performance easy Apply chmod-octal 2 points

Question 22. CSCD240-E1-C

Set /opt/svc/agent to owner rwx, group rx, other none using octal.

Work the drill

Answer on paper or in a terminal before revealing the ideal answer.

Ideal answer

chmod 750 /opt/svc/agent

Misconception bank

Each row below is a plausible wrong answer, the thinking that produces it, and the remedy that corrects the misconception. These are the foundation of the multiple-choice framing and the targeted feedback a student receives after answering.

chmod 755 /opt/svc/agent

Misconception. Other should be 0, not 5.

Remedy. Other = "none" = 0.

chmod 740 /opt/svc/agent

Misconception. Group dropped x.

Remedy. Group x required (r+x=5).

Authority mappings

Hover any chip for the mapping justification; click to open the authority record.

DCWF roles: IT-451 System Administrator

DCWF tasks: T0136

KU outcomes: CD-OSC-O4

Course-artifact links

Lectures

CSCD240-S26-L06. Permissions part 2: chmod octal + symbolic, directory x bit

Lab questions

CSCD240-S26-LAB3: chmod 750 file.sh. Then verify with ls -l.