Question #26
You are designing a system that has a Bastion host. This component needs to be highly available without human intervention.
Which of the following approaches would you select?
- A. Run the bastion on two instances one in each AZ
- B. Run the bastion on an active Instance in one AZ and have an AMI ready to boot up in the event of failure
- C. Configure the bastion instance in an Auto Scaling group. Specify the Auto Scaling group to include multiple AZs but have a min-size of 1 and max-size of 1
- D. Configure an ELB in front of the bastion instance
Correct Answer: C
Question #27
Which of the following statements about this S3 bucket policy is true?
- A. Denies the server with the IP address 192 168 100 0 full access to the “mybucket” bucket
- B. Denies the server with the IP address 192 168 100 188 full access to the “mybucket” bucket
- C. Grants all the servers within the 192 168 100 0/24 subnet full access to the “mybucket” bucket
- D. Grants all the servers within the 192 168 100 188/32 subnet full access to the “mybucket” bucket
Correct Answer: B
http://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_elements.html http://docs.aws.amazon.com/AmazonS3/latest/dev/amazon-s3-policy-keys.htmlQuestion #28
Which of the following requires a custom CloudWatch metric to monitor?
- A. Data transfer of an EC2 instance
- B. Disk usage activity of an EC2 instance
- C. Memory Utilization of an EC2 instance
- D. CPU Utilization of an EC2 instance
Correct Answer: C
http://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/ec2-metricscollected.html
CPU, Disk I/O, Data Transfer are default metrics. Memory is not mentioned.
Question #29
You run a web application where web servers on EC2 Instances are in an Auto Scaling group. Monitoring over the last 6 months shows that 6 web servers are necessary to handle the minimum load During the day up to
12 servers are needed five to six days per year, the number of web servers required might go up to 15.
What would you recommend to minimize costs while being able to provide hill availability?
- A. 6 Reserved instances (heavy utilization). 6 Reserved instances {medium utilization), rest covered by On-Demand instances
- B. 6 Reserved instances (heavy utilization). 6 On-Demand instances, rest covered by Spot Instances
- C. 6 Reserved instances (heavy utilization) 6 Spot instances, rest covered by On-Demand instances
- D. 6 Reserved instances (heavy utilization)
Correct Answer: B
Question #30
You have been asked to propose a multi-region deployment of a web-facing application where a controlled portion of your traffic is being processed by an alternate region.
Which configuration would achieve that goal?
- A. Route53 record sets with weighted routing policy
- B. Route53 record sets with latency based routing policy
- C. Auto Scaling with scheduled scaling actions set
- D. Elastic Load Balancing with health checks enabled
Correct Answer: A
https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/routing-policy.html
