What is a characteristic of a fault tolerant network?

• a network that protects confidential information from unauthorized access
• a network that can expand quickly to support new users and applications without impacting the performance of the service delivered to existing users
• a network that supports a mechanism for managing congestion and ensuring reliable delivery of content to all users
• a network that recovers quickly when a failure occurs and depends on redundancy to limit the impact of a failure
  

  Explanation: Fault tolerant networks limit the impact of a failure because the networks are built in a way that allows for quick recovery when such a failure occurs. These networks depend on multiple or redundant paths between the source and destination of a message. A scalable network can expand quickly to support new users and applications without impacting the performance of the service being delivered to existing users. Quality of service (QoS) is a mechanism for managing congestion and ensuring reliable delivery of content to all users.

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