Free AWS-Certified-Developer-Associate Exam Dumps

Question 86

In regard to DynamoDB, which of the following statements is correct?

A. An Item should have at least two value sets, a primary key and another attribute.
B. An Item can have more than one attributes.
C. A primary key should be single-valued.
D. An attribute can have one or several other attribute

Correct Answer:B
In Amazon DynamoDB, a database is a collection of tables. A table is a collection of items and each item
is a collection of attributes.
Reference: http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DataModeI.html

Question 87

A user has created a new raw EBS volume. The user mounts the volume on the instance to which it is attached. Which of the below mentioned options is a required step before the user can mount the volume?

A. Run a cyclic check on the device for data consistency
B. Create a file system of the volume
C. No step is require
D. The user can directly mount the device
E. Resize the volume as per the original snapshot size

Correct Answer:B
When a user is trying to mount a blank EBS volume, it is required that the user first creates a file system within the volume.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-using-volumes.htmI

Question 88

In DynamoDB, if you create a table and request 10 units of write capacity and 200 units of read capacity of provisioned throughput, how much would you be charged in US East (Northern Virginia) Region?

A. $0.05 per hour
B. $0.10 per hour
C. $0.03 per hour
D. $0.15 per hour

Correct Answer:A
To understand pricing in DynamoDB, consider the following example. If you create a table and request 10 units of write capacity and 200 units of read capacity of provisioned throughput, you would be charged:
$0.01 + (4 x $0.01) = $0.05 per hour
Reference: http://aws.amazon.com/dynamodb/pricing/

Question 89

A user has configured ELB with two instances running in separate AZs of the same region? Which of the below mentioned statements is true?

A. Nlulti AZ instances will provide HA with ELB
B. lVIuIti AZ instances are not possible with a single ELB
C. Nlulti AZ instances will provide scalability with ELB
D. The user can achieve both HA and scalability with ELB

Correct Answer:A
If a user is running two instances in separate AZs, it will provide HA with ELB since ELB will automatically stop routing the traffic to unhealthy instances and send it to healthy instances only.

Question 90

A user wants to configure AutoScaIing which scales up when the CPU utilization is above 70% and scales down when the CPU utilization is below 30%. How can the user configure AutoScaIing for the above mentioned condition?

A. Use AutoScaIing with a schedule
B. Configure ELB to notify AutoScaIing on load increase or decrease
C. Use dynamic AutoScaIing with a policy
D. Use AutoScaIing by manually modifying the desired capacity during a condition

Correct Answer:C
The user can configure the AutoScaIing group to automatically scale up and then scale down based on the specified conditions. To configure this, the user must setup policies which will get triggered by the C|oudWatch alarms.
Reference:
http://docs.aws.amazon.com/AutoScaling/latest/DeveIoperGuide/as-scaIe-based-on-demand.html