AWS Academy Cloud Architecting Module 11 Answers

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What is caching?

A. A high-speed data storage layer
B. A way to store passwords
C. A global network for content distribution
D. An in-memory database

Ans- A

Which types of data should you cache?

A. Data that can be retrieved quickly with simple queries
B. Dynamically generated web content
C. Static data that is frequently accessed
D. Specialized data that is needed by a subset of users

Ans – C

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What is a benefit of caching?

A. Reduced response latency
B. Load balancing the application
C. Increased application reliability.
D. Decreased costs

Ans – A

What does Amazon CloudFront enable?

A. Bidirectional caching between users and an origin host
B. Multi-tiered and regional caching of content
C. Transactional processing with an in-memory database
D. Automatic creation of a time-to-live value

Ans – B

How does Amazon CloudFront use edge locations?

A. It caches all content from an origin distribution at the edge location, and delivers the content to clients through the fastest edge location.
B. It caches local content at the edge locations. It delivers the cached content to clients through the edge location that requires the fewest network hops to reach those clients.
C. It caches frequently accessed content at the edge locations. It delivers the cached content to clients through the edge location with the lowest latency to those clients.
D. It caches Regional data at Regional edge locations, and delivers the content to clients through their Regional edge locations.

Ans – C

Where is application session data cached when using sticky sessions?

A. Web server
B. Web browser
C. Elastic Load Balancing load balancer
D. Amazon CloudFront

Ans – A

Which statement best describes an efficient way to deliver on-demand streaming content by using Amazon CloudFront?

A. CloudFront does not work with streaming content.
B. A best practice is to create separate origin servers for each Region where you serve streaming content.
C. A best practice is to create distributions for each Region where you server streaming content.
D. A best practice is to create video segments and store them in an Amazon S3 bucket. Then, use CloudFront to cache the segments.

Ans – A or D

What is a Amazon DynamoDB Accelerator (DAX)?

A. A fully managed, high available, in-memory cache for DynamoDB
B. A feature of DynamoDB that automatically adjusts read/write capacity to handle load
C. A fully managed, highly available cache that is backed by DynamoDB
D. A feature of DynamoDB that enables fast lookup of items by using secondary keys

Ans – A

How can an application use Amazon ElastiCache to improve database read performance? (Select TWO).

A. Read data from the database first and write the most frequently read data to ElastiCache.
B. Direct all read requests to the database and configure it to read from ElastiCache when a cache miss occurs.
C. Read data from ElastiCache first and write to ElastiCache when a cache miss occurs.
D. Write data to ElastiCache whenever the application writes to the database.
E. Replicate the database in ElastiCache, and direct all reads to ElastiCache and al writes to the database.

Ans –

Which role does Amazon CloudFront play in protecting against DDos attacks?

A. Routes traffic through edge locations
B. Controls traffic by the source IP addresses of requests
C. Restricts traffic by geography to help block attacks that originate from specific countries
D. Performs deep packet inspection to detect attacks

Ans – A

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