http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
"Covers all five objective domains, with five full-length chapter tests plus a bonus practice exam for a total of 1,000 sample questions"--Page 4 of cover.
Hardware and system configuration -- System operations and maintenance -- Security -- Linux troubleshooting and diagnostics -- Automation and scripting -- Practice exam -- Appendix: Answers and explanations.