Cost Explorer provides charts and reports for AWS spending. Databases, load balancers, and DNS are different.
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What are AWS Budgets?
Budgets track cost and usage against thresholds and notify when limits are crossed. Invoices, security groups, and storage classes are different.
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What are Savings Plans?
Savings Plans offer lower rates in exchange for a commitment to consistent usage. Engines, VPNs, and CDNs are different.
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What are Reserved Instances?
RIs reserve capacity and reduce costs for predictable workloads. Backups, DNS records, and firewalls are different.
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What are Spot Instances?
Spot Instances provide large discounts for interruptible workloads using spare capacity. Dedicated hosts, databases, and load balancers are different.
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What does an S3 lifecycle policy do?
Lifecycle policies move objects between storage classes or delete them based on rules. Encryption, users, and routing are different.
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What is AWS Compute Optimizer?
Compute Optimizer analyzes usage and recommends instance and resource sizes. Databases, VPNs, and CDNs are different.
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What is AWS Pricing Calculator?
Pricing Calculator estimates monthly costs for planned workloads. Reports, firewalls, and DNS are different.
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What is consolidated billing?
Consolidated billing aggregates usage so volume discounts apply across accounts. Separate payments, deletion, and budgets are different.
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Match each cost control concept to its purpose.
Cost Explorer analyzes spend, Budgets alerts on thresholds, Savings Plans commit usage, and Compute Optimizer advises sizing.
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What is AWS Application Migration Service?
Application Migration Service (MGN) automates server migration to AWS. Engines, DNS, and CDNs are different.
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What is AWS Database Migration Service?
DMS moves data between source and target databases with minimal downtime. Warehouses, caches, and backups are different.
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What is the AWS Schema Conversion Tool?
SCT converts schemas between database engines to support heterogeneous migrations. Transfers, DNS, and firewalls are different.
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What is AWS DataSync?
DataSync automates and accelerates data transfers to and from AWS storage. Databases, CDNs, and VPNs are different.
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What is AWS Snowball?
Snowball devices move large data sets physically when networks are impractical. VMs, databases, and DNS records are different.
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What is AWS Migration Hub?
Migration Hub provides a central view of migration progress. Warehouses, load balancers, and backups are different.
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What is AWS Transfer Family?
Transfer Family provides managed file transfer protocols to Amazon S3 and EFS. Database tools, DNS, and CDNs are different.
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What is a heterogeneous migration?
Heterogeneous migrations change the database engine and typically use SCT. Same-engine, physical, and DNS changes are different.
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What is cutover?
Cutover redirects users and workloads to the migrated environment. Backups, scans, and queries are not cutover.
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Match each migration service to its purpose.
MGN migrates servers, DMS migrates databases, SCT converts schemas, and Snowball transfers data physically.
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What is a multi-AZ deployment?
Multi-AZ deployments tolerate Availability Zone failures. Single-zone, no backup, and log deletion reduce resilience.
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What is RDS Multi-AZ?
RDS Multi-AZ maintains a synchronous standby for automatic failover. Read replicas scale reads, snapshots back up, and caches speed reads.
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What is Route 53 failover routing?
Failover routing uses health checks to switch traffic when the primary endpoint fails. Latency, weighted, and geolocation are different policies.
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What is AWS Backup?
AWS Backup centralizes backup policies and monitoring for supported services. Databases, DNS, and firewalls are different.
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What are RTO and RPO?
RTO measures acceptable downtime and RPO measures acceptable data loss. Indexes, routes, and security rules are different.
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What is cross-region replication?
Cross-region replication protects data by copying it to another Region. Same-region copies, deletion, and users do not provide regional DR.
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What is AWS Elastic Disaster Recovery?
Elastic Disaster Recovery continuously replicates servers for fast failover. Backup vaults, DNS zones, and CDNs are different.
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What is AWS Global Accelerator used for in reliability?
Global Accelerator uses health checks and static anycast IPs to shift traffic from unhealthy endpoints. Storage, DNS-only, and filtering are different.
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What is a health check?
Health checks validate endpoint availability for routing and scaling decisions. Backups, firewall rules, and storage classes are different.
ข้อ 50
Match each reliability concept to its purpose.
Multi-AZ provides zone resilience, RDS Multi-AZ handles database failover, Route 53 failover handles DNS, and AWS Backup centralizes backups.
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What is an Auto Scaling group?
Auto Scaling groups maintain desired capacity and scale with demand. DNS records, databases, and firewalls are different.
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What is an Application Load Balancer?
ALB routes HTTP and HTTPS traffic with path and host rules at layer 7. NLB is layer 4, and DNS or databases are different.
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What is a Network Load Balancer?
NLB handles TCP and UDP traffic at layer 4 with high throughput. WAF, DNS zones, and caches are different.
ข้อ 54
What is Amazon CloudFront?
CloudFront caches content at edge locations for lower latency. Databases, VPNs, and firewalls are different.
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What is Amazon ElastiCache?
ElastiCache provides Redis and Memcached caching. Relational databases, warehouses, and DNS are different.
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What is DynamoDB Accelerator?
DAX speeds DynamoDB reads with an in-memory cache. Databases, backups, and firewalls are different.
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What is DynamoDB on-demand capacity?
On-demand mode adjusts read and write capacity instantly. Fixed capacity, relational databases, and caches are different.
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What is Amazon SQS used for?
SQS decouples producers and consumers with durable queues. File storage, DNS, and filtering are different.
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What is AWS Lambda?
Lambda runs code without provisioning servers and scales with events. VMs, databases, and CDNs are different.
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Match each scaling concept to its purpose.
Auto Scaling adjusts instances, ALB routes HTTP, CloudFront caches at the edge, and SQS decouples messages.