AWS Certified Developer - Associate Questions and Answers (Dumps and Practice Questions)
Question : Which of the following are correct statements with policy evaluation logic in AWS Identity
and Access Management? Choose 2 answers
A. By default, all requests are denied
B. An explicit allow overrides an explicit deny
C. An explicit allow overrides default deny.
D. An explicit deny does not override an explicit allow
E. By default, all request are allowed
Answer: A,C
1. A,C
2. C,E
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4. D,E
5. E,F
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Explanation: Determining Whether a Request is Allowed or Denied
When a request is made, the AWS service decides whether a given request should be allowed or denied. The evaluation logic follows these rules:
By default, all requests are denied. (In general, requests made using the account credentials for resources in the account are always allowed.)
An explicit allow overrides this default.
An explicit deny overrides any allows.
The order in which the policies are evaluated has no effect on the outcome of the evaluation. All policies are evaluated, and the result is always that the request is either allowed or denied.
Question : Which of the following are valid arguments for an SNS Publish request? Choose answers
A. TopicArn
B. Subject
C. Destination
D. Format
E. Message
F. Language
1. A,B,C
2. A,C,E
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4. C,D,E
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Explanation: SNS Publish : Sends a message to all of a topic's subscribed endpoints. When a messageId is returned, the message has been saved and Amazon SNS will attempt to deliver it to the topic's subscribers shortly. The format of the outgoing message to each subscribed endpoint depends on the notification protocol selected.
To use the Publish action for sending a message to a mobile endpoint, such as an app on a Kindle device or mobile phone, you must specify the EndpointArn. The EndpointArn is returned when making a call with the CreatePlatformEndpoint action. The second example below shows a request and response for publishing to a mobile endpoint.
Request Parameters
Message
The message you want to send to the topic.
MessageAttributes.entry.N
Message attributes for Publish action.
MessageStructure
Set MessageStructure to json if you want to send a different message for each protocol. For example, using one publish action, you can send a short message to your SMS subscribers and a longer message to your email subscribers.
Subject
Optional parameter to be used as the "Subject" line when the message is delivered to email endpoints. This field will also be included, if present, in the standard JSON messages delivered to other endpoints.
TargetArn
Either TopicArn or EndpointArn, but not both.
TopicArn
The topic you want to publish to.
Question :
Select the correct statement for Amazon VPC
1. When you create a VPC, it automatically create an DHCP option "domain-name-servers=AmazonProvidedDNS" and associate it with the VPC.
2. DHCP does not automatically associates the DNS Server, for the instances that need to communicate over the VPC's internet gateway.
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4. Only 1 and 3 are correct
5. All 1,2 and 3 are correct.
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When you create a VPC, we automatically create a set of DHCP options and associate them with the VPC. This set includes only a single option: domain-name-servers=AmazonProvidedDNS. This is an Amazon DNS server, and this option enables DNS for instances that need to communicate over the VPC's Internet gateway. The string AmazonProvidedDNS maps to a DNS server running on a reserved IP address at the base of the VPC network range "plus two". For example, the DNS Server on a 10.0.0.0/16 network is located at 10.0.0.2.
After you create a set of DHCP options, you can't modify them. If you want your VPC to use a different set of DHCP options, you must create a new set and associate them with your VPC. You can also set up your VPC to use no DHCP options at all.
You can have multiple sets of DHCP options, but you can associate only one set of DHCP options with a VPC at a time. If you delete a VPC, the DHCP options set associated with the VPC are also deleted.
After you associate a new set of DHCP options with a VPC, any existing instances and all new instances that you launch in the VPC use these options. You don't need to restart or relaunch the instances. They automatically pick up the changes within a few hours, depending on how frequently the instance renews its DHCP lease. If you want, you can explicitly renew the lease using the operating system on the instance.
Related Questions
Question : Which of the following is an example of a good DynamoDB hash key schema for provisioned throughput efficiency?
1. User ID, where the application has many different users.
2. Status Code where most status codes are the same
3. Device ID, where one is by far more popular than all the others.
4. Game Type, where there are three possible game types
Question : When a Simple Queue Service message triggers a task that takes minutes to complete,
which process below will result in successful processing of the message and remove it
from the queue while minimizing the chances of duplicate processing?
1. Retrieve the message with an increased visibility timeout, process the message, delete the message from the queue
2. Retrieve the message with an increased visibility timeout, delete the message from the queue, process the message
3. Retrieve the message with increased DelaySeconds, process the message, delete the message from the queue
4. Retrieve the message with increased DelaySeconds, delete the message from the queue, process the message
Question :
If an AMI has a product code, you can't make it
1. Private
2. Public
3. Shareable
4. There is no attribute like product code on AMI
Question : Company B has many users updating the same table. At times it is not uncommon for multiple
users to update the same item and attribute of an item at the same time. If user A calls an item in a
table to update an attribute at the same time as user B and user B updates the table first,
what can we deploy in DynamoDB to ensure User A is not updating an item that was updated since User A's table read?
1. Atomic Counters
2. Extra API read calls to determine if the data was updated before the update call is made
3. Conditional Writes
4. Eventual Consistency
Question : How many global secondary indexes are allowed per table?
1. 5
2. 10
3. 15
4. 1
Question : Games-R-Us is launching a new game app for mobile devices. Users will log into the game
using their existing Facebook account and the game will record player data and scoring
information directly to a DynamoDB table.
What is the most secure approach for signing requests to the DynamoDB API?
1. Create an IAM user with access credentials that are distributed with the mobile app to sign the requests
2. Distribute the AWS root account access credentials with the mobile app to sign the requests
3. Request temporary security credentials using web identity federation to sign the requests
4. Establish cross account access between the mobile app and the DynamoDB table to sign the requests