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- LPIC-2 Linux Engineer 202
56.
What command must you type as root to have the system re - scan the directories on the
library path to enable programs to find dynamic libraries in these directories?
- A.sysctl
- B.ldconfig
- C.shadow
- D.init - libs
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| The ldconfig utility reads /etc/ld.so.conf and caches information on the libraries in the referenced directories, so option B is correct. The sysctl program is used to adjust run - time kernel features, but it doesn't manage libraries, so option A is incorrect. There is no standard shadow program, although /etc/shadow holds account passwords and aging information, so option C is incorrect. The init process is the first process run by the kernel; it's not used (even with options) as described in the question, so option D is incorrect. |
57.
You've determined that the SSH server is being started by the /etc/rc2.d/S16ssh startup
script (or a link of that name). You want to prevent this server from running in runlevel 2.
What is the most reliable way to do this?
- A.Rename the script or link so that its name begins with K rather than S .
- B.Delete the /etc/rc2.d directory.
- C.Delete the /etc/rc2.d/S16ssh file or link.
- D.Locate the corresponding Upstart configuration file and delete it.
- Answer & Explanation
- Report
Answer : [A]
Explanation :
Explanation :
| Startup scripts (or, more commonly, symbolic links that point to them) that begin with the letter S are called in such a way that they start the service in question; those that begin with the letter K are called in such a way that they stop the service in question. Thus, option A will have the desired effect. Options B and C will both prevent the server from starting, but the server may continue running if you switch from another runlevel. More importantly, option B will stop the computer from starting many other potentially vital services in runlevel 2. The question clearly states that the server is being started by a SysV startup script, so there's no need to look for a competing Upstart configuration file. |
58.
Which of the following is not a common bash startup script file?
- A.~/.bash_logout
- B./etc/bash.bashrc
- C./etc/bashrc
- D.~/.profile
- Answer & Explanation
- Report
Answer : [A]
Explanation :
Explanation :
| The ~/.bash_logout file is a common bash logout file; it doesn't run when bash starts, so it's not a bash startup script file, and option A is correct. Options B and C are two common names for global bash non - login startup scripts, and option D is a standard name for a user login startup script for bash . |
59.
You type sysctl - a as root . What can you expect to have happen?
- A.The computer will reboot immediately.
- B.All processes with invalid PPID values will be terminated.
- C.You will see a list of kernel keys and their values.
- D.You will see an error message describing the correct use of sysctl .
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| The sysctl utility enables you to set or view run - time kernel variables (keys), and its - a option displays them all; thus, option C is correct. Option A describes the effect of typing shutdown - r now or reboot as root . Option B doesn't describe the effect of any command. Since the specified command is legal, sysctl won't display an error message, and option D is incorrect. |
60.
What directory is commonly used as a supplemental location for additional scripts called
by the global bash login script?
- A./etc/bashrc.d
- B./etc/bash.extras
- C./etc/profile.d
- D./etc/scripts
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| The standard /etc/profile script provided with most Linux distributions searches /etc/profile.d and runs any scripts it finds there; therefore, option C is correct. Options A, B, and D all describe fictitious locations. |
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