System Architecture & Design Flashcards
7 cards from real DIS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 System Architecture & Design flashcards as text
In a high-availability digital imaging system, what is the purpose of a warm standby configuration?
Answer: A standby server running and synchronized with the primary, capable of taking over within minutes
A warm standby is a live server continuously synced with the primary that can assume traffic with minimal downtime, unlike a cold standby that requires restoration.
Which aspect ratio and resolution combination is the ISO standard for A4 document scanning at 300 DPI, commonly used in digital imaging archival workflows?
Answer: 2480 × 3508 pixels
An A4 page (8.27 × 11.69 inches) scanned at 300 DPI produces 2480 × 3508 pixels, the standard for document archiving.
In a digital imaging system, which design pattern is most appropriate for converting between different image formats (TIFF, JPEG, PNG, WebP) without coupling the conversion logic to the rest of the application?
Answer: Strategy pattern with interchangeable codec implementations
The Strategy pattern allows different format conversion algorithms to be swapped at runtime without modifying the client code, keeping the system extensible.
A DIS professional must choose between on-premises and cloud infrastructure for a high-volume image rendering pipeline. Which factor most strongly favors a cloud deployment?
Answer: Workloads are highly variable with large periodic spikes in rendering demand
Cloud infrastructure is most advantageous for variable workloads with spikes because you can scale compute elastically rather than over-provisioning for peak capacity.
When implementing a digital asset management system, what is the primary purpose of defining a controlled vocabulary for image metadata?
Answer: To enforce consistent terminology for searchable tags, improving retrieval accuracy
A controlled vocabulary standardizes the terms used for keywording, preventing synonym inconsistencies and ensuring that searches return all relevant assets.
In the context of digital imaging system security, what is the principle of least privilege as applied to user access control?
Answer: Users are granted only the minimum permissions required to perform their specific job functions
Least privilege limits each user to only the permissions their role requires, reducing the attack surface and minimizing damage from compromised accounts.
Which technology is used in a digital imaging system to automatically detect and crop the most visually significant region of an image when generating thumbnails of varying aspect ratios?
Answer: Smart cropping using saliency detection or face detection algorithms
Smart cropping uses saliency detection or face detection to identify the subject of interest and keep it centered when generating thumbnails at different aspect ratios.