AWS Certified Developer - Associate Questions and Answers (Dumps and Practice Questions)

Question : In DynamoDB, ______ is a collection of attributes. Each attribute has a name and a value. An attribute value can be a number, a string, a binary, or a set of any of these types.

1. An Item
2. A row
3. A colum
4. A table

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Explanation: In DynamoDB, an item is a collection of attributes. Each attribute has a name and a value. An attribute value can be a number, a string, a binary, or a set of any of these types.

DynamoDB provides APIs to read and write items. For these operations, you need to specify the items and attributes that you want to work with. When you write an item, you can specify one or more conditional expressions that must evaluate to true. For example, you might want the write to succeed only if an item with the same key does not already exist.




Question : To read an item from a DynamoDB table, use the __________ operation. You must provide the name of the table,
along with the primary key of the item you want.


1. PullItem
2. ReadItem
3. GetItem
4. FetchItem

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To read an item from a DynamoDB table, use the GetItem operation. You must provide the name of the table, along with the primary key of the item you want.

You need to specify the entire primary key, not just part of it. For example, if a table has a hash and range type primary key, you must supply a value for the hash attribute and a value for the range attribute.

The following are the default behaviors for GetItem:

GetItem performs an eventually consistent read.

GetItem returns all of the item's attributes.

GetItem does not return any information about how many provisioned capacity units it consumes.

You can override these defaults using GetItem parameters.




Question : Which of the following is correct operation for DynamoDB

1. PutItem
2. UpdateItem
3. DeleteItem
4. 1 and 2 Only
5. 1,2 and 3

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To create, update, and delete items in a DynamoDB table, use the following operations:

PutItem - creates a new item. If an item with the same key already exists in the table, it is replaced with the new item. You must provide the table name and the item that you want to write.

UpdateItem - if the item does not already exist, this operation creates a new item; otherwise, it modifies an existing item's attributes. You must specify the table name and the key of the item you want to modify. For each of the attributes that you want to update, you must provide new values for them.

DeleteItem - deletes an item. You must specify the table name and the key of the item you want to delete.

For each of these operations, you need to specify the entire primary key, not just part of it. For example, if a table has a hash and range type primary key, you must supply a value for the hash attribute and a value for the range attribute.

If you want to avoid accidentally overwriting or deleting an existing item, you can use a conditional expression with any of these operations. A conditional expression lets you check whether a condition is true (such as an item already existing in the table) before the operation can proceed. For more information, see Conditional Writes.

In some cases, you might want DynamoDB to display certain attribute values before or after you modify them. For example, with an UpdateItem operation, you could request that attribute values be returned as they appeared before the update occurs. PutItem, UpdateItem, and DeleteItem have a ReturnValues parameter, which you can use to return the attribute values before or after they are modified.

Related Questions

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Question : Which of the following are valid SNS delivery transports? Choose answers
A. HTTP
B. UDP
C. SMS
D. DynamoDB
E. Named Pipes


1. A,B
2. A,C
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4. D,E
5. A,E



Question : Which API call would best be used to describe an Amazon Machine Image?

1. DescribeImage
2. ami-describe-image
3. Access Mostly Uused Products by 50000+ Subscribers
4. ami-describe-images



Question : Which API call occurs in the final process of creating an AMI?


1. CreateImage
2. RegisterImage
3. Access Mostly Uused Products by 50000+ Subscribers
4. ami-register-image




Question : You attempt to store an object in the US-STANDARD region in Amazon S, and receive a
confirmation that it has been successfully stored. You then immediately make another API
call and attempt to read this object. S3 tells you that the object does not exist
What could explain this behavior?

1. US-STANDARD uses eventual consistency and it can take time for an object to be readable in a bucket
2. Objects in Amazon S3 do not become visible until they are replicated to a second region.
3. Access Mostly Uused Products by 50000+ Subscribers
4. You exceeded the bucket object limit, and once this limit is raised the object will be visible.




Question : A VPC subnet can have multiple route tables.



1. True
2. False



Question : Which of the following platforms are supported by Elastic Beanstalk? Choose answers
1. Apache Tomcat
2. .NET
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4. Oracle JBoss
5. Jetty


1. 1,2
2. 2,3
3. Access Mostly Uused Products by 50000+ Subscribers
4. 1,4
5. 4,5