AWS-SysOps Exam
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Q141. - (Topic 2)
A user has received a message from the support team that an issue occurred 1 week back between 3 AM to 4 AM and the EC2 server was not reachable. The user is checking the CloudWatch metrics of that instance. How can the user find the data easily using the CloudWatch console?
A. The user can find the data by giving the exact values in the time Tab under CloudWatch metrics
B. The user can find the data by filtering values of the last 1 week for a 1 hour period in the Relative tab under CloudWatch metrics
C. It is not possible to find the exact time from the console. The user has to use CLI to provide the specific time
D. The user can find the data by giving the exact values in the Absolute tab under CloudWatch metrics
Answer: D
Explanation:
If the user is viewing the data inside the CloudWatch console, the console provides options to filter values either using the relative period, such as days /hours or using the Absolute tab where the user can provide data with a specific date and time. The console also provides the option to search using the local timezone under the time range caption in the console.
Q142. - (Topic 2)
A user has launched two EBS backed EC2 instances in the US-East-1a region. The user wants to change the zone of one of the instances. How can the user change it?
A. Stop one of the instances and change the availability zone
B. The zone can only be modified using the AWS CLI
C. From the AWS EC2 console, select the Actions - > Change zones and specify new zone
D. Create an AMI of the running instance and launch the instance in a separate AZ
Answer: D
Explanation:
With AWS EC2, when a user is launching an instance he can select the availability zone (AZ. at the time of launch. If the zone is not selected, AWS selects it on behalf of the user. Once the instance is launched, the user cannot change the zone of that instance unless he creates an AMI of that instance and launches a new instance from it.
Q143. - (Topic 2)
A user has launched an ELB which has 5 instances registered with it. The user deletes the
ELB by mistake. What will happen to the instances?
A. ELB will ask the user whether to delete the instances or not
B. Instances will be terminated
C. ELB cannot be deleted if it has running instances registered with it
D. Instances will keep running
Answer: D
Explanation:
When the user deletes the Elastic Load Balancer, all the registered instances will be deregistered. However, they will continue to run. The user will incur charges if he does not take any action on those instances.
Q144. - (Topic 3)
An application you maintain consists of multiple EC2 instances in a default tenancy VPC. This application has undergone an internal audit and has been determined to require dedicated hardware for one instance. Your compliance team has given you a week to move this instance to single-tenant hardware.
Which process will have minimal impact on your application while complying with this requirement?
A. Create a new VPC with tenancy=dedicated and migrate to the new VPC
B. Use ec2-reboot-instances command line and set the parameter "dedicated=true"
C. Right click on the instance, select properties and check the box for dedicated tenancy
D. Stop the instance, create an AMI, launch a new instance with tenancy=dedicated, and terminate the old instance
Answer: A
Explanation: Reference:
http://docs.aws.amazon.com/AWSEC2/latest/CommandLineReference/ApiReference-cmd-CreateVpc.html
Q145. - (Topic 3)
A user is receiving a notification from the RDS DB whenever there is a change in the DB security group. The user does not want to receive these notifications for only a month. Thus, he does not want to delete the notification. How can the user configure this?
A. Change the Disable button for notification to “Yes” in the RDS console
B. Set the send mail flag to false in the DB event notification console
C. The only option is to delete the notification from the console
D. Change the Enable button for notification to “No” in the RDS console
Answer: D
Explanation:
Amazon RDS uses the Amazon Simple Notification Service to provide a notification when an Amazon RDS event occurs. Event notifications are sent to the addresses that the user has provided while creating the subscription. The user can easily turn off the notification without deleting a subscription by setting the Enabled radio button to No in the Amazon RDS console or by setting the Enabled parameter to false using the CLI or Amazon RDS API.
Q146. - (Topic 1)
You are using ElastiCache Memcached to store session state and cache database queries in your infrastructure. You notice in CloudWatch that Evictions and GetMisses are Doth very high.
What two actions could you take to rectify this?
Choose 2 answers
A. Increase the number of nodes in your cluster
B. Tweak the max_item_size parameter
C. Shrink the number of nodes in your cluster
D. Increase the size of the nodes in the duster
Answer: B,D
Q147. - (Topic 3)
A user is trying to create a PIOPS EBS volume with 4000 IOPS and 100 GB size. AWS does not allow the user to create this volume. What is the possible root cause for this?
A. The ratio between IOPS and the EBS volume is higher than 30
B. The maximum IOPS supported by EBS is 3000
C. The ratio between IOPS and the EBS volume is lower than 50
D. PIOPS is supported for EBS higher than 500 GB size
Answer: A
Explanation:
A provisioned IOPS EBS volume can range in size from 10 GB to 1 TB and the user can provision up to 4000 IOPS per volume. The ratio of IOPS provisioned to the volume size requested should be a maximum of 30; for example, a volume with 3000 IOPS must be at least 100 GB.
Q148. - (Topic 2)
A user has stored data on an encrypted EBS volume. The user wants to share the data with his friend’s AWS account. How can user achieve this?
A. Create an AMI from the volume and share the AMI
B. Copy the data to an unencrypted volume and then share
C. Take a snapshot and share the snapshot with a friend
D. If both the accounts are using the same encryption key then the user can share the volume directly
Answer: B
Explanation:
AWS EBS supports encryption of the volume. It also supports creating volumes from existing snapshots
provided the snapshots are created from encrypted volumes. If the user is having data on an encrypted volume and is trying to share it with others, he has to copy the data from the encrypted volume to a new unencrypted volume. Only then can the user share it as an encrypted volume data. Otherwise the snapshot cannot be shared.
Q149. - (Topic 2)
A user wants to disable connection draining on an existing ELB. Which of the below mentioned statements helps the user disable connection draining on the ELB?
A. The user can only disable connection draining from CLI
B. It is not possible to disable the connection draining feature once enabled
C. The user can disable the connection draining feature from EC2 -> ELB console or from CLI
D. The user needs to stop all instances before disabling connection draining
Answer: C
Explanation:
The Elastic Load Balancer connection draining feature causes the load balancer to stop sending new requests to the back-end instances when the instances are deregistering or become unhealthy, while ensuring that inflight requests continue to be served. The user can enable or disable connection draining from the AWS EC2 console -> ELB or using CLI.
Q150. - (Topic 1)
Your organization's security policy requires that all privileged users either use frequently rotated passwords or one-time access credentials in addition to username/password.
Which two of the following options would allow an organization to enforce this policy for AWS users?
Choose 2 answers
A. Configure multi-factor authentication for privileged 1AM users
B. Create 1AM users for privileged accounts
C. Implement identity federation between your organization's Identity provider leveraging the 1AM Security Token Service
D. Enable the 1AM single-use password policy option for privileged users
Answer: C,D