Examtopics

コメント(17)

• 正解だと思う選択肢: A

  The questions says: "must be able to change the instance TYPE within the SAME instance FAMILY". Note that the question says TYPE, and not SIZE. According to https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ri-modifying.html, You can "Change the instance SIZE within the same instance family and generation" and "For example, you can modify a Reserved Instance from t2.small to t2.large because they're both in the same T2 family and generation. But you can't modify a Reserved Instance from T2 to M2 or from T2 to T3, because in both these examples, the target instance family and generation are not the same as the original Reserved Instance."

  In the above example: General Purpose Family, TYPE T, Generation 2, SIZE small (T2.large) (https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instance-types.html#AvailableInstanceTypes) Convert it to T2.large. This is same TYPE (T2), different SIZE (large). Hence, Standard would cover it. However, if I want to change T3.small, this would be a different TYPE (T3) within the same family (General Purpose).

  Hope this example helps claryifing.

  👍 9

  foreverlearner2022/12/21
• 正解だと思う選択肢: D

  Enables you to modify Availability Zone, scope, networking type, and instance size (within the same instance type) of your Reserved Instance. For more information, see Modifying Reserved Instances.

  Key Phrase is to Modify within the same instance Family, you can modify Standard Reserved Instances within the same Instance Family and Standard is most cost effective.

  👍 4

  Atown2022/11/12
• 正解だと思う選択肢: A

  https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ri-modifying.html#ri-modification-instancemove

  For Standard RI you cannot change family or generation but you can change size - "But you can't modify a Reserved Instance from T2 to M2 or from T2 to T3, because in both these examples, the target instance family and generation are not the same as the original Reserved Instance."

  Issue here is that they mention "TYPE" which is just another word for "generation within a family".

  https://docs.aws.amazon.com/whitepapers/latest/cost-optimization-reservation-models/standard-vs.-convertible-offering-classes.html

  We can clearly see here they use the word "TYPE" above for Standard RI. They are only interested into changing the size.

  👍 4

  squeeze_talus0y2023/01/14