A user has enabled the CloudWatch alarm to estimate the usage charges. If the user disables moni-toring of the estimated charges but does not delete the billing alert from the AWS account, what will happen?
C
To create an alarm on the estimated AWS usage charges, a user must enable monitoring of estimated AWS charges. This enables creating the metric data, which will be used to create a billing alarm. Once the estimated charges monitoring is enabled, the user cannot disable it. The user has to delete the alarms to stop receiving any notifications on billing.
Reference:
http://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/gs_monitor_estimated_charges_with_cloudwatch.html
What does enabling a sticky session with ELB do?
C
By default, a load balancer routes each request independently to the registered instance with the smallest load. However, you can use the sticky session feature
(also known as session affinity), which enables the load balancer to bind a user's session to a specific instance. This ensures that all requests from the user during the session are sent to the same instance.
Reference:
http://docs.aws.amazon.com/ElasticLoadBalancing/latest/DeveloperGuide/elb-sticky-sessions.html
Which of the following statements is true of an Auto Scaling group?
A
An Auto Scaling group can contain EC2 instances that come from one or more Availability Zones within the same region. However, an Auto Scaling group cannot span multiple regions.
Reference:
http://docs.aws.amazon.com/AutoScaling/latest/DeveloperGuide/US_AddAvailabilityZone.html
Which of the following activities is NOT performed by the Auto Scaling policy?
A
Auto Scaling policies can scale up or down based on the user-defined policies, health status checks or schedules. It also performs a health check on the instances, terminates unhealthy instances, and launches healthy instances to maintain the current instance level. Scaling provides you with options, outside of scaling policies, to override attributes from the instance and use the values that you need. For example, you can override the instance type using AWS CLI commands.
Reference:
http://docs.aws.amazon.com/autoscaling/latest/userguide/create-lc-with-instanceID.html
Which of the following services is used to monitor the Amazon Web Services resources?
A
AWS CloudWatch is a service used to monitor the AWS resources and the applications running on EC2. It collects and tracks the metrics of various services or applications.
Reference:
http://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/WhatIsCloudWatch.html
What is Amazon Import/Export?
C
AWS Import/Export accelerates transferring large amounts of data between the AWS cloud and portable storage devices that you mail to us. AWS transfers data directly onto and off of your stor-age devices using Amazon high-speed internal network.
Reference:
http://docs.aws.amazon.com/AWSImportExport/latest/DG/whatisIE.html
Which of the choices below best describes what Auto Scaling is well suited for?
B
Auto Scaling is well suited to both applications that have stable demand patterns and that experi-ence hourly, daily, or weekly variability in usage. Whether the demand is predictable or unpredicta-ble auto scaling can be a good choice. If the demand is predictable and long term you may choose reserved instances. If the demand is unpredictable you may choose on-demand or even spot instance (if you can afford to have an instance lost unexpectedly).
Reference:
http://aws.amazon.com/autoscaling/
True or False: Amazon Route 53 provides highly available and scalable Domain Name System (DNS), domain name registration, and health-checking web services.
D
Amazon Route 53 provides highly available and scalable Domain Name System (DNS), domain name registration, and health-checking web services.
Reference:
http://aws.amazon.com/route53/faqs/
Which of the following statements is true of Elastic Load Balancing?
C
Elastic Load Balancing automatically distributes incoming traffic across multiple EC2 instances.
You create a load balancer and register instances with the load balancer in one or more Availability Zones. The load balancer serves as a single point of contact for clients.
Reference:
http://docs.aws.amazon.com/ElasticLoadBalancing/latest/DeveloperGuide/SvcIntro.html
You are setting up a VPC and you need to set up a public subnet within that VPC. Which following requirement must be met for this subnet to be considered a public subnet?
B
A virtual private cloud (VPC) is a virtual network dedicated to your AWS account. It is logically isolated from other virtual networks in the AWS cloud. You can launch your AWS resources, such as Amazon EC2 instances, into your VPC. You can configure your VPC: you can select its IP ad-dress range, create subnets, and configure route tables, network gateways, and security settings. A subnet is a range of IP addresses in your VPC. You can launch AWS resources into a subnet that you select. Use a public subnet for resources that must be connected to the internet, and a private subnet for resources that won't be connected to the
Internet. If a subnet's traffic is routed to an in-ternet gateway, the subnet is known as a public subnet. If a subnet doesn't have a route to the Inter-net gateway, the subnet is known as a private subnet. If a subnet doesn't have a route to the internet gateway, but has its traffic routed to a virtual private gateway, the subnet is known as a VPN-only subnet.
Reference:
http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_Subnets.html
