Which of the following options describes Infrastructure in Code?
- Script containing all needed steps to transform current state into target state.
- Checklist containing all steps needed to transform current state into target state manually.
- Blueprint containing target state. Tool transforming current sate into target state. (Ans)
CloudFormation allows you to __ a stack.
- create, update, and delete (Ans)
- create and update
- create
A minimal CloudFormation template contains:
- Format Version, Description, Resources (Ans)
- Resources, Inputs, Outputs
- Resources
A resource definition consists of:
- Identifier, Type, Properties (Ans)
- Ordinal Number, Identifier, Properties
- Type, Properties
The following resources describe…
“Resources”: {
“EC2Instance”: {
“Type”: “AWS::EC2::Instance”,
“Properties”: {
“ImageId”: “ami-bff32ccc”,
“InstanceType”: “t2.nano”
}
}
}
- a S3 Bucket.
- an EC2 Instance. (Ans)
- a RDS Database Instance.
- an AMI.
Which value is valid for the following parameter?
“Parameters”: {
“VPC”: {
“Description”: “The default VPC”,
“Type”: “AWS::EC2::VPC::Id”
}
}
- vpc-ssh-bastion-host (Ans)
- vpc-6b53320e
- subnet-e16fa6ca
Which of the following options adds the private IP address of the EC2 instance to the outputs?
{
“Resources”: {
“EC2Instance”: {
“Type”: “AWS::EC2::Instance”
},
},
“Outputs”: {
“PrivateIp”: {
“Value”: {“Fn::GetAtt”: [“EC2Instance”, “PrivateIp”]}
}
}
}
- {“Ref”: “EC2Instance”}
- {“Ref”: [“EC2Instance”, “PrivateIp”]}
- {“Fn::GetAtt”: [“EC2Instance”, “PrivateIp”]} (Ans)
A CloudFormation template includes the following mappings section.
“Mappings”: {
“RegionAMI”: {
“us-east-1”: {“AmazonLinux”: “ami-8fcee4e5”, “Ubuntu”: “ami-fce3c696”},
“eu-west-1”: {“AmazonLinux”: “ami-e1398992”, “Ubuntu”: “ami-f95ef58a”},
“ap-northeast-1”: {“AmazonLinux”: “ami-59bdb937”, “Ubuntu”: “ami-a21529cc”}
}
}
What’s the output of the following function?
{“Fn::FindInMap”: [“RegionAMI”, “eu-west-1”, “AmazonLinux”]}
- ami-e1398992 (Ans)
- ami-f95ef58a
- Nothing, the parameters are invalid.
- ami-59bdb937
A stack named webapp was created in region eu-west-1. What’s the output of the following function?
{“Fn::Select”: [“0”, {“Fn::GetAZs”: {“Ref”: “AWS::Region”}}
- az-1
- eu-west-1a (Ans)
- eu-west-1
CloudFormation parameters allow you to:
- Add additional properties to resources without changing the template
- Create multiple stacks based on the same template
- Specify input for a template when creating or updating a stack (Ans)
What’s wrong with the described EC2 instance?
“EC2Instance”: {
“Type”: “AWS::EC2::Instance”,
“Properties”: {
…
“UserData”: {“Fn::Join”: [“\n”, [
“#!/bin/bash -ex”,
“yum install -y httpd”,
“cd /var/www/html”,
“echo ‘Hello World!’ > index.html”,
“service httpd start”
]]}
}
}
- User Data is limited to 128 characters.
- There is no package called httpd.
- User Data needs to be encoded in Base64. (Ans)
A CloudFormation template is written in…
- Bash Script
- XML
- JavaScript
- JSON (Ans)
Which of the following is true of ECS?
- ECS automatically launches a fully-managed EC2 instance for every cluster created.
- At the cluster level, ECS can only be managed from the browser-based console.
- Besides for the regular AWS resources in use, ECS charges users on a per-cluster basis.
- ECS offers integration with either the ECS registry or Docker Hub images. (Ans)
You can display detailed information about an ECS cluster from the command line using…
- aws ecs clusters –list
- aws ecs list-clusters
- aws ecs describe-clusters (Ans)
- aws ecs cluster –help
You can set load balancing and auto scaling for a deployment in the __ configuration menu of the console.
- Container (Ans)
- Services
- Cluster Update
- Task Definitions
Which of the following commands will return authentication credentials for the EC2 Container Repository service?
- aws ecr login –region
- aws get-login –region
- aws ecr get-login –region (Ans)
- aws get-region
Adding the “Amazon EC2 Container Service for EC2 Role” to your EC2 instance allows _.
- the EC2 instance to be registered within an ECS system
- the account root user to manage the EC2 instance
- ECS resources to connect to the EC2 instance
- the EC2 instance to connect to ECS resources (Ans)
Which of the following files on an EC2 ECS-optimized AMI instance must be edited to permit access to Docker Hub private repositories?
- /ecs/ecs.config
- /etc/ecs/ecs-config
- /etc/ecs-config
- /etc/ecs/ecs.config (Ans)
What is the primary purpose of adding a tag to a Docker image?
- To allow for easier visual identification once your infrastructure grows
- To direct Docker to the appropriate remote repository (Ans)
- To identify the object as an image
- To identify the image’s ownership and origin
For security, the Docker website uses encryption certificates to _.
- ensure that all images uploaded to Docker Hub are free of malware
- secure the computers of local Docker clients
- ensure that all “docker run” operations are valid
- secure connections between the website and clients (Ans)
What is the role of apache2ctl in this command?
docker run -d -p 80:80 webserver /usr/sbin/apache2ctl -D FOREGROUND
- apache2ctl will check to make sure the Apache webserve software package is properly installed on a container.
- apache2ctl is the name of a Docker image.
- apache2tcl will run the Apache webserver software package when the container boots. (Ans)
- apache2ctl will launch a new Docker container as a backend server to your main container.
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