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Exam AWS Certified Database - Specialty topic 1 question 235 discussion

Exam question from Amazon's AWS Certified Database - Specialty
Question #: 235
Topic #: 1
[All AWS Certified Database - Specialty Questions]

A company wants to improve its ecommerce website on AWS. A database specialist decides to add Amazon ElastiCache for Redis in the implementation stack to ease the workload off the database and shorten the website response times. The database specialist must also ensure the ecommerce website is highly available within the company's AWS Region.
How should the database specialist deploy ElastiCache to meet this requirement?

  • A. Launch an ElastiCache for Redis cluster using the AWS CLI with the -cluster-enabled switch.
  • B. Launch an ElastiCache for Redis cluster and select read replicas in different Availability Zones.
  • C. Launch two ElastiCache for Redis clusters in two different Availability Zones. Configure Redis streams to replicate the cache from the primary cluster to another.
  • D. Launch an ElastiCache cluster in the primary Availability Zone and restore the cluster's snapshot to a different Availability Zone during disaster recovery.
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Suggested Answer: B 🗳️
by mbar94 at Sept. 7, 2022, 10:59 a.m.
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Pranava_GCP
1 year, 7 months ago
Selected Answer: B
B. read replicas in multi-AZ. https://docs.aws.amazon.com/AmazonElastiCache/latest/red-ug/WhatIs.html
upvoted 1 times
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jpj
2 years, 1 month ago
Selected Answer: B
B. Launch an ElastiCache for Redis cluster and select read replicas in different Availability Zones. By launching an ElastiCache for Redis cluster with read replicas in different Availability Zones, the database specialist can ensure high availability of the ecommerce website within the company's AWS Region. ElastiCache automatically provisions and maintains the read replicas in different Availability Zones to enable faster read access and to provide high availability of the cache. This architecture helps to reduce latency and improve website response times, while also ensuring that the ecommerce website is highly available in case of a failure in one Availability Zone.
upvoted 3 times
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examineme
2 years, 4 months ago
Selected Answer: B
B look great
upvoted 2 times
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Changwha
2 years, 6 months ago
Selected Answer: B
You can enable Multi-AZ only on Redis (cluster mode disabled) clusters that have at least one available read replica. Clusters without read replicas do not provide high availability or fault tolerance.
upvoted 1 times
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Zimboguru
2 years, 6 months ago
B is correct
upvoted 2 times
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mbar94
2 years, 7 months ago
Selected Answer: B
It's B - https://docs.aws.amazon.com/AmazonElastiCache/latest/red-ug/AutoFailover.html
upvoted 3 times
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