Calling All Linux Experts

[bradcarr]

If I could ever so kindly ask the Linux world for some help.

I have applied for a job that is in a heavy Linux environment and I have been sent a questionnaire about my knowledge. I know my way around pretty good and just want double check my answers. Some of the questions and a gim-me, some take some thinking and some are just down right hard. Any and all help will be greatly appreciated.

Here are the questions:

1. Give an example of set of shell commands that will give you the number of files in a directory
2. How do you tell what process has a TCP port open in Linux
3. On a Red Hat Linux Variant how do you control whether a service starts when the system boots
4. How do you tell the amount of free disk space left on a volume
5. Give an example of a set of shell commands to tell how many times “bob” has logged on to the system this month
6. Give an example of a recursively copying a directory from one location to another.
7. How do you modify the IP and Net mask of a system running a Red Hat Variant of Linux
8. Give an example of a set of shell commands that will give you the number of “httpd” processes running on a Linux box.
9. On CentOS or Fedora based system using the package management application, how do you tell what package provided the file “libnss_ldap.so”
10. What is the difference between VTP client, server, and transparent
11. What is the maximum length of CAT6
12. How does one set up a layer two link to share VLANs
13. How does one implement redundant links at Layer 2
14. What is the difference between a hub, switch, and a router
a. What are the security advantages of switch vs. hub
15. Show an example of using telnet to learn the headers of an http server.
16. In what OSI layer does PPP exist
17. What’s the difference between TCP and UDP
18. Given a DNS server that has just started (with an empty cache) and host contacting this DNS server (using it’s OS setting) to learn an address for google.com, list the steps the DNS server will take to learn it with IP addresses (each step will have multiple possible IP addresses – you need choose only one per step).
19. Why are layer 2 loops bad, and what protocol was designed to prevent them
20. Given a radius server at 10.0.0.2 and a shared key of ‘abc123’ show the IOS commands necessary to authenticate switch users against the radius server, while still allowing the use of local username / password pairs

THANKS FOR THE HELP!!!!!!!!!!

[dcstar]

Originally Posted by bradcarr If I could ever so kindly ask the Linux world for some help. I have applied for a job that is in a heavy Linux environment and I have been sent a questionnaire about my knowledge. I know my way around pretty good and just want double check my answers. Some of the questions and a gim-me, some take some thinking and some are just down right hard. Any and all help will be greatly appreciated. ........

How about you supply the answers so we "experts" can tell you if they are correct or not, because I for one will not be taking the risk of aiding and abetting someone to get a job they may not be qualified for by potentially helping them cheat (and possibly prevent someone that is qualified from succeeding).

If you don't answer then those others on this forum who may not be as cynical as me may have learned a valuable lesson themselves.....

[bilijoe]

Originally Posted by dcstar How about you supply the answers so we "experts" can tell you if they are correct or not, because I for one will not be taking the risk of aiding and abetting someone to get a job they may not be qualified for by potentially helping them cheat (and possibly prevent someone that is qualified from succeeding). If you don't answer then those others on this forum who may not be as cynical as me may have learned a valuable lesson themselves.....

Good reply.

[schauerlich]

Perhaps if you don't know the answers to these questions or you're not confident enough in your knowledge of linux systems to know your answers are right, the job is not for you.

[pmlxuser]

Originally Posted by bilijoe good Reply.

Amen To That

[reality1011]

I am interested in seeing the answers ( because I don't know some of those) and I do agree that you should post your answers first.

[hyper_ch]

It is adviced to use a descriptive topic title, that means a topic title that gives some clue about the content in the thread itself...

A generic topic title like "noob here" or "need help" does not help at all. As you may have noticed, just about everyone posting in here has some kind of a problem or issue or question

And it is also adviced to use seperate threads for unrelated problems so that you can mark each one individually as solved.

[ibutho]

It seems like you need a good networking book as well as a Red Hat Enterprise Linux reference book. For the Red Hat and CentOS questions, take a look at the RHEL Deployment Guide.

[Jim!]

I'm no "expert" but by the looks of those questions you applied for a job as a network engineer? Judging from the content of your post it looks like you applied for a job your likely not qualified for (you didn't even provide us with your answers to the questions, some of which are very simple.)

[Raistlin82]

Originally Posted by dcstar How about you supply the answers so we "experts" can tell you if they are correct or not, because I for one will not be taking the risk of aiding and abetting someone to get a job they may not be qualified for by potentially helping them cheat (and possibly prevent someone that is qualified from succeeding). If you don't answer then those others on this forum who may not be as cynical as me may have learned a valuable lesson themselves.....

Excelllent