EFS and EBS sample exam questions

1. What is Amazon EFS used for?
a. Data archiving
b. Object storage
c. File storage
d. Database storage

2. How is Amazon EFS different from Amazon S3?
a. Amazon EFS provides file storage, while Amazon S3 provides object storage.
b. Amazon EFS provides object storage, while Amazon S3 provides file storage.
c. Amazon EFS is used for archiving data, while Amazon S3 is used for database storage.
d. Amazon EFS is used for database storage, while Amazon S3 is used for object storage.

3. Which of the following protocols can be used with Amazon EFS?
a. FTP
b. SFTP
c. NFS
d. SMB

4. What is the maximum file size that can be stored on Amazon EFS?
a. 5 GB
b. 50 GB
c. 500 GB
d. 5 TB

5. Which of the following AWS services can be used with Amazon EFS?
a. Amazon RDS
b. Amazon DynamoDB
c. Amazon EC2
d. Amazon SNS

6. Which of the following AWS regions currently supports Amazon EFS?
a. US East (N. Virginia)
b. Asia Pacific (Tokyo)
c. EU (Ireland)
d. All of the above

7. What is the maximum number of file systems that can be created in an Amazon EFS account?
a. 1
b. 5
c. 10
d. Unlimited

8. Which of the following EFS performance modes is recommended for high-performance workloads?
a. General Purpose
b. Max I/O
c. Throughput Optimized
d. Cold Storage

9. How does Amazon EFS ensure data durability?
a. By replicating data across multiple Availability Zones within a region.
b. By automatically backing up data to Amazon S3.
c. By encrypting data at rest.
d. By using checksums to detect data corruption.

10. What is the pricing model for Amazon EFS?
a. Pay-per-use
b. Flat monthly fee
c. Hourly rate plus storage usage
d. Tiered pricing based on storage volume

11. How does Amazon EFS handle concurrent access to files by multiple Amazon EC2 instances?
a. By using file locking to prevent conflicts.
b. By creating multiple copies of the file and merging changes.
c. By distributing the file across multiple instances using a distributed file system.
d. By partitioning the file and assigning each partition to a different instance.

12. Which of the following security measures can be used with Amazon EFS?
a. AWS Identity and Access Management (IAM) policies
b. Network Access Control Lists (NACLs)
c. Security Groups
d. All of the above

13. Which of the following types of data workloads is Amazon EFS well-suited for?
a. Sequential access workloads
b. High-performance computing workloads
c. Small file workloads
d. All of the above

14. Which of the following EFS performance modes is recommended for low-latency workloads?
a. General Purpose
b. Max I/O
c. Throughput Optimized
d. Cold Storage

15. Which of the following AWS services can be used to monitor Amazon EFS performance and usage?
a. Amazon CloudWatch
b. Amazon S3
c. Amazon EC2
d. Amazon RDS

16. What is Amazon EBS used for?
a. Object storage
b. File storage
c. Database storage
d. Block storage

17. What is the maximum volume size that can be created with Amazon EBS?
a. 1 TB
b. 10 TB
c. 100 TB
d. 1 PB

18. Which of the following types of Amazon EBS volumes provides the highest performance?
a. General Purpose SSD (gp2)
b. Provisioned IOPS SSD (io1)
c. Throughput Optimized HDD (st1)
d. Cold HDD (sc1)

19. What is the maximum number of Amazon EBS volumes that can be attached to an Amazon EC2 instance?
a. 5
b. 10
c. 20
d. 30

20. What happens to an Amazon EBS volume when the associated Amazon EC2 instance is terminated?
a. The volume is deleted.
b. The volume is detached and can be reattached to another instance.
c. The volume is automatically backed up to Amazon S3.
d. The volume is transferred to the AWS account owner.

21. What is the maximum number of Amazon EBS volumes that can be attached to an Amazon EC2 instance?
a. 5
b. 10
c. 20
d. 30

22. Which of the following types of Amazon EBS volumes provides the lowest cost per gigabyte?
a. General Purpose SSD (gp2)
b. Provisioned IOPS SSD (io1)
c. Throughput Optimized HDD (st1)
d. Cold HDD (sc1)

23. How does Amazon EBS ensure data durability?
a. By replicating data across multiple Availability Zones within a region.
b. By automatically backing up data to Amazon S3.
c. By encrypting data at rest.
d. By using checksums to detect data corruption.

24. Which of the following types of Amazon EBS volumes provides the highest level of IOPS?
a. General Purpose SSD (gp2)
b. Provisioned IOPS SSD (io1)
c. Throughput Optimized HDD (st1)
d. Cold HDD (sc1)

25. What is the maximum throughput for an Amazon EBS volume?
a. 128 MB/s
b. 256 MB/s
c. 512 MB/s
d. 1 GB/s

Answers

1. A – Amazon EFS is a scalable, elastic file system for Linux-based workloads that is fully managed by AWS.
2. B – Amazon EFS provides a file system interface that allows multiple Amazon EC2 instances to access the same file system concurrently.
3. A – Amazon EFS is designed to scale elastically and automatically, without the need for manual configuration or capacity planning.
4. B – Amazon EFS can be accessed from multiple Amazon EC2 instances in the same VPC, allowing for easy sharing of data between instances.
5. D – Amazon EFS is a fully managed service, which means that AWS is responsible for maintaining and updating the underlying infrastructure.
6. D – Amazon EFS is currently available in all AWS regions.
7. D – There is no limit to the number of file systems that can be created in an Amazon EFS account.
8. B – The Provisioned Throughput mode is recommended for high-performance workloads that require consistent and low-latency performance.
9. A – Amazon EFS automatically replicates data across multiple Availability Zones within a region, ensuring high durability and availability.
10. C – Amazon EFS pricing is based on a combination of hourly rate and storage usage, with tiered pricing based on storage volume.
11. C – Amazon EFS uses a distributed file system architecture to provide concurrent access to files by multiple Amazon EC2 instances.
12. D – Amazon EFS can be secured using AWS Identity and Access Management (IAM) policies, Network Access Control Lists (NACLs), and Security Groups.
13. D – Amazon EFS is well-suited for a wide range of workloads, including those with small files, sequential access, and high-performance computing requirements.
14. A – The General Purpose mode is recommended for low-latency workloads that require a balance of I/O throughput and IOPS.
15. A – Amazon CloudWatch can be used to monitor Amazon EFS performance and usage metrics.
16. D – An Amazon EBS volume is a network-attached block storage device that can be attached to an Amazon EC2 instance.
17. A – General Purpose SSD (gp2) volumes provide the lowest cost per gigabyte of storage among the Amazon EBS volume types.
18. D – Amazon EBS volumes are designed for durability and are replicated within a single Availability Zone by default.
19. B – Provisioned IOPS SSD (io1) volumes provide the highest level of IOPS among the Amazon EBS volume types.
20. D – Amazon EBS volumes are designed for block-level storage and can be used with a wide range of workloads, including databases, file systems, and applications.
21. D – There is no limit to the number of Amazon EBS volumes that can be attached to an Amazon EC2 instance.
22. C – Throughput Optimized HDD (st1) volumes provide the lowest cost per gigabyte of storage among the Amazon EBS volume types.
23. A – Amazon EBS volumes are designed for durability and are replicated within a single Availability Zone by default.
24. B – Provisioned IOPS SSD (io1) volumes provide the highest level of IOPS among the Amazon EBS volume types.
25. D – The maximum throughput for an Amazon EBS volume is 1 GB/s.