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210-250 · Question #5
210-250 Question #5: Real Exam Question with Answer & Explanation
The correct answer is C. program that runs unobtrusively in the background. A daemon is a background process on Linux that runs without direct user interaction, typically started at boot time to provide system or network services.
Cybersecurity Fundamentals
Question
Which definition of a daemon on Linux is true?
Options
- Aerror check right after the call to fork a process
- Bnew process created by duplicating the calling process
- Cprogram that runs unobtrusively in the background
- Dset of basic CPU instructions
Explanation
A daemon is a background process on Linux that runs without direct user interaction, typically started at boot time to provide system or network services.
Common mistakes.
- A. Error checking after fork() is a programming practice in process creation, not a definition of a daemon.
- B. A new process created by duplicating the calling process describes the result of a fork() system call, not a daemon.
- D. A set of basic CPU instructions describes machine code or an instruction set architecture, which is unrelated to daemons.
Concept tested. Linux daemon process definition and characteristics
Reference. https://man7.org/linux/man-pages/man7/daemon.7.html
Topics
#Linux daemon#background processes#OS concepts
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