Linux System Administrator Interview Questions You'll Most Likel

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Linux System Administrator Interview Questions You'll Most Likely Be Asked is a perfect companion to stand ahead above the rest in today’s competitive job market. Rather than going through comprehensive, textbook-sized reference guides, this book includes only the information required immediately for job search to build an IT career. This book puts the interviewee in the driver's seat and helps them steer their way to impress the interviewer.
 
Table of contents
1. General Tools
2. Advanced Tools
3. Files Manipulation
4. Linux Understanding
5. Server Administration
6. Services & Daemons
7. Scripts
8. Administering and Upgrading Kernel Modules
HR Interview Questions
INDEX
 
Includes:
a) 221 Linux System Administrator Interview Questions, Answers and proven Strategies for getting hired as an IT professional
b) Dozens of examples to respond to interview questions
c) 75 HR Questions with Answers and proven strategies to give specific, impressive, answers that help nail the interviews
d) 2 Aptitude Tests download available on www.vibrantpublishers.com
 
BISAC
COM046070   COMPUTERS / Operating Systems / Linux
COM088010   COMPUTERS / System Administration / Linux & UNIX Administration
COM051390   COMPUTERS / Programming / Open Source
 
Sample from the book
(Below Questions and Answers are randomly taken from different pages of the book)
 
7: You see a process “./myApplication” with PID 44556, how can you know where was the file executed from?
Answer:
You can identify the path where the PID was executed by running pwdx 44556 and you will get the command executing path as an output.
 
81: Explain BIOS, MBR and GRUB.
Answer:
BIOS, MBR and GRUB are all integral parts of the Linux boot up process. BIOS stands for Basic Input/output System which controls the input and output devices. When the Linux system is switched on, the first process is BIOS checking to make sure that the input and output devices are available. MBR is short for Master Boot Recorder. MBR is a small space of only 512 bytes which is found either on the beginning or end of the hard disk. It contains the primary boot loader code, partition table information and a magic number. The primary boot loader code tells the MBR where the actual boot loader is located, the partition table knows the start and end of each partition and the magic number validates the MBR. GRUB is acronym for Grand Unified Boot loader which is located next to the MBR and either lets the user choose or loads the default boot parameters. GRUB loads the Kernel into the memory.
 
148: If you want to get statistical information about your server for the previous days, how can you do that?
Answer:
In order to get statistical information about your server, you can use sar.
 
197: How can you create a script that will wait for specific output and will act according to it? - for instance, wait for “username:” before sending the username?
Answer:
Linux provides a tool that “expects” a specific string and sending new commands in response which called “expect”.
 
221: How will you reverse the changes that were made to the initial disk image?
Answer:
Following steps has to be performed to reverse the changes that were made in the initial disk image:
a) Reboot system by choosing rescue kernel in GRUB (GRand Unified Boot Loader) menu
b) Change incorrect setting which caused initramfs(list of directories on the file system) to malfunction
c) Recreate initramfs with correct settings by executing the following command
dracut –kvermykernalversion–force
dracut is an initramfs infrastructure and its event-driven. This command will copy files from installed system and merge it with the initial disk image.
 
Tags:
Linux System Administrator Interview, Linux System Administrator, Linux System Administration, Linux Server Administration, Linux Advanced Tools, Linux Scripts, Linux Kernel Modules, Linux Services and Daemons, HR Questions, Job Interview Questions, Vibrant Publishers