14 Must‑Know IT Quiz Questions on Databases, Linux, Networking & Python

1. Which database operation benefits most from an index? Answer: A. SELECT

2. Which locking method provides the best parallel access performance? Answer: D. Row lock

3. What happens if a DELETE statement omits the WHERE clause? Answer: B. All rows are deleted

4. Which network layer protocol does traceroute typically use? Answer: D. ICMP

5. In OSPF, which LSA type is confined to a single area? Answer: A. Type 2

6. Which Linux signal cannot be caught? Answer: B. SIGKILL

7. How to view which process is using a specific port on Linux? Answer: B. netstat -tnlp | grep <port> 8. How to remove duplicate elements from a Python list? Answer: B. Convert the list to a set and back to a list

9. What is the difference between Python lists and tuples? Answer: A. Lists are mutable, tuples are immutable

10. Which statement about Python class inheritance is correct? Answer: C. Multiple inheritance is allowed

11. Which of the following statements about ports are correct? Answer: A, B, C, D (all listed statements are correct)

12. Which statements about HTTP GET and POST are incorrect? Answer: A and C

13. As a technical manager, how would you improve the availability of a simple website consisting of a web server, an application server, and a MySQL database? (Open‑ended – list possible enhancements such as redundancy, load balancing, health checks, monitoring, failover strategies, etc.)

14. From which aspects do you evaluate a hash function’s quality, and name some common hash functions? Answer: Evaluate efficiency, low collision rate, small output size, uniform distribution, minimal rehash impact; common functions include MD5, SHA‑1, CRC16, CRC32.