1.9 Identify common features and tools of the Linux client/desktop operating system.
Objective 1.9 sits in Operating Systems, which carries 28% of the A+ Core 2 exam. The questions below are original, written from the official objective title above, and each explanation cites the CompTIA page it rests on.
Objective title verbatim from the official objectives. CompTIA exam page ↗
A worked example
Shown solved, with the whole explanation open: this is what every question here carries.
A technician on a Linux workstation runs a command with sudo and is prompted for a password. Which password does the default sudoers policy expect?
Correct.
Concept
Privilege escalation tools differ in whose identity they verify. One family confirms you are who you claim to be before granting elevated rights; another makes you prove you hold the account being switched to.
Why B
The sudoers policy validates the credentials of the person running the command, not those of the account the command will run as. That is what separates sudo from su, and it is why each administrator keeps a personal secret rather than sharing one.
Now you: objective 1.9 questions
No account needed. The explanation opens when you answer.
Sample question 1 of 3
A Linux workstation drops to an emergency shell after a technician installs a second internal disk. An /etc/fstab line names /dev/sdb1, which is now the new disk. Which first-field entry avoids this?
Sample question 2 of 3
Users on a Linux workstation share a world-writable /srv/upload directory and keep deleting each other's files. Which permission bit stops that?
Sample question 3 of 3
A technician adds an external archive drive to /etc/fstab so it can be mounted by name. The drive is often disconnected and must not be mounted at boot. Which option belongs on that line?
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Read the sources
These are the official pages the questions above cite. Reading them is studying the objective from the primary source, which is what the explanations point you toward anyway.
More objectives in Operating Systems
- 1.2 1.2 Given a scenario, perform OS installations and upgrades in a diverse environment.
- 1.3 1.3 Compare and contrast basic features of Microsoft Windows editions.
- 1.4 1.4 Given a scenario, use Microsoft Windows operating system features and tools.
- 1.5 1.5 Given a scenario, use the appropriate Microsoft command-line tools.
- 1.6 1.6 Given a scenario, configure Microsoft Windows settings.
- 1.7 1.7 Given a scenario, configure Microsoft Windows networking features on a client/desktop.
- 1.8 1.8 Explain common features and tools of the macOS/desktop operating system.