Which of the following is NOT an advantage of using AWS Direct Connect?
A
AWS Direct Connect makes it easy to establish a dedicated network connection from your premises to AWS. Using AWS Direct Connect, you can establish private connectivity between AWS and your datacenter, office, or colocation environment, which in many cases can reduce your network costs, increase bandwidth throughput, and provide a more consistent network experience than Internet-based connections.
By using industry standard 802.1q VLANs, this dedicated connection can be partitioned into multiple virtual interfaces. This allows you to use the same connection to access public resources such as objects stored in Amazon S3 using public IP address space, and private resources such as Amazon EC2 instances running within an Amazon Virtual Private Cloud (VPC) using private IP space, while maintaining network separation between the public and private environments.
Reference:
http://aws.amazon.com/directconnect/#details
An organization is setting up an application on AWS to have both High Availability (HA) and Disaster Recovery (DR). The organization wants to have both
Recovery point objective (RPO) and Recovery time objective (RTO) of 10 minutes.
Which of the below mentioned service configurations does not help the organization achieve the said RPO and RTO?
C
AWS provides an on demand, scalable infrastructure. AWS EC2 allows the user to launch On- Demand instances and the organization should create an AMI of the running instance. Copy the AMI to another region to enable Disaster Recovery (DR) in case of region failure. The organization should also use EBS for persistent storage and take a snapshot every 10 minutes to meet Recovery time objective (RTO). They should also setup an elastic IP and use it with Route 53 to route requests to the same IP. When one of the instances fails the organization can launch new instances and assign the same EIP to a new instance to achieve
High Availability (HA). The ELB works only for a particular region and does not route requests across regions.
Reference:
http://d36cz9buwru1tt.cloudfront.net/AWS_Disaster_Recovery.pdf
An organization is having an application which can start and stop an EC2 instance as per schedule. The organization needs the MAC address of the instance to be registered with its software. The instance is launched in EC2-CLASSIC.
How can the organization update the MAC registration every time an instance is booted?
A
AWS provides an on demand, scalable infrastructure. AWS EC2 allows the user to launch On- Demand instances. AWS does not provide a fixed MAC address to the instances launched in EC2-CLASSIC. If the instance is launched as a part of EC2-VPC, it can have an ENI which can have a fixed MAC. However, with EC2-
CLASSIC, every time the instance is started or stopped it will have a new MAC address. To get this MAC, the organization can run a script on boot which can fetch the instance metadata and get the MAC address from that instance metadata. Once the MAC is received, the organization can register that MAC with the software.
Reference:
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/AESDG-chapter-instancedata.html
Does Amazon RDS API provide actions to modify DB instances inside a VPC and associate them with DB Security Groups?
B
You can use the action Modify DB Instance, available in the Amazon RDS API, to pass values for the parameters DB Instance Identifier and DB Security Groups specifying the instance ID and the DB Security Groups you want your instance to be part of.
Reference:
http://docs.aws.amazon.com/AmazonRDS/latest/APIReference/API_ModifyDBInstance.html
An organization is setting up a backup and restore system in AWS of their in premise system. The organization needs High Availability(HA) and Disaster Recovery
(DR) but is okay to have a longer recovery time to save costs.
Which of the below mentioned setup options helps achieve the objective of cost saving as well as DR in the most effective way?
B
AWS has many solutions for Disaster Recovery(DR) and High Availability(HA). When the organization wants to have HA and DR but are okay to have a longer recovery time they should select the option backup and restore with S3. The data can be sent to S3 using either Direct Connect, Storage Gateway or over the internet.
The EC2 instance will pick the data from the S3 bucket when started and setup the environment. This process takes longer but is very cost effective due to the low pricing of S3. In all the other options, the EC2 instance might be running or there will be AMI storage costs. Thus, it will be a costlier option. In this scenario the organization should plan appropriate tools to take a backup, plan the retention policy for data and setup security of the data.
Reference:
http://d36cz9buwru1tt.cloudfront.net/AWS_Disaster_Recovery.pdf
By default, what is the maximum number of Cache Nodes you can run in Amazon ElastiCache?
A
In Amazon ElastiCache, you can run a maximum of 20 Cache Nodes.
Does an AWS Direct Connect location provide access to Amazon Web Services in the region it is associated with as well as access to other US regions?
C
An AWS Direct Connect location provides access to Amazon Web Services in the region it is associated with, as well as access to other US regions. For example, you can provision a single connection to any AWS Direct Connect location in the US and use it to access public AWS services in all US Regions and AWS
GovCloud (US).
Reference:
http://docs.aws.amazon.com/directconnect/latest/UserGuide/Welcome.html
Which of the following components of AWS Data Pipeline specifies the business logic of your data management?
B
A pipeline definition specifies the business logic of your data management.
Reference:
http://docs.aws.amazon.com/datapipeline/latest/DeveloperGuide/what-is-datapipeline.html
What feature of the load balancing service attempts to force subsequent connections to a service to be redirected to the same node as long as it is online?
D
Session persistence is a feature of the load balancing service. It attempts to force subsequent connections to a service to be redirected to the same node as long as it is online.
Reference:
http://docs.rackspace.com/loadbalancers/api/v1.0/clb-devguide/content/Concepts-d1e233.html
What types of identities do Amazon Cognito identity pools support?
A
Amazon Cognito identity pools support both authenticated and unauthenticated identities. Authenticated identities belong to users who are authenticated by a public login provider or your own backend authentication process. Unauthenticated identities typically belong to guest users.
Reference:
http://docs.aws.amazon.com/cognito/devguide/identity/identity-pools/
