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AWS-SysOps PDF DEMO:
QUESTION NO: 1
An application running on Amazon EC2 instances in an Auto Scaling group across multiple
Availability Zones was deployed using an AWS CloudFormation template. The SysOps team has patched the Amazon Machine Image (AMI) version and must update all the EC2 instances to use the new AMI.
How can the SysOps Administrator use CloudFormation to apply the new AMI while maintaining a minimum level of active instances to ensure service continuity?
A. Set an AutoScalingUpdate policy in the CloudFormation template to update the stack.
B. Run the aws cloudfomation update-stack command with the - rollback-configuration option
C. Deploy a second CloudFormation stack and use Amazon Route 53 to redirect traffic to the new stack
D. Update the CloudFormation template with the new AMI ID, then reboot the EC2 instances
Answer: A
QUESTION NO: 2
A user has setup an EBS backed instance and attached 2 EBS volumes to it. The user has setup a CloudWatch alarm on each volume for the disk data. The user has stopped the EC2 instance and detached the EBS volumes.
What will be the status of the alarms on the EBS volume?
A. Insufficient Data
B. OK
C. The EBS cannot be detached until all the alarms are removed
D. Alarm
Answer: A
Explanation
Amazon CloudWatch alarm watches a single metric over a time period that the user specifies and performs one or more actions based on the value of the metric relative to a given threshold over a number of time periods. Alarms invoke actions only for sustained state changes. There are three states of the alarm: OK, Alarm and Insufficient data. In this case since the EBS is detached and inactive the state will be Insufficient.
QUESTION NO: 3
You receive a frantic call from a new DBA who accidentally dropped a table containing all your customers.
Which Amazon RDS feature will allow you to reliably restore your database to within 5 minutes of when the mistake was made?
A. Multi-AZ RDS
B. RDS automated backup
C. RDS read replicas
D. RDS snapshots
Answer: B
Explanation
References:
https://aws.amazon.com/rds/details/#ha
https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_PIT.html
QUESTION NO: 4
A company is setting up a VPC peering connection between its VPC and a customer's VPC The company VPC is an IPv4 CIDR block of 172 16 0 0 16 and the customer's is an IPv4 CIDR block of 10 0
0.0/16 The SysOps Administrator wants to be able to ping the customer's database private IP address from one of the company's Amazon EC2 instances What action should be taken to meet the requirements?
A. Instruct the customer to set up a VPC with the same IPv4 CIDR block as that of the source VPC 172
16
0 0V16
B. Instruct the customer to create a virtual private gateway to link the two VPCs
C. Ensure that both VPC owners manually add a route to the VPC route tables that points to the IP address range of the other VPC
D. Ensure that both accounts are linked and are part of consolidated billing to create a file sharing network and then enable VPC peering
Answer: C
QUESTION NO: 5
A user has hosted an application on EC2 instances. The EC2 instances are configured with ELB and Auto Scaling. The application server session time out is 2 hours. The user wants to configure connection draining to ensure that all in-flight requests are supported by ELB even though the instance is being deregistered. What time out period should the user specify for connection draining?
A. 5 minutes
B. 1 hour
C. 2 hours
D. 30 minutes
Answer: B
Explanation
When you enable connection draining, you can specify a maximum time for the load balancer to keep connections alive before reporting the instance as de-registered. The maximum timeout value can be set between 1 and 3,600 seconds (the default is 300 seconds). When the maximum time limit is reached, the load balancer forcibly closes connections to the de-registering instance.
References:
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Updated: May 27, 2022