Practice Exam 1D

Practice Exam 1D - Midterm 1 Review

Q1. What does the operating system do with processes and CPU cores?

Q2. Which storage metric measures how fast data can be read/written?

Q3. Which storage metric measures how long a single I/O operation takes?

Q4. In a data center, what is a “rack”?

Q5. A shell’s basic loop can be described as:

Q6. What is a shell script?

Q7. Consider the command: cat huge.csv | python process.py | gzip > results.csv.gz &. Which statement is true?

Q8. What is “virtualization”?

Q9. What Docker command builds a custom image from a Dockerfile?

Q10. Containers serve as “sandboxes.” What does this mean?

Q11. A MAC address has two parts. What do they identify?

Q12. What is NAT (Network Address Translation)?

Q13. Port numbers identify which ______ on a machine should receive network traffic.

Q14. Why might you choose UDP over TCP?

Q15. What layer of the network stack uses MAC addresses for addressing?

Q16. gRPC builds on top of which protocol?

Q17. What does Protocol Buffers’ “variable-length encoding” achieve?

Q18. In Docker, what is the security risk of running docker run -d -p 300:80 myimg (without specifying an IP)?

Q19. What is the purpose of SSH tunneling with the -L flag?

Q20. Different systems use different terms for “partitioning.” Which term does MongoDB use?