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Compare three categories of network components, Compare between logical…
Compare three categories of network components
Devices
Laptop
Servers
Router
Phone
Hub
Media
Coaxial cable
Fiber Optic Cable
Twisted-pair cable
Services
DNS Service
HTTP web server Service
Process service
Software service
Compare between logical and physical design in network diagram
Physical Topology
actual route concerned with transmission
refers to the physical connections and identifies how end devices and infrastructure devices are interconnected
Logical Topology
refers to the way a network transfers frames from one node to the next
Data path followed of the network
high level representation of data flow
Compare between LAN and WAN topologies
WAN Topologies
Wide area network
can be private or public
slow than LAN speed
propagation delay is longer time
Uses PSTN or satellite link as transmission or communication medium
Point-to-Point
Consists of a permanent link between two endpoints
Hub and Spoke
star topology in which a central site interconnects branch sites using point-to-point links.
Mesh
high availability
requires that every end system be interconnected to every other system.
LAN Topologies
Local area network
Ownership private
High speed
Propagation delay is short time
Coaxial and UTP cable used is medium transmissions
Star
- End devices are connected to a central intermediate device
Extended Star
- Additional Ethernet switches interconnect other star topologies
Bus
- All end systems are chained to each other and terminated in some form on each end.
Ring
- End systems are connected to their respective neighbors, forming a ring
-Ring does not need to be terminated