Welding Procedures & Techniques Flashcards
7 cards from real Architecting on AWS Certification practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Welding Procedures & Techniques flashcards as text
A company runs a batch job that processes data for 6 hours every night and can tolerate interruption. Which EC2 purchasing option minimizes cost?
Answer: Spot Instances
Spot Instances offer up to 90% discount compared to On-Demand and are ideal for fault-tolerant batch workloads.
Which S3 feature automatically moves objects to cheaper storage classes based on access patterns without predefined rules?
Answer: S3 Intelligent-Tiering
S3 Intelligent-Tiering monitors access and moves objects between tiers automatically, optimizing cost without retrieval fees.
An architect wants to reduce NAT Gateway data-processing costs for EC2 instances that frequently access S3. What is the best solution?
Answer: Create a VPC Gateway Endpoint for S3
A VPC Gateway Endpoint for S3 routes traffic over AWS's private network, bypassing the NAT Gateway and eliminating its cost.
Which AWS Compute Optimizer metric indicates that an EC2 instance is over-provisioned and should be downsized?
Answer: Consistently low CPU and memory utilization over the lookback period
Consistently low CPU and memory utilization signals that the instance is larger than the workload requires.
A team wants to share a single Amazon RDS instance across multiple development environments to save cost. What is a key risk of this approach?
Answer: A noisy workload in one environment can degrade performance for all others
Shared compute resources mean one environment's heavy queries can starve CPU and I/O for all other environments.
What AWS feature lets you set a monthly cost threshold and receive an email notification when projected spend exceeds it?
Answer: AWS Budgets alert
AWS Budgets allows you to set cost or usage thresholds and sends alerts via SNS or email when they are breached.
Which pricing model offers the highest discount on AWS Lambda compared to paying per invocation at on-demand rates?
Answer: Lambda Compute Savings Plans
Compute Savings Plans cover Lambda compute usage and provide discounts up to 17% compared to on-demand rates.