200-301 · Question #1159
What are two disadvantages of a full-mesh topology? (Choose two.)
The correct answer is A. It requires complex configuration. D. It has a high implementation cost.. A full-mesh topology's primary drawbacks are the significant configuration complexity and the high cost associated with establishing numerous direct connections.
Question
Options
- AIt requires complex configuration.
- BIt needs a high MTU between sites.
- CIt works only with BGP between sites.
- DIt has a high implementation cost.
- EIt must have point-to-point communication.
How the community answered
(26 responses)- A96% (25)
- B4% (1)
Why each option
A full-mesh topology's primary drawbacks are the significant configuration complexity and the high cost associated with establishing numerous direct connections.
In a full-mesh topology, every node has a direct connection to every other node, leading to a large number of connections (n*(n-1)/2) and thus intricate configuration requirements as the number of nodes increases.
While MTU is a networking consideration, a full-mesh topology does not inherently demand a *high* MTU; MTU size is typically determined by the network path and underlying technology, not the mesh structure itself.
A full-mesh topology can use various routing protocols, including OSPF, EIGRP, or static routes, and is not exclusively limited to BGP between sites.
The necessity for a dedicated direct link between every pair of nodes in a full-mesh topology results in substantial hardware and cabling costs, making implementation expensive.
While a full-mesh topology *consists* of point-to-point communications, this is a characteristic of its design, not a disadvantage; the disadvantage stems from the *number* of required point-to-point links.
Concept tested: Full-mesh network topology characteristics and disadvantages
Source: https://learn.microsoft.com/en-us/azure/virtual-wan/virtual-wan-about
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