Storage Flashcards

1
Q

What is an S3 bucket?

A

A container for objects, with a globally unique name.

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2
Q

What is the “key” of an S3 object?

A

The full path to the object within the bucket.

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3
Q

What is the maximum size of an S3 object?

A

5 TB.

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4
Q

When is “Multi-part upload” required?

A

When uploading files larger than 5 GB.

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5
Q

What is the purpose of an S3 Bucket Policy?

A

To manage access permissions to the bucket.

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6
Q

What does the “Block Public Access” feature do?

A

Prevents public access to buckets and objects.

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7
Q

What is versioning in S3?

A

Manages different versions of an object.

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8
Q

How many main types of replication are there in S3?

A

2: Cross-Region Replication (CRR) and Same-Region Replication (SRR).

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9
Q

Which S3 storage class is suitable for infrequently accessed data that requires rapid access when needed?

A

S3 Standard-IA.

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10
Q

What is S3 Glacier Deep Archive used for?

A

Long-term data archiving at the lowest cost.

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11
Q

What is the key feature of S3 Intelligent-Tiering?

A

Automatically moves objects between access tiers based on usage patterns.

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12
Q

What are S3 Lifecycle Rules used for?

A

To manage the lifecycle of objects (transitioning storage classes, deleting…).

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13
Q

What are S3 Event Notifications?

A

Receive notifications about events happening in S3 buckets.

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14
Q

What is the purpose of S3 Transfer Acceleration?

A

To speed up file transfers to/from S3.

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15
Q

What is SSE-S3?

A

Server-side encryption with keys managed by AWS.

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16
Q

What is SSE-KMS?

A

Server-side encryption with keys managed by AWS KMS.

17
Q

What are S3 Access Points used for?

A

To simplify security management for S3 buckets.

18
Q

What is S3 Object Lambda?

A

Allows you to modify an object before it is returned to the calling application.

19
Q

What is an EBS Volume?

A

A network drive that can be attached to an EC2 instance for data storage.

20
Q

How many EC2 instances can an EBS volume be attached to?

A

1 (except for io1/io2).

21
Q

Where is an EBS Volume locked to?

A

Availability Zone (AZ).

22
Q

How do you move an EBS Volume to a different AZ?

A

Create a snapshot and restore it to the new AZ.

23
Q

What does the “Delete on Termination” attribute control?

A

Whether the EBS volume is deleted when the instance terminates.

24
Q

What is Amazon EFS?

A

A managed network file system that can be mounted on multiple EC2 instances.

25
Q

What protocol does EFS use?

A

NFSv4.1

26
Q

Which type of AMI is EFS compatible with?

A

Linux-based AMIs.

27
Q

What EFS Storage Tiers are available?

A

Standard, Infrequent Access (IA), Archive.

28
Q

What is EFS One Zone?

A

EFS storage within a single AZ, offering lower cost.

29
Q

Compare EBS and EFS in terms of the number of instances they can be attached to.

A

EBS: 1 (except for io1/io2), EFS: multiple.