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April 15, 2017
Cloud+ Outline - Module 3
April 15, 2017
Module 3: Network Structure and ConfigurationUnit OverviewNetwork TopologiesNetwork TypesNetwork OptimizationNetwork Ports and ProtocolsRouting and Switching Network TopologiesBus TopologyRing TopologyMesh TopologyStar TopologyTree Topology Multiple LANs make a WAN Bus Topology
- Connected in line – any break in line, the network goes down.
- Must be terminated on ends.
- Connected in a circular pattern, any break in line, the network goes down.
- Every computer connected to every computer
- Redundancy, no one computer takes the computer down.
- Negative is each computer requires as many NICs as computers.
- Every computer connects to a central node
- No one computer takes the computer down.
- If hub goes down, all network connectivity stops.
- Hierarchical structure
- Central node for each hub, star connected to a star connected to a star.
- Private network
- Created by a company to host internal resources
- Isolated network
- Protected by firewalls or proxies
- Global networks of interconnected network devices
- Not controlled by any organization
- Networks relying on protocols to send information
- Commercial and private organization by an IP
- Extension of an intranet
- Allows the organization that created the extranet to share resources outside the intranet
- Owned by the organization that created it
- Distribute requests across devices
- Used to lighten the load
- Bandwidth is the speed of the network
- 10 MB/sec10 MB is the bandwidth
- 100 MB/sec100 MB is the bandwidth
- Is the time delay while data is being sent (in ms = milliseconds)
- The higher the latency, the slower the network
- Shrinking a file
- ZIP and RAR are common file extension types
- Allows for a storage of frequently accessed data
- Servers typically have a cache that allows a temp storage of internet files for quick recall
- Allows a network to share one IP in the internet
- Provides many internal devices mapping of a single IP address
- Virtual LANs to create a logical separation on a physical network
- VLANs are usually created in a switch
- Tables that are stored on the router
- Used to route network packets
- Contains information about the internal network and the next hop