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
An application experiences database bottlenecks due to read-heavy traffic. Which approach offloads reads from the primary RDS instance?
Answer: Add RDS Read Replicas and direct read traffic to them
Read Replicas serve read queries from a copy of the database, reducing load on the primary writer instance.
A web application needs to serve static assets globally with the lowest possible latency. Which combination is optimal?
Answer: S3 as origin with Amazon CloudFront distribution
CloudFront caches S3 objects at 400+ edge locations worldwide, delivering assets to users from the nearest point of presence.
An application requires session state to be shared across multiple EC2 instances behind a load balancer without sticky sessions. What is the recommended approach?
Answer: Use Amazon ElastiCache (Redis) to store session state centrally
ElastiCache Redis provides a fast, centralized session store accessible by all instances, enabling stateless scaling.
Which AWS Auto Scaling policy type scales based on a predictable, time-based traffic pattern such as business hours?
Answer: Scheduled Scaling
Scheduled Scaling lets you pre-define scale-out and scale-in actions at specific times to match known traffic patterns.
A microservices application has one slow service that causes cascading failures across other services. Which pattern prevents this?
Answer: Circuit Breaker pattern implemented in each service client
A circuit breaker stops sending requests to a failing service, giving it time to recover and preventing cascading failures.
Which Amazon CloudWatch feature allows you to detect unusual spending or API call volume automatically without setting manual thresholds?
Answer: CloudWatch Anomaly Detection
CloudWatch Anomaly Detection uses ML to establish a baseline and alert when metrics deviate unexpectedly.
An architect wants to ensure an Aurora cluster can handle a sudden 10x traffic spike. Which Aurora feature enables instant read capacity scaling?
Answer: Aurora Auto Scaling for Read Replicas
Aurora Auto Scaling automatically adds or removes Read Replicas based on CPU or connection metrics to handle traffic spikes.