performance
medium
Apply
harden
2 points
Question 23. CSCD240-E1-C
Remove the setuid bit from /opt/svc/agent using symbolic form, leaving other perms.
Work the drill
Answer on paper or in a terminal before revealing the ideal answer.
Ideal answer
chmod u-s /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 -s /opt/svc/agent
Misconception. Removes both setuid AND setgid.
Remedy. u-s is surgical.
chmod 0755 /opt/svc/agent
Misconception. Uses octal when question said symbolic.
Remedy. Read the requirement.
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:
CO-M9-O2
O*NET tasks:
SOC 15-1212.00: task 6SOC 15-1212.00: task 7SOC 15-1244.00: task 1SOC 15-1244.00: task 2SOC 15-1299.05: task 23SOC 15-1299.05: task 24
NCAE errors:
WWW SSL / failure: Failed to connect to hostSMB Login / failure: SMB operation failed: [Errno.WWW Content / failure: Failed to connect to hostWWW Content / timeout: TimeoutWWW Content / failure: Website cannot be reachedWWW SSL / timeout: TimeoutSSH Login / failure: Failed to connect to host: IPSMB Login / failure: SMB operation failed: [Errno.WWW SSL / failure: [SSL] record layer failure (_s.SMB Login / failure: SMB connection failed: proto.SSH Login / partial: The following users failed t.SSH Login / partial: The following users failed t.
Course-artifact links
Lectures
- CSCD240-S26-L06. Permissions part 2: chmod octal + symbolic, directory x bit