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Exam AWS-SysOps topic 1 question 389 discussion

Exam question from Amazon's AWS-SysOps
Question #: 389
Topic #: 1
[All AWS-SysOps Questions]

In EC2, what happens to the data in an instance store if an instance reboots (either intentionally or unintentionally)?

  • A. Data is partially present in the instance store.
  • B. Data persists in the instance store.
  • C. Data is deleted from the instance store for security reasons.
  • D. Data in the instance store will be lost.
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Suggested Answer: B 🗳️
The data in an instance store persists only during the lifetime of its associated instance. If an in-stance reboots (intentionally or unintentionally), data in the instance store persists. However, data on instance store volumes is lost under the following circumstances.

Failure of an underlying drive -

The instance is stopped -

Terminating an instance -
Reference:
http://docs.amazonwebservices.com/AWSEC2/latest/UserGuide/InstanceStorage.html

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albert_kuo
10 months, 1 week ago
Selected Answer: D
Whether the reboot is intentional (such as a manual reboot or a system reboot initiated by the operating system) or unintentional (due to a hardware failure or other issue), the data in the instance store will not persist across reboots. When the instance reboots, the instance store is reset to its initial state, and any data stored in it is effectively lost. It's important to note that instance store volumes are ideal for temporary data or scratch space, but if you need data persistence, it is recommended to use Amazon EBS (Elastic Block Store) volumes as they provide durable storage that persists independently of the instance lifecycle.
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albert_kuo
8 months, 3 weeks ago
correct to B
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albert_kuo
8 months, 3 weeks ago
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/InstanceStorage.html
upvoted 1 times
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karthisena
2 years, 6 months ago
Explanation: The data in an instance store persists only during the lifetime of its associated instance. If an instance reboots (intentionally or unintentionally), data in the instance store persists. However, data on instance store volumes is lost under the following circumstances. Failure of an underlying drive Stopping an Amazon EBS-backed instance Terminating an instance
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awscertified
2 years, 6 months ago
B. Data persists in the instance store.
upvoted 3 times
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