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Which of the following commands brings a system running SysV init into a state in which it is safe to perform maintenance tasks? (Choose TWO correct answers.)
Suggested Answer: E
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32 comments · newest first
JA
Jaime
11 months ago
Not sure about shutdown -single now, seems off to me.
CA
Carissa
11 months ago
Wait, can you really use shutdown -R 1 now for that?
EN
Enola
12 months ago
I always use runlevel 1 for maintenance.
GL
Glenna
12 months ago
I think telinit 1 is also correct!
SH
Shawnna
1 year ago
init 1 is definitely one of the right answers.
MA
Margot
1 year ago
I'm not entirely sure about runlevel 1, but I feel like it’s related to single-user mode as well.
AR
Ardella
1 year ago
I practiced a similar question where telinit was one of the options, and I think it also changes the runlevel, so it could be correct too.
BR
Brynn
1 year ago
I think shutdown -R 1 now might not be the best choice since it reboots the system instead of just switching to maintenance mode.
CL
Clarence
1 year ago
I remember that init 1 is supposed to bring the system to single-user mode, which is safe for maintenance.
CH
Christene
1 year ago
I'm a bit confused by the wording of this question. What exactly does it mean by "safe to perform maintenance tasks"? I'll need to think through the implications of each option carefully.
MA
Malcolm
1 year ago
I'm pretty confident about this one. The shutdown commands are for powering down the system, not just entering maintenance mode. I'll go with init 1 and telinit 1.
LU
Lucille
1 year ago
Okay, I've got this. The key is to look for commands that transition the system to a single-user or maintenance mode. I think init 1 and telinit 1 are the correct answers here.
BR
Brynn
1 year ago
Hmm, I'm a bit unsure about this one. I know the init command is used to change runlevels, but I'm not sure which ones are considered "safe" for maintenance.
LA
Laurena
1 year ago
This looks like a tricky question about SysV init commands. I'll need to think carefully about the differences between the options.
LA
Layla
1 year ago
Wait, what's the difference between init 1 and telinit 1? They both sound like they do the same thing. I'll have to research that a bit more.
WE
Wenona
1 year ago
Hmm, E) runlevel 1 looks like it might work, but I'm not sure if that's the same as single-user mode. I'll have to think this one through a bit more.
AL
Alonzo
1 year ago
Haha, A) shutdown -R 1 now? That's just going to reboot the system, not put it in single-user mode! These options are a bit confusing, but I think I've got it now.
MA
Marvel
1 year ago
User 3: So, the correct options are B) shutdown -single now and D) telinit 1.
AL
Alex
1 year ago
User 2: Alex is right, it won't put the system in single-user mode.
HA
Hannah
1 year ago
User 1: Yeah, A) shutdown -R 1 now will just reboot the system.
LA
Lashawnda
2 years ago
I'm not sure about that. Isn't B) shutdown -single now the command to enter single-user mode? I'll have to double-check the man pages.
ME
Melda
1 year ago
Yes, B) shutdown -single now is the command to enter single-user mode.
RE
Rebbecca
1 year ago
D) telinit 1
CH
Charlene
1 year ago
A) shutdown -R 1 now
FL
Fletcher
2 years ago
I'm not sure about the answer. Can you explain why those commands are the correct ones?
JA
Jamal
2 years ago
I agree with Penney. Those commands will bring the system into a safe state for maintenance tasks.
CA
Carman
2 years ago
I think C) init 1 and D) telinit 1 are the correct answers. They both bring the system into single-user mode, which is the safest state for maintenance tasks.
RO
Rosamond
2 years ago
Make sure to use one of those commands before doing any maintenance on the system.
MA
Marge
2 years ago
Single-user mode is definitely the safest state for performing maintenance tasks.
DA
Dalene
2 years ago
Yes, you are correct. Both of those commands bring the system into single-user mode.
EA
Earlean
2 years ago
I think C) init 1 and D) telinit 1 are the correct answers.
PE
Penney
2 years ago
I think the correct answers are A) shutdown -R 1 now and D) telinit 1.