Which DynamoDB operation is the most read$-$intensive?

Group of answer choices

Update

Scan

Write

Query

Flag question: Question $2$

Question $21$ pts

Which of the following is a valid CIDR for a VPC or subnet?

Group of answer choices

$10\mathrm{.}0\mathrm{.}0\mathrm{.}0/28$

$10\mathrm{.}0\mathrm{.}0\mathrm{.}0/8$

$10\mathrm{.}0\mathrm{.}0\mathrm{.}0/15$

$10\mathrm{.}0\mathrm{.}0\mathrm{.}0/29$

Flag question: Question $3$

Question $31$ pts

Which of the following statements is true regarding a DynamoDB table?

Group of answer choices

Items in a table don$$t have to have all the same attributes.

When you create a table, you must define the maximum number of items that it can store.

Items in a table can have duplicate values for the primary key.

It can store only one data type.

Flag question: Question $4$

Question $41$ pts

What are two differences between a virtual private network $($VPN$)$ connection and a Direct Connect connection? $($Choose two.$)$

Group of answer choices

A VPN connection uses the Internet for transport.

A Direct Connect connection offers predictable latency because it doesn$$t traverse the Internet.

A VPN connection requires proprietary hardware.

A Direct Connect connection uses AES $128-$ or $256-$bit encryption.

Flag question: Question $5$

Question $51$ pts

Which configuration parameters can you adjust to improve write performance against a DynamoDB table? $($Choose two.$)$

Group of answer choices

Decrease write capacity units.

Increase read capacity units.

Increase write capacity units $($WCU$).$

Enable DynamoDB Auto Scaling.

Decrease read capacity units $($RCU$).$

Flag question: Question $6$

Question $61$ pts

What is the minimum monthly availability for DynamoDB in a single region?

Group of answer choices

$99\mathrm{.}99$ percent

$99\mathrm{.}0$ percent

$99\mathrm{.}9$ percent

$99\mathrm{.}95$ percent

Flag question: Question $7$

Question $71$ pts

Which of the following are true of a default VPC$?($Choose two.$)$

Group of answer choices

A default VPC spans multiple regions.

AWS creates a default VPC in each availability zone.

By default, each default VPC is available to one AWS account.

AWS creates a default VPC in each region.

Flag question: Question $8$

Question $81$ pts

Which of the following are true regarding subnets? $($Choose two.$)$

Group of answer choices

A subnet must have a CIDR that$$s a subset of the CIDR of the VPC in which it resides.

A subnet spans one availability zone.

A VPC must have at least two subnets.

A subnet spans multiple availability zones.

Flag question: Question $9$

Question $91$ pts

What$$s the difference between a security group and a network access control list $($NACL$)?($Choose two.$)$

Group of answer choices

A network access control list operates at the subnet level.

A security group operates at the instance level.

A network access control list operates at the instance level.

A security group operates at the subnet level.

Flag question: Question $10$

Question $101$ pts

Which of the following are true about registering a domain name with Route $53?($Choose two.$)$

Group of answer choices

The registrar you use to register a domain name determines who will host DNS for that domain.

Route $53$ creates a private hosted zone for the domain.

Route $53$ creates a public hosted zone for the domain.

You can register a domain name for a term of up to $10$ years.

Flag question: Question $11$

Question $111$ pts

Which RDS database engine offers automatically expanding database storage up to $64$ TB$?$

Group of answer choices

Microsoft SQL Server

Amazon Athena

Amazon Aurora

Oracle

Flag question: Question $12$

Question $121$ pts

Which of the following Relational Database Service $($RDS$)$ features can help you achieve a monthly availability of $99\mathrm{.}95$ percent?

Group of answer choices

Horizontal scaling

Point$-$in$-$time recovery

Read replicas

Multi$-$AZ

Flag question: Question $13$

Question $131$ pts

Which of the following is true of a VPC peering connection?

Group of answer choices

It$$s a private connection between two VPCs$.$

It$$s a private connection that connects more than three VPCs$.$

It$$s a public connection between two VPCs$.$

It$$s a virtual private network $($VPN$)$ connection between two VPCs$.$

Flag question: Question $14$

Question $141$ pts

Which type of Redshift node uses magnetic storage?

Group of answer choices

Dense memory

Dense storage

Dense compute

Cost$-$optimized

Flag question: Question $15$

Question $151$ pts

What is true regarding a DynamoDB partition? $($Choose two.$)$

Group of answer choices

It$$s replicated across multiple availability zones.

It$$s backed by solid$-$state drives.

It$$s stored within a table.

It$$s a way to uniquely identify an item in a table.

Flag question: Question $16$

Question $161$ pts

Which of the following is true of a new security group?

Group of answer choices

It contains an inbound rule denying access from any IP address.

It contains an outbound rule allowing access to any IP address.

It contains an inbound rule denying access from public IP addresses.

It contains an outbound rule denying access to public IP addresses.

It contains an inbound rule allowing access from any IP address.