Online Test for Preparing Aws Certified Solutions Architect Associate Certification Exam Part 3 Infibee.com

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Instructions

Total Questions 20
Each question carry 1 mark
Must answer all the questions (otherwise report card will not be generated)
If you dont want to take a test, simply click the check answers button and view all the answers with explanations
Do Not Refresh the Page
No Time Limit
Good Luck :)

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1. Which of the following are features of enhanced networking? (Choose 3 answers)

A.
More Packets Per Second (PPS)
B.
Lower latency
C.
Multiple network interfaces
D.
Border Gateway Protocol (BGP) routing
E.
Less jitter

Correct Answers :

[A, B, E]

Explanation :

These are the benefits of enhanced networking.

2. You are creating a High-Performance Computing (HPC) cluster and need very low latency and high bandwidth between instances. What combination of the following will allow this? (Choose 3 answers)

A.
Use an instance type with 10 Gbps network performance.
B.
Put the instances in a placement group.
C.
Use Dedicated Instances.
D.
Enable enhanced networking on the instances.
E.
Use Reserved Instances.

Correct Answers :

[A, B, D]

Explanation :

The other answers have nothing to do with networking.

3. Which Amazon Elastic Compute Cloud (Amazon EC2) feature ensures that your instances will not share a physical host with instances from any other AWS customer?

A.
Amazon Virtual Private Cloud (VPC)
B.
Placement groups
C.
Dedicated Instances
D.
Reserved Instances

Correct Answers :

[C]

Explanation :

Dedicated Instances will not share hosts with other accounts.

4. Which of the following are true of instance stores? (Choose 2 answers)

A.
Automatic backups
B.
Data is lost when the instance stops.
C.
Very high IOPS
D.
Charge is based on the total amount of storage provisioned.

Correct Answers :

[B, C]

Explanation :

Instance stores are low-durability, high-IOPS storage that is included for free with the hourly cost of an instance.

5. Which of the following are features of Amazon Elastic Block Store (Amazon EBS)? (Choose 2 answers)

A.
Data stored on Amazon EBS is automatically replicated within an Availability Zone.
B.
Amazon EBS data is automatically backed up to tape.
C.
Amazon EBS volumes can be encrypted transparently to workloads on the attached instance.
D.
Data on an Amazon EBS volume is lost when the attached instance is stopped.

Correct Answers :

[A, C]

Explanation :

There are no tapes in the AWS infrastructure. Amazon EBS volumes persist when the instance is stopped. The data is automatically replicated within an Availability Zone. Amazon EBS volumes can be encrypted upon creation and used by an instance in the same manner as if they were not encrypted.

6. You need to take a snapshot of an Amazon Elastic Block Store (Amazon EBS) volume. How long will the volume be unavailable?

A.
It depends on the provisioned size of the volume.
B.
The volume will be available immediately.
C.
It depends on the amount of data stored on the volume.
D.
It depends on whether the attached instance is an Amazon EBS-optimized instance.

Correct Answers :

[B]

Explanation :

There is no delay in processing when commencing a snapshot.

7. You are restoring an Amazon Elastic Block Store (Amazon EBS) volume from a snapshot. How long will it be before the data is available?

A.
It depends on the provisioned size of the volume.
B.
The data will be available immediately
C.
It depends on the amount of data stored on the volume.
D.
It depends on whether the attached instance is an Amazon EBS-optimized instance.

Correct Answers :

[B]

Explanation :

The volume is created immediately but the data is loaded lazily. This means that the volume can be accessed upon creation, and if the data being requested has not yet been restored, it will be restored upon first request.

8. You have a workload that requires 15,000 consistent IOPS for data that must be durable. What combination of the following steps do you need? (Choose 2 answers)

A.
Use an Amazon Elastic Block Store (Amazon EBS)-optimized instance.
B.
Use an instance store.
C.
Use a Provisioned IOPS SSD volume.
D.
Use a magnetic volume.

Correct Answers :

[A, C]

Explanation :

B and D are incorrect because an instance store will not be durable and a magnetic volume offers an average of 100 IOPS. Amazon EBS-optimized instances reserve network bandwidth on the instance for IO, and Provisioned IOPS SSD volumes provide the highest consistent IOPS.

9. Which of the following can be accomplished through bootstrapping?

A.
Install the most current security updates.
B.
Install the current version of the application.
C.
Configure Operating System (OS) services.
D.
All of the above.

Correct Answers :

[D]

Explanation :

Bootstrapping runs the provided script, so anything you can accomplish in a script you can accomplish during bootstrapping.

10. How can you connect to a new Linux instance using SSH?

A.
Decrypt the root password.
B.
Using a certificate
C.
Using the private half of the instance’s key pair
D.
Using Multi-Factor Authentication (MFA)

Correct Answers :

[C]

Explanation :

The public half of the key pair is stored on the instance, and the private half can then be used to connect via SSH.

11. VM Import/Export can import existing virtual machines as: (Choose 2 answers)

A.
Amazon Elastic Block Store (Amazon EBS) volumes
B.
Amazon Elastic Compute Cloud (Amazon EC2) instances
C.
Amazon Machine Images (AMIs)
D.
Security groups

Correct Answers :

[B, C]

Explanation :

These are the possible outputs of VM Import/Export.

12. Which of the following can be used to address an Amazon Elastic Compute Cloud (Amazon EC2) instance over the web? (Choose 2 answers)

A.
Windows machine name
B.
Public DNS name
C.
Amazon EC2 instance ID
D.
Elastic IP address

Correct Answers :

[B, D]

Explanation :

Neither the Windows machine name nor the Amazon EC2 instance ID can be resolved into an IP address to access the instance.

13. Using the correctly decrypted Administrator password and RDP, you cannot log in to a Windows instance you just launched. Which of the following is a possible reason?

A.
There is no security group rule that allows RDP access over port 3389 from your IP address.
B.
The instance is a Reserved Instance.
C.
The instance is not using enhanced networking.
D.
The instance is not an Amazon EBS-optimized instance.

Correct Answers :

[A]

Explanation :

None of the other options will have any effect on the ability to connect.

14. You have a workload that requires 1 TB of durable block storage at 1,500 IOPS during normal use. Every night there is an Extract, Transform, Load (ETL) task that requires 3,000 IOPS for 15 minutes. What is the most appropriate volume type for this workload?

A.
Use a Provisioned IOPS SSD volume at 3,000 IOPS.
B.
Use an instance store.
C.
Use a general-purpose SSD volume.
D.
Use a magnetic volume.

Correct Answers :

[C]

Explanation :

A short period of heavy traffic is exactly the use case for the bursting nature of general-purpose SSD volumes—the rest of the day is more than enough time to build up enough IOPS credits to handle the nightly task. Instance stores are not durable, magnetic volumes cannot provide enough IOPS, and to set up a Provisioned IOPS SSD volume to handle the peak would mean spending money for more IOPS than you need.

15. How are you billed for elastic IP addresses?

A.
Hourly when they are associated with an instance
B.
Hourly when they are not associated with an instance
C.
Based on the data that flows through them
D.
Based on the instance type to which they are attached

Correct Answers :

[B]

Explanation :

There is a very small hourly charge for allocated elastic IP addresses that are not associated with an instance.

16. What is the minimum size subnet that you can have in an Amazon VPC?

A.
/24
B.
/26
C.
/28
D.
/30

Correct Answers :

[C]

Explanation :

The minimum size subnet that you can have in an Amazon VPC is /28.

17. You are a solutions architect working for a large travel company that is migrating its existing server estate to AWS. You have recommended that they use a custom Amazon VPC, and they have agreed to proceed. They will need a public subnet for their web servers and a private subnet in which to place their databases. They also require that the web servers and database servers be highly available and that there be a minimum of two web servers and two database servers each. How many subnets should you have to maintain high availability?

A.
2
B.
3
C.
4
D.
1

Correct Answers :

[C]

Explanation :

You need two public subnets (one for each Availability Zone) and two private subnets (one for each Availability Zone). Therefore, you need four subnets.

18. Which of the following is an optional security control that can be applied at the subnet layer of a VPC?

A.
Network ACL
B.
Security Group
C.
Firewall
D.
Web application firewall

Correct Answers :

[A]

Explanation :

The Amazon EC2 instance ID will be assigned by AWS as part of the launch process. The administrator password is assigned by AWS and encrypted via the public key. The instance type defines the virtual hardware and the AMI defines the initial software state. You must specify both upon launch.

19. What is the maximum size IP address range that you can have in an Amazon VPC?

A.
/16
B.
/24
C.
/28
D.
/30

Correct Answers :

[A]

Explanation :

The maximum size subnet that you can have in a VPC is /16.

20. You create a new subnet and then add a route to your route table that routes traffic out from that subnet to the Internet using an IGW. What type of subnet have you created?

A.
An internal subnet
B.
A private subnet
C.
An external subnet
D.
A public subnet

Correct Answers :

[D]

Explanation :

By creating a route out to the Internet using an IGW, you have made this subnet public.

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