wan topologies
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WIDE AREA NETWORK (WAN) TOPOLOGIES
COMPTIA NETWORK+ EXAM N10-006
TEST OBJECTIVE - 1.6
DIFFERENTIATE BETWEEN COMMON NETWORK TOPOLOGIES
WHAT IS A NETWORK TOPOLOGY?o Network topology is the way various components of a network (nodes, links, peripherals, etc.) are
arranged. Network topologies define the layout or structure of a network.
o A topology is either logical or physical.
o Logical topology is the way information flows between different components.
o Physical topology is the physical layout of nodes, workstations and cables in the network.
1. BUS TOPOLOGY• All devices are connected to a central cable, called the bus or backbone.
• Bus networks are relatively inexpensive and easy to install for small networks.
• Example: Peer-to-Peer Ethernet Network
2. STAR TOPOLOGY• A star topology has all nodes connect through a central device such as a hub or switch. Each
node has its own line and should one fail, it will not disrupt the entire topology.
• Example: Computer Workgroup
3. RING TOPOLOGY• The ring topology is similar to the star topology in a physical sense but it is actually set
around a ‘logical ring’ using a MAU (media access unit). A cable break in the ring network may bring down the entire network.
• Example(s): IBM Token Ring (Legacy), Fiber Optic Ring
4. MESH TOPOLOGY
• A mesh topology does not evidence a pattern when it comes to relaying data.
• Full-mesh topology requires each node to be interconnected with each other.
• Partial-mesh topology is when nodes connect with more than one network node via a point-to-point link.
• Example: The World Wide Web
5. TIERED TOPOLOGY
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Sites connected in star or ring formations which are interconnected at different levels. They are organized into layers to form hierarchical groupings.Example: Geographic Distributed Network
COMPTIA NETWORK+ PRACTICE QUESTION
What topology could result in a lack of all communication capabilities with a single connection break?
A. Full-Mesh
B. Partial-Mesh
C. Star
D. Ring
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