Ruankao Information System Operations Administrator (Junior) case studies
Ruankao Information System Operations Administrator (Junior) · Put your knowledge to work in context.
The Information System Operations Administrator (信息系统运行管理员) is a junior-level Chinese professional qualification exam administered under the Ruankao (软考) national computer and software proficiency testing system. It targets people who keep systems running day to day: server and operating system operations, network and infrastructure upkeep, database maintenance and backup, security administration, monitoring and fault handling, and IT service processes. The Ruankao Information System Operations Administrator (Junior) case studies are 5 cases and about 5,139 words.
1HR Portal Slowness and a Silent Cron Failure
At 08:10 on a Monday, the monitoring dashboard shows the internal HR portal (Java, Tomcat 9, CentOS 7) on srv-hr-01 is slow. Load average is 14 on a 4-vCPU host; %wa is 38%; the /var partition is 93% full.
985 words, about 5 min2Intermittent Slowness on a Third-Floor Access Switch
Users on the third floor (about 45 workstations, one 48-port access switch SW3-A) report slow and intermittent access to the finance file server on the second floor. Pings from SW3-A to the core switch show an average of 2 ms but spikes to 300-600 ms every 30-40 seconds; no packet loss is reported by users, but SMB copy throughput falls from 90 MB/s to 8 MB/s.
1,027 words, about 5 min3A Destructive DELETE and a Backup Window That Cannot Meet the RPO
FinApp uses MySQL 8.0 on a single 8-core, 32 GB RAM server. The database is 210 GB; the busiest table ledger entry has 140 million rows.
1,070 words, about 5 min4Ransomware on a Sales File Share with 14 Unmanaged Endpoints
At 09:20 on a Tuesday, the service desk receives three calls from the sales department: Excel files on the shared drive fileserver01/sales open as gibberish and have been renamed with a .locked extension. A text file named READ ME.txt asks for payment in Bitcoin.
1,050 words, about 5 min5A Contractor Firewall Change Takes Down ERP at Quarter-End
At 14:05 on the last working day of the quarter, the ERP system (Oracle DB, two application servers behind an F5 load balancer) becomes unreachable for 220 finance users. The service desk logs 90 calls in 10 minutes.
1,007 words, about 5 min