Ruankao System Architect (Senior) case studies
Ruankao System Architect (Senior) · Put your knowledge to work in context.
This independent study page provides practice for Ruankao System Architect (Senior). Its editorial learning areas include Computer architecture, logic and data representation; Operating systems, translation and concurrency; Requirements, design, testing and architecture trade-offs; Middleware, distributed transactions and architecture evaluation; Secure development, review and software supply chain; Security foundations, governance and Chinese context; Identity, access and cryptographic protection; Data, Databases, and Information Retrieval; Engineering calculations, alternatives and technical evidence; Project scope, scheduling and earned-value models. The Ruankao System Architect (Senior) case studies are 6 cases and about 2,454 words.
1The Memory Hierarchy Upgrade Committee
A high school robotics team runs a simulation on 40 single-board computers. Each board has a 32 KB L 1 cache with a 1-cycle hit time, a unified L 2 cache with a 10-cycle hit time, and 100-cycle main memory.
633 words, about 3 min2An authenticated firmware image still needs a recovery plan
A fictional device supports two firmware image slots. Its bootloader can verify a signed image before selecting a slot, and an approved update design preserves the previous image until a new version completes defined health checks.
193 words, under 1 min3A pipeline that protects the artifact and the secret
A fictional team builds a release candidate, tests it and then rebuilds from the same source branch during production deployment. Its dependency ranges are not locked, so the second build can obtain different packages.
223 words, about 1 min4The Attendance App Breach
A district's attendance web app has 12,000 student and staff accounts. Passwords are stored as unsalted SHA-256 hashes.
571 words, about 3 min5SaaS access after a role change
A fictional organization uses a managed collaboration service for internal planning documents. The provider maintains the application and underlying servers, while the organization configures users, groups and sharing settings.
221 words, about 1 min6The Slow Catalog Query
A public library's catalog database has 2.4 million rows in a table with columns id, title, author, year, subject, and checked out. The web catalog runs this query about 40 times per second: SELECT id, title FROM books WHERE author = ?
613 words, about 3 min