Q011 ○
Answer: B / Correct answer: B
With the same /24 subnet, addresses in 192.168.1.xxx are on the same network.
Q012 ○
Answer: B / Correct answer: B
This SQL retrieves the names of people aged 70 or older.
Q013 ○
Answer: A / Correct answer: A Hash
Compares a transformed value rather than the password itself.
Q014 ×
Answer: B / Correct answer: C 8
1 → 2 → 4 → 8.
Q015 ×
Answer: A / Correct answer: B SPOF
A single point whose failure stops the entire system.
Q016 ○
Answer: B / Correct answer: B
AND is true only when both conditions are satisfied.
Q017 ○
Answer: C / Correct answer: C 60秒
The 80-second portion becomes 40 seconds; adding the unchanged 20 seconds gives 60 seconds.
Q018 ○
Answer: C / Correct answer: C 3日
13 − 10 = 3 days.
Q019 ×
Answer: A / Correct answer: B Incremental
Incremental means since the previous backup; differential means since the last full backup.
Q020 ×
Answer: A / Correct answer: C 80%
Recall = 16 correctly detected ÷ 20 actual abnormalities = 80%.