Part 2 — Answer key

Compare your answers after you have finished Part 1.

1. In an entry-level it quiz, you see a question asking which device forwards packets between different networks. Which component is it referring to?
   Router
2. An operating system is responsible for managing both hardware resources and software processes on a computer.
   True
3. You are configuring a shared folder for interns so they can read onboarding documents but must not modify or delete them. For this kind of it test scenario, what is the most appropriate permission strategy?
   Create an interns group and assign Read access only
4. During an it quiz on SQL basics, you are asked which command removes rows that meet a specific condition from a table. Which command should you choose?
   DELETE
5. Using HTTP instead of HTTPS is acceptable for transmitting login credentials as long as the internal network is trusted.
   False
6. A remote employee can resolve the hostname of an internal server, but ping to that host times out while other internal hosts respond normally. What is the most likely cause?
   Firewall blocking ICMP to that specific host
7. Your company needs highly durable storage for large media files with minimal management effort, and this use case appears in an i t quiz on cloud storage patterns. Which type of cloud storage service is most appropriate?
   Object storage service
8. Your team is troubleshooting an internal web app that users report as slow to load. You suspect a network path problem. Which tools are most appropriate to diagnose network latency and routing issues? Select all that apply.
   Packet sniffer; traceroute; ping
9. You are working on a feature branch named feature-login and want to switch your local Git workspace to that branch to run an it test suite. Which command should you run?
   git checkout feature-login
10. Your company wants to deploy custom applications without managing servers or operating systems, and this scenario appears in an it quiz about cloud models. Which cloud service model best fits this need?
    Platform as a Service (PaaS)
11. A user reports they cannot reach a specific internal website, while other sites work. Arrange the following troubleshooting steps in the most logical order.
    Correct order: Verify the user's basic network connectivity → Check DNS resolution for the problematic site → Test connectivity to the site host using a network utility → Review firewall or proxy rules affecting that site
12. A report query against a large orders table is running slowly during your regular it test cycle. Which actions are likely to improve query performance? Select all that apply.
    Replace SELECT * with only the columns needed; Create an index on columns used in WHERE filters; Review and analyze the database query plan
13. In a typical public cloud environment, using infrastructure-as-code tools helps keep environments reproducible and makes rollbacks easier.
    True
14. Two related tables must be updated together so that either both changes succeed or both are rolled back if a problem occurs. Which database feature should you use to guarantee this behavior?
    Transaction
15. You are hardening the login flow for a new web application before rolling it out in an internal it test. Which measures improve the security of user authentication? Select all that apply.
    Add rate limiting to the login endpoint; Require multi-factor authentication for privileged accounts; Hash and salt passwords before storing them
16. A Linux application server suddenly reports 95 percent disk usage, and you find that most of the space is under /var/log. Services are still running and writing logs. What is the best immediate action to free space while preserving current logs?
    Rotate and compress older log files
17. You are setting up an automated it test suite for a REST API that will run in your CI pipeline. Which practices will make the tests more reliable and maintainable? Select all that apply.
    Isolate external dependencies with mocks or stubs; Use realistic but controlled test data sets; Include performance checks in CI when appropriate
18. A microservice in production gradually consumes more memory until containers restart, affecting your it quizzes environment. You must diagnose the issue with minimal downtime. What is the most appropriate first step?
    Use a production-safe profiler to sample memory usage
19. You are designing access control for a microservice architecture that exposes internal APIs. Each service must authenticate callers and enforce fine-grained permissions per endpoint. Which design pattern best meets this requirement?
    Issue signed tokens with scoped claims that each service validates