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300-420
DiffServ Trust Boundary: Which Ports Need Explicit Trust?
This Cisco 300-420 QoS item tests the DiffServ trust boundary; the ports requiring explicit trust are F and G (option B), because trust is evaluated on ingress traffic after access-layer
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300-420
Inter-VRF Route Leaking with PBR
Learn how to enable inter-VRF routing between the global table and a VRF using Policy-Based Routing (PBR) with the set global statement, avoiding BGP or static routing.
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AIF-C01
What Happens in the Deployment Phase of the GenAI Lifecycle
This AIF-C01 question tests the deployment stage of the generative AI model lifecycle, where the practitioner makes the trained model available to end users in a live environment (option C).
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AIF-C01
Hosting an ML model with no infrastructure to manage
This AIF-C01 question tests how to serve real-time predictions from a deployed model with no infrastructure management.
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AIP-C01
Automating Canary Deployments for Amazon Bedrock Models
Amazon Bedrock lacks native weighted routing for canary deployments, requiring an automated orchestration layer like AWS Step Functions to shift traffic and evaluate CloudWatch metrics for zero-touch
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SOA-C03
S3 Event Notifications to SQS FIFO Queue
This solution demonstrates how to use Amazon S3 event notifications with the FIFO delivery option to directly send ordered messages to an Amazon SQS FIFO queue, minimizing operational overhead.
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SOA-C03
Lambda Provisioned Concurrency for Weekday Attendance Peaks
This SOA-C03 scenario tests Lambda cold-start latency during a predictable weekday attendance spike, and the correct fix is provisioned concurrency with scheduled auto scaling (A).
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AIP-C01
Route Bedrock Requests to Provisioned Throughput via the Model ARN
This AIP-C01 scenario tests how Amazon Bedrock routes traffic between on-demand and provisioned endpoints.
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DEA-C01
Apache Iceberg Automatic Compaction for Small Files
Apache Iceberg handles the small-files problem in Amazon S3 by using table properties to enable automatic compaction based on file size and count thresholds.
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DEA-C01
AWS Glue Catalog Views with Lake Formation and CloudTrail
This question tests implementing a data mesh architecture using AWS Glue Data Catalog multi-dialect views for cross-engine analytics, Lake Formation for PII restriction, and CloudTrail for auditing.
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PCA
Which Database Fits the Meeting-Room Sensor Data?
This PCA question asks which database suits 1,000 meeting-room motion sensors streaming discrete fields that analysts must combine with owner and office data. The answer is a relational database (C).
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PCA
Fixing BigQuery connection errors from a Compute Engine VM
A Python script on Compute Engine failing to connect to BigQuery needs proper identity and authorization, not a new library or CLI tool.
Most discussed questions
Community debate, expert analysis & FAQs-
PCA
Surviving a Zone Outage With SQL Server on GCP
This PCA question tests zero-downtime SQL Server availability across GCP zones, where Always On Availability Groups with nodes in different zones (D) is the correct design over Cloud SQL HA (A).
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AZ-104
Attach a Data Disk to Another VM with Minimum Downtime
When moving a data disk between Azure VMs, the fastest path is a hot detach: removing the disk from its current VM does not require powering off either machine, so both stay online. The correct first action is to detach the data disk, then attach it to the target VM.
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AZ-104
Force Immediate Azure AD Connect Sync of New User
This AZ-104 scenario asks whether running Start-ADSyncSyncCycle -PolicyType Initial will immediately replicate a newly created on-premises Active Directory user to the weyland.com Azure AD tenant. The page establishes that the answer is No, because only -PolicyType Delta delivers the urgent, targeted sync cycle the requirement calls for.
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PCA
Why Performance Bugs Appear Only in Production
This PCA question tests how to fix test and deployment procedures when performance defects escape to production. It establishes that raising load in test and staging environments (option C) reproduces production conditions and catches performance bugs before release.
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ACE
Connecting to SQL Server on Compute Engine via RDP
This question addresses the most efficient method to connect to a Windows instance running SQL Server on Google Cloud Platform using Remote Desktop Protocol (RDP). It clarifies that while the GCP Console provides an RDP button, it does not support direct credential entry for immediate session establishment.
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SAA-C03
Migrating 70 TB On-Premises NFS Data to Amazon S3
This question tests choosing the optimal data migration method to Amazon S3 for 70 TB of static video files when speed and minimal network bandwidth are required. AWS Snowball Edge is the correct answer because it physically transports data off-premises, avoiding network bandwidth entirely.