With virtualization being applied in many parts of the network every physical link is likely to carry one or more virtual links, but what is a drawback in cases like this?

Question

Options

• Aunneeded tunneling
• Bfate sharing
• Cbandwidth utilization
• Dserialization delay

• A
  3% (1)
• B
  95% (36)
• D
  3% (1)

Explanation

Fate sharing occurs when multiple virtual links are multiplexed over a single physical link. If that physical link fails, every virtual link riding on top of it fails simultaneously - they all share the same fate. This is a critical drawback of network virtualization: a single physical failure can cascade and take down many logical/virtual connections at once. While tunneling (A) and serialization delay (D) are real networking concerns, they are not specific drawbacks of carrying multiple virtual links on one physical link. Bandwidth utilization (C) can actually be a benefit of virtualization through more efficient sharing.

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