNALING
             • MANY VENDOR PROVIDE SMALL BUSINES
               • EX : Cisco® Business Edition 4000 (BE4000) - PABX DIGITAL
         • REAL-TIME APPLICATIONS
           • THE NETWORK MUST SUPPORT
             • QoS
             • REAL TIME TRANSPORT PROTOCOL (RTP)
               • TRANSPORT VOZ
               • HIGH PORTS
                 • EX : 10000 - 20000
             • REAL TIME TRANSPORT CONTROL PROTOCOL (RTCP)
               • MONITORS VOICE QUALITY
                 • PACKET LOSS
                 • JITTER
                 • LATENCY
                 • QUALITY (BASE FOR MOS)
           • SIP (SESSION INITIATION PROTOCOL)
             • CREATES, CONTROLS, AND ENDS CALLS.
             • COMMANDS
             • BESEAD HTTP
           • PORTS
             • 5060 / 5061
   • SCALE TO LARGER NETWORKS
     • SMALL NETWORK GROWTH
       • TO SCALE A NETWORL ELEMENTS
         • NETWORK DOCUMENTATION
           • PHYSICAL AND LOGICAL TOPOLOGY
         • DEVICE INVENTORY
           • LIST OF DEVICES THAT USE COMPRISE THE NETWORK
         • BUDGET
           • IT BUDGET
         • TRAFFIC ANALYSIS
           • PROTOCOLS , APPLICATIONS, ASERCIES SHOULD BE DOCUMENTED
     • PROTOCOL ANALYSIS
       • NETWORK TRAFFIC
         • CAPTURE TRAFFIC DURING
           • DIFFERENT NETWORK SEGMENTS AND DEVICES
           • PEAK UTILIZATION TIMES TO GET
         • TOOLS
           • WIRESHARK
     • EMPLOYEE NETWORK UTILIZATION
       • WINDOWS HOST
         • TOOLS CAN BE USED FOLLOWING \
           • NON NETWORK & NETWORK APPLICATIONS
           • CPU , RAM , DRIVE & OS UTILIZATION
         • TOOLS
           • TASK MANAGER
           • EVENT VIEWER
           • DATA USAGE
             • SETTINGS > NETWORK & INTERNET > DATA USAGE > NETWORK INTERFACE (FROM THE LAST 30 DAYS). '