AWS-SysOps Exam
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Q171. - (Topic 3)
A user has created an Auto Scaling group using CLI. The user wants to enable CloudWatch detailed monitoring for that group. How can the user configure this?
A. When the user sets an alarm on the Auto Scaling group, it automatically enables detail monitoring
B. By default detailed monitoring is enabled for Auto Scaling
C. Auto Scaling does not support detailed monitoring
D. Enable detail monitoring from the AWS console
Answer: B
Explanation:
CloudWatch is used to monitor AWS as well as the custom services. It provides either basic or detailed monitoring for the supported AWS products. In basic monitoring, a service sends data points to CloudWatch every five minutes, while in detailed monitoring a service sends data points to CloudWatch every minute. To enable detailed instance monitoring for a new Auto Scaling group, the user does not need to take any extra steps. When the user creates an Auto Scaling launch config as the first step for creating an Auto Scaling group, each launch configuration contains a flag named InstanceMonitoring.Enabled. The default value of this flag is true. Thus, the user does not need to set this flag if he wants detailed monitoring.
Q172. - (Topic 1)
You are running a database on an EC2 instance, with the data stored on Elastic Block Store (EBS) for persistence At times throughout the day, you are seeing large variance in the response times of the database queries Looking into the instance with the isolate command you see a lot of wait time on the disk volume that the database's data is stored on.
What two ways can you improve the performance of the database's storage while maintaining the current persistence of the data?
Choose 2 answers
A. Move to an SSD backed instance
B. Move the database to an EBS-Optimized Instance
C. T Use Provisioned IOPs EBS
D. Use the ephemeral storage on an m2 4xiarge Instance Instead
Answer: A,B
Q173. - (Topic 2)
A user is planning to setup notifications on the RDS DB for a snapshot. Which of the below mentioned event categories is not supported by RDS for this snapshot source type?
A. Backup
B. Creation
C. Deletion
D. Restoration
Answer: A
Explanation:
Amazon RDS uses the Amazon Simple Notification Service to provide a notification when an Amazon RDS event occurs. Event categories for a snapshot source type include: Creation, Deletion, and Restoration. The Backup is a part of DB instance source type.
Q174. - (Topic 3)
A user has configured ELB with SSL using a security policy for secure negotiation between the client and load balancer. Which of the below mentioned SSL protocols is not supported by the security policy?
A. TLS 1.3
B. TLS 1.2
C. SSL 2.0
D. SSL 3.0
Answer: A
Explanation:
Elastic Load Balancing uses a Secure Socket Layer (SSL. negotiation configuration which is known as a Security Policy. It is used to negotiate the SSL connections between a client and the load balancer. Elastic Load Balancing supports the following versions of the SSL protocol: TLS 1.2 TLS 1.1 TLS 1.0 SSL 3.0 SSL 2.0
Q175. - (Topic 3)
How can you secure data at rest on an EBS volume?
A. Encrypt the volume using the S3 server-side encryption service.
B. Attach the volume to an instance using EC2's SSL interface.
C. Create an IAM policy that restricts read and write access to the volume.
D. Write the data randomly instead of sequentially.
E. Use an encrypted file system m top of the EBS volume.
Answer: C
Explanation: Reference:
http://docs.aws.amazon.com/IAM/latest/UserGuide/policies_examples.html
Q176. - (Topic 2)
An organization is using cost allocation tags to find the cost distribution of different departments and projects. One of the instances has two separate tags with the key/ value as “InstanceName/HR”, “CostCenter/HR”. What will AWS do in this case?
A. InstanceName is a reserved tag for AWS. Thus, AWS will not allow this tag
B. AWS will not allow the tags as the value is the same for different keys
C. AWS will allow tags but will not show correctly in the cost allocation report due to the same value of the two separate keys
D. AWS will allow both the tags and show properly in the cost distribution report
Answer: D
Explanation:
AWS provides cost allocation tags to categorize and track the AWS costs. When the user applies tags to his AWS resources, AWS generates a cost allocation report as a comma-separated value (CSV file. with the usage and costs aggregated by those tags. Each tag will have a key-value and can be applied to services, such as EC2, S3, RDS, EMR, etc. It is required that the key should be different for each tag. The value can be the same for different keys. In this case since the value is different, AWS will properly show the distribution report with the correct values.
Q177. - (Topic 2)
A user is trying to configure the CloudWatch billing alarm. Which of the below mentioned steps should be
performed by the user for the first time alarm creation in the AWS Account Management section?
A. Enable Receiving Billing Reports
B. Enable Receiving Billing Alerts
C. Enable AWS billing utility
D. Enable CloudWatch Billing Threshold
Answer: B
Explanation:
AWS CloudWatch supports enabling the billing alarm on the total AWS charges. Before the user can create an alarm on the estimated charges, he must enable monitoring of the estimated AWS charges, by selecting the option “Enable receiving billing alerts”. It takes about 15 minutes before the user can view the billing data. The user can then create the alarms.
Q178. - (Topic 3)
A user is trying to setup a security policy for ELB. The user wants ELB to meet the cipher supported by the client by configuring the server order preference in ELB security policy. Which of the below mentioned
preconfigured policies supports this feature?
A. ELBSecurity Policy-2014-01
B. ELBSecurity Policy-2011-08
C. ELBDefault Negotiation Policy
D. ELBSample- OpenSSLDefault Cipher Policy
Answer: A
Explanation:
Elastic Load Balancing uses a Secure Socket Layer (SSL. negotiation configuration which is known as a Security Policy. It is used to negotiate the SSL connections between a client and the load balancer. If the load balancer is configured to support the Server Order Preference, then the load balancer gets to select the first cipher in its list that matches any one of the ciphers in the client's list. When the user verifies the preconfigured policies supported by ELB, the policy “ELBSecurity Policy-2014-01” supports server order preference.
Q179. - (Topic 2)
A user has setup an RDS DB with Oracle. The user wants to get notifications when someone modifies the
security group of that DB. How can the user configure that?
A. It is not possible to get the notifications on a change in the security group
B. Configure SNS to monitor security group changes
C. Configure event notification on the DB security group
D. Configure the CloudWatch alarm on the DB for a change in the security group
Answer: C
Explanation:
Amazon RDS uses the Amazon Simple Notification Service to provide a notification when an Amazon RDS event occurs. These events can be configured for source categories, such as DB instance, DB security group, DB snapshot and DB parameter group. If the user is subscribed to a Configuration Change category for a DB security group, he will be notified when the DB security group is changed.
Q180. - (Topic 2)
An organization has setup consolidated billing with 3 different AWS accounts. Which of the below mentioned advantages will organization receive in terms of the AWS pricing?
A. The consolidated billing does not bring any cost advantage for the organization
B. All AWS accounts will be charged for S3 storage by combining the total storage of each account
C. The EC2 instances of each account will receive a total of 750*3 micro instance hours free
D. The free usage tier for all the 3 accounts will be 3 years and not a single year
Answer: B
Explanation:
AWS consolidated billing enables the organization to consolidate payments for multiple Amazon Web Services (AWS. accounts within a single organization by making a single paying account. For billing purposes, AWS treats all the accounts on the consolidated bill as one account. Some services, such as Amazon EC2 and Amazon S3 have volume pricing tiers across certain usage dimensions that give the user lower prices when he uses the service more.