4.9 Communication & Networking

4.9 Communication & Networking

1. Networking

   • 4.5.6 Bit patterns, images and sound representation
   • Client-server model
     • 4.5.1 Number Systems
     • Web socket protocol
     • Web CRUD applications & REST
     • JSON vs. XML
     • Thick vs. thin clients
   • Internet security
     • Firewall
       • Packet filtering
       • Proxy server
       • Stateful inspection
     • Symmetric vs. Asymmetric encryption
       • Key exchange (private/public key)
     • Digital ceritifcates & digital signatures
     • Vulnerabilities exploited by malware
       • Worms vs. Trojans vs. viruses
       • improved code quality, monitoring & protection
   • How the Internet works
     • Structure of Internet
     • Role of packet switching & routers
     • packet components
     • Router vs. gateway
     • How is routing achieved
     • URL, FQDN, domain name, IP address
     • Domains organisation
       • domain service
       • DNS system
     • Internet registries service
   • TCP/IP
     • Network layer
     • MAC addresses role
     • Transport Layer
     • IP address structure
       • Network identifier
       • Host identifier
     • use of well-known ports & client ports
       • Differences
     • Socket role in TCP/IP stack
     • Standard application layer protocols
       • FTP, HTTP, HTTPS, POP3, SMTP, SSH
       • FTP client & server software for file transfer
         • Anonymous vs. non-anonymous access
     • Application layer
     • Link layer
     • Subnet masking
       • Subnets
     • IP standards
       • IPv4
       • IPv6
     • Public vs. private IP addresses
       • routable vs. non-routable address
     • DHCP (Dynamic Host Configuration Protocol) system
     • NAT (Network Address Translation)
     • Port forwarding
   • Topology
     • Physical star vs. Logical bus
     • star vs. bus topology
   • Peer-to-peer vs. client-server
   • Wireless networking
     • CSMA/CA wireless protocol with & without RTS/CTS
     • How is security maintained
       • WPA (WiFi Protected Access)/ WPA2
       • SSID (Service Set Identifier) broadcast disabled
       • MAC (Media Access Control) address whitelist
     • Wireless access point
     • Wireless network adapter
     • purpose of WIFI
     • Purpose of SSID

2. Communication

   • 4.5.7 Encryption
   • Bit rate
   • Synchronous vs. asynchronous data transmission
     • Start, stop bits
   • Serial vs. parallel transmission
   • Baud rate
   • Bandwidth
   • Latency
   • Protocol
   • Bit rate vs. baud rate
   • bit rate vs. bandwidth