WANs and LANs

Descripción

An incomplete mind map for the Networking topic
Josh Watkins
Mapa Mental por Josh Watkins, actualizado hace más de 1 año
Josh Watkins
Creado por Josh Watkins hace más de 7 años
71
6

Resumen del Recurso

WANs and LANs
  1. LANs
    1. Advantages
      1. Enables Digital Communication
        1. Enables Sharing of Information
          1. Enables sharing of peripherals
            1. Enables distributed processing
              1. Multiple computers simultaneosly running the same program
              2. Enables multiple computers to be updated from one central point
              3. Disadvantages
                1. Requires some expertise to install and maintain
                  1. Costly
                  2. security issues
                    1. Viruses
                      1. Hackers
                        1. Spyware
                      2. Hardware Needed
                        1. Multiple computers/nodes
                          1. All with a Network Interface Card
                          2. Data Transfer Media
                            1. Wires
                              1. Wireless Technology
                              2. Hub or Switch
                                1. Router
                                2. Types of Network
                                  1. Peer-to-Peer
                                    1. All nodes have the same status
                                      1. Data transfer may be slow
                                        1. Data collisions
                                          1. Shared process power
                                          2. Only suitable for low-traffic networks
                                          3. Client-Server
                                            1. One computer is the server
                                              1. This computer needs to be high spec
                                                1. Large networks may have multiple servers
                                                  1. Clients must sign in so their identification is known
                                                    1. Jobs
                                                      1. To manage traffic on a network
                                                        1. To give security to users
                                                          1. To offer services like software and data to the clients
                                                      2. Topologies
                                                        1. Bus
                                                          1. Cheap
                                                            1. If the main cable breaks the whole network may suffer
                                                            2. Ring
                                                              1. No data collisions
                                                                1. If the main cable breaks the whole network may suffer
                                                                2. Star
                                                                  1. Very reliable
                                                                    1. Very expensive
                                                              2. WANs
                                                                1. Internet Protocols
                                                                  1. Addressing Protocols
                                                                    1. Data Transfer Protocols
                                                                      1. A group of protocols that underlies the internet
                                                                        1. There are many other specific protocols for particular tasks
                                                                        2. Every node on a network has an IP
                                                                          1. 'Internet Protocol' - a unique sequence of four octets
                                                                            1. This may not remain the same when it rejoins a network
                                                                            2. Each device has a MAC address hardwired into it
                                                                              1. 'Media Access Control' - 12-digit hexadecimal number
                                                                                1. Cannot be changed
                                                                                2. Packets
                                                                                  1. When data is sent across a network it is split into packets
                                                                                    1. Packet structure
                                                                                      1. Packet Address
                                                                                        1. The data is set from router to router until it reaches its destination
                                                                                      2. Security
                                                                                        1. Access Levels
                                                                                          1. Passwords
                                                                                            1. Encryption
                                                                                            2. Policies
                                                                                              1. Acceptable use policies outline how people should behave when using a network
                                                                                                1. Sanctions/punishments for those who don't use them properly
                                                                                                2. Disaster Recovery
                                                                                                  1. RAID
                                                                                                    1. backup
                                                                                                    2. Surge protector
                                                                                                      1. reduces likelihood of overloading in the event of a power surge
                                                                                                      2. Back up generator
                                                                                                        1. Security
                                                                                                          1. Failover
                                                                                                            1. Making a system unbreakable
                                                                                                            2. Regular Archiving
                                                                                                          2. By Josh Watkins
                                                                                                            Mostrar resumen completo Ocultar resumen completo

                                                                                                            Similar

                                                                                                            CCNA Answers – CCNA Exam
                                                                                                            Abdul Demir
                                                                                                            Computing Hardware - CPU and Memory
                                                                                                            ollietablet123
                                                                                                            A level Computing Quiz
                                                                                                            Zacchaeus Snape
                                                                                                            LAN and WAN
                                                                                                            Nathan Roberts
                                                                                                            Types and Components of Computer Systems
                                                                                                            Jess Peason
                                                                                                            Input Devices
                                                                                                            Jess Peason
                                                                                                            SFDC App Builder 2
                                                                                                            Parker Webb-Mitchell
                                                                                                            Data Types
                                                                                                            Jacob Sedore
                                                                                                            Intake7 BIM L1
                                                                                                            Stanley Chia
                                                                                                            Improve your Revision with Online Flashcards
                                                                                                            daniel.praecox
                                                                                                            Output Devices
                                                                                                            Jess Peason