All About Simulation CLF-C01 Practice Test

NEW QUESTION 1
Big Cloud Jumbo Corp is beginning to explore migrating their entire on-premises data center to AWS. They are very concerned about how much it will cost once their entire I.T. infrastructure is running on AWS. What tool can you recommend so that they can estimate what the cost of using AWS may be?
Choose the Correct Answer

• A. AWS Estimate Calculator
• B. AWS TCO Calculator
• C. AWS Cost Explorer
• D. AWS Migration Cost Calculator

Answer: B

Explanation:
The AWS TCO (Total Cost of Ownership) Calculator is a free tool provided by AWS. It allows you to compare your current on-premises cost vs. estimated AWS cost.

NEW QUESTION 2
What services has built-in DDoS mitigation and/or protection?
Choose the Correct Answer

• A. EC2
• B. RDS
• C. SNS
• D. None of the above

Answer: D

Explanation:
AWS services with built-in DDoS migigation/protection include: 1) Route 53 2) CloudFront 3) WAF (web application firewall) 4) Elastic Load Balancing 5) VPCs and Security Groups

NEW QUESTION 3
What best describes the concept of scalability?
Choose the Correct Answer

• A. The ability for a system to withstand a certain amount of failure and still remain functional.
• B. The ability for a system to grow in size, capacity, and/or scope.
• C. The ability for a system to grow and shrink based on demand.
• D. The ability for a system be accessible when you attempt to access i

Answer: B

Explanation:
Scalability refers to the concept of a system being able to easily (and cost-effectively) scale UP. For web applications, this means the ability to easily add server capacity when demand requires.

NEW QUESTION 4
What acts as an address (like a mailing address) for a web server located on a network?
Choose the Correct Answer

• A. DNS Server
• B. IP Address
• C. Common language domain name
• D. None of the above

Answer: B

Explanation:
An IP address is a severs address on a network. It is how traffic/request get routed to it (much like a piece of mail gets routed to your home).

NEW QUESTION 5
What AWS service allows you to have your own private network in the AWS cloud?
Choose the Correct Answer

• A. Virtual Private Network (VPN)
• B. Virtual Private Cloud (VPC)
• C. Virtual Cloud Network (VCN)
• D. None of the abov

Answer: B

Explanation:
A Virtual Private Cloud (VPC) is a private sub-section of AWS that is your own private network. You control what resources you place inside the VPC and the security features around it.

NEW QUESTION 6
Tracy has created a web application, placing it's underlining infrastructure in the N. Virginia (US-East-
1) region. After several months, Tracy notices that much of the traffic coming to her website is coming from Japan. What can Tracy do to (best) help reduce latency for her users in Japan?
Choose the Correct Answer

• A. Copy the current VPC and located in US-East-1 and ask AWS to move it to a region closest to Japan
• B. Create a and manage a complete duplicate copy of the web application and its infrastructure in a region closest to Japan.
• C. Create a CDN using CloudFront, making sure the proper content is cached at Edge Locations closest to Japan.
• D. Create a CDN using CloudCache, making sure the proper content is cached at Edge Locations closest to Japan.

Answer: C

Explanation:
CloudFront is AWS's content delivery network (CDN) service. You can use it to cache web content at edge locations what are closest to you customers. This will decrease latency for the customer and improve overall performance.

NEW QUESTION 7
If you have a large collection of reproducible objects, which S3 storage class should you use if low cost is your priority?
Choose the Correct Answer

• A. Glacier
• B. Standard
• C. Reduced Redundancy
• D. None of the above

Answer: C

Explanation:
The reduced redundancy storage class has the lowest durability of all the storage classes. This means object stored in this storage class have the highest probability of being lost. So you should only store objects in this storage class if they can be easily reproduced. In exchange for the lower durability, the cost is lower than the standard storage class.

NEW QUESTION 8
Mike is setting up the infrastructure for a web application that requires three EC2 instances to handle the expected demand. However, when testing the application, Mike find that all traffic to the application is being routed to only one of the servers. What AWS feature should he add to his application in order to have traffic evenly distributed between all three servers?
Choose the Correct Answer

• A. Elastic Load Balancer
• B. Auto Scaling
• C. Route 53
• D. CloudFront

Answer: A

Explanation:
An Elastic Load Balancer is designed to evenly distribute incoming web traffic between all servers that are associated with it.

NEW QUESTION 9
You are trying to organize and import (to AWS) gigabytes of data that are currently structured in JSON-like, name-value documents. What AWS service would best fit your needs?
Choose the Correct Answer

• A. Lambda
• B. Aurora
• C. RDS
• D. DynamoDB

Answer: D

Explanation:
DynamoDB is AWS's NoSQL database offering. NoSQL databases are for non-structured data that are typically stored in JSON-like, name-value documents.

NEW QUESTION 10
S3 storage classes are rated by what two metric categories? (Select two) Choose the 2 Correct answers:

• A. Objectivity
• B. Durability
• C. Availability
• D. Fault tolerance

Answer: BC

Explanation:
Each S3 storage class is rated on its availability and durability.

NEW QUESTION 11
What is AWS's serverless compute service?
Choose the Correct Answer

• A. S3
• B. Lambda
• C. EC2
• D. None of the above

Answer: B

Explanation:
AWS has two main compute services, EC2 (server-based) and Lambda (serverless).

NEW QUESTION 12
What AWS service uses Edge Locations for content caching?
Choose the Correct Answer

• A. ElastiCache
• B. Route 53
• C. CloudFront
• D. CloudCache

Answer: C

Explanation:
CloudFront is a content caching service provided by AWS that utilizes "Edge Locations," which are AWS data centers located all around the world.

NEW QUESTION 13
Amit is running a web application with a capacity of 5000 users. Every few days, traffic reaches 5000 users and any additional users are being denied access. What can Amit do to efficiently automate the process of adding and removing server capacity based on traffic demand?
Choose the Correct Answer

• A. Enable elastic load balancing on his application.
• B. Automating this process cannot be done
• C. Enable auto scaling on his application.
• D. Write a custom script to automate the process

Answer: C

Explanation:
Auto scaling in AWS allows you to configure metric-based rules that (when triggered) will add and/or remove instances (server capacity) to your application. Adding/moving instances is then automated based on the metric rules you configure.

NEW QUESTION 14
Thomas is managing the access rights and credentials for all the employees that have access to his company's AWS account. This morning, his was notified that some of these accounts may have been compromised, and he now needs to change the password policy and re-generate a new password for all users. What AWS service does Thomas need to use in order to accomplish this?
Choose the Correct Answer

• A. Policy and Access Management
• B. Elastic Cloud Compute
• C. Access Management
• D. None of the abov

Answer: D

Explanation:
Identity and Access Management (IAM) is the AWS service where password policies and user credentials are managed. (Policy and Access Management as a service does not exist).

NEW QUESTION 15
Your company's upper management is getting very nervous about managing governance, compliance, and risk auditing in AWS. What service should you enable and inform upper management about?
Choose the Correct Answer

• A. CloudAudit
• B. CloudTrail
• C. CloudCompliance
• D. CloudWatch

Answer: B

Explanation:
AWS CloudTrail is designed to log all actions taken in your AWS account. This provides a great resource for governance, compliance, and risk auditing.

NEW QUESTION 16
The concept of elasticity is most closely associated with which of the following?
Choose the Correct Answer

• A. Auto Scaling
• B. Network Security
• C. Serverless Computing
• D. Elastic Load Balancing

Answer: A

Explanation:
Elasticity is the concept that a system can easily (and cost-effectively) both increase in capacity based on-demand and also shrink in capacity based on-demand. Auto Scaling on AWS is specifically designed to (automatically) increase and decrease server capacity based on-demand.

NEW QUESTION 17
What is the availability and durability rating of S3 Standard Storage Class?
Choose the Correct Answer

• A. 99.999999999% Durability and 99.99% Availability
• B. 99.999999999% Availability and 99.90% Durability
• C. 99.999999999% Availability and 99.99% Durability
• D. 99.999999999% Durability and 99.00% Availability

Answer: A

Explanation:
S3 Standard Storage class has a rating of 99.999999999% durability (referred to as 11 nines) and 99.99% availability.

NEW QUESTION 18
Under what circumstances would you choose to use the AWS service CloudTrail?
Choose the Correct Answer

• A. When you want to collect and view resource metrics.
• B. When you want to log what actions various IAM users are taking in your AWS account.
• C. When you want a serverless compute platform.
• D. When you want to send SMS notificaitions based on events that occur in your accoun

Answer: B

Explanation:
CloudTrail is AWS's logging service used to log actions taken by users in your AWS account.

NEW QUESTION 19
Donna needs to provision a Linux server to run a web application on. What AWS service should she use to create the Linux server?
Choose the Correct Answer

• A. VPC
• B. Lambda
• C. IAM
• D. EC2

Answer: D

Explanation:
Elastic Cloud Compute (EC2) is AWS server-based compute service platform. You can use it to provision and use Linux- and Windows-based servers.

NEW QUESTION 20
What best describes the concept of elasticity?
Choose the Correct Answer

• A. The ability for a system to grow in size, capacity, and/or scope.
• B. The ability for a system to withstand a certain amount of failure and still remain functional.
• C. The ability for a system to grow and shrink based on demand.
• D. The ability for a system be accessible when you attempt to access i

Answer: C

Explanation:
Elasticity (think of a rubber band) defines a system that can easily (and cost-effectively) grow and shrink based on required demand.

NEW QUESTION 21
John, member of your company's development team, needs access to company's AWS account. What AWS service is used to manage such access?
Choose the Correct Answer

• A. S3
• B. Route 53
• C. IAM
• D. EC2

Answer: C

Explanation:
Identity & Access Management (IAM) is the AWS service where user accounts, credentials, and service access is managed.

NEW QUESTION 22
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