AWS S3 MCQs (25)
1) S3 stands for?
A. Simple Storage Service
B. Secure Storage System
C. Server Storage Service
D. Simple Server Storage
2) S3 is mainly used for?
A. Compute
B. Object Storage
C. Database
D. Networking
3) In S3, data is stored as?
A. Blocks
B. Files only
C. Objects
D. Rows
4) The top-level container in S3 is called?
A. Folder
B. Bucket
C. Volume
D. Instance
5) Bucket names must be?
A. Unique globally
B. Unique only in account
C. Same for all regions
D. Random only
6) S3 provides durability close to?
A. 90%
B. 99%
C. 99.9%
D. 99.999999999% (11 9s)
7) Which class is best for frequent access?
A. S3 Standard
B. Glacier Deep Archive
C. Glacier Flexible Retrieval
D. One Zone-IA
8) Which class is for infrequent access but rapid retrieval?
A. S3 Standard-IA
B. S3 Standard only
C. Glacier Deep Archive
D. S3 Outposts
9) Which feature helps keep multiple versions of an object?
A. Replication
B. Versioning
C. Lifecycle
D. Encryption
10) You can host a static website directly from?
A. EC2 only
B. S3 Bucket (Static Website Hosting)
C. RDS
D. DynamoDB only
11) Which is used to move objects automatically between storage classes?
A. IAM Policy
B. Lifecycle Rules
C. Route 53
D. CloudTrail
12) Server-side encryption option managed by S3 is?
A. SSE-S3
B. TLS only
C. SSH
D. VPN
13) Encryption using AWS KMS keys is called?
A. SSE-KMS
B. SSE-S3
C. SSE-C
D. E2E-SSL
14) SSE-C means?
A. S3 stores keys
B. Customer provides encryption keys
C. No encryption
D. Only for Glacier
15) Public access can be controlled using?
A. Bucket Policy
B. ACL
C. Block Public Access
D. All of the above
16) What gives permissions at bucket level in JSON format?
A. Security Group
B. Bucket Policy
C. Key Pair
D. AMI
17) Which logging tracks API calls for S3?
A. CloudTrail
B. CloudWatch Logs only
C. Route 53
D. Inspector
18) Which feature allows content delivery with caching for S3 objects?
A. CloudFront
B. VPC Peering
C. Direct Connect
D. EBS
19) Cross-Region Replication (CRR) requires?
A. Versioning enabled
B. Bucket must be public
C. EC2 instance
D. CloudFront only
20) S3 Object Lock is mainly used for?
A. Delete objects faster
B. Prevent deletion/changes (WORM)
C. Compress objects
D. Increase bandwidth
21) A pre-signed URL is used to?
A. Make bucket private forever
B. Grant temporary access to an object
C. Encrypt objects
D. Change region
22) Which is best for long-term archive at lowest cost?
A. S3 Standard
B. S3 Intelligent-Tiering
C. Glacier Deep Archive
D. Standard-IA
23) Maximum single PUT upload size (without multipart) is?
A. 5 GB
B. 50 GB
C. 500 MB
D. 1 TB
24) Multipart upload is recommended when object size is?
A. More than 5 GB only
B. More than 100 MB
C. Exactly 1 MB
D. Only for images
25) S3 access control is primarily managed by?
A. IAM + Bucket Policies/ACLs
B. Security Groups
C. NACL only
D. Route 53
Answer Key
1) A
2) B
3) C
4) B
5) A
6) D
7) A
8) A
9) B
10) B
11) B
12) A
13) A
14) B
15) D
16) B
17) A
18) A
19) A
20) B
21) B
22) C
23) A
24) B
25) A
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