Unix Admin - Revision history

Graggle at 23:29, 21 April 2026

2026-04-21T23:29:49Z

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	[[Category:Jobs]]		[[Category:Jobs]]
	==Unix System Administrator Questions==		==Unix System Administrator Questions==

Receive at 03:11, 20 April 2007

2007-04-20T03:11:39Z

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			[[Category:Jobs]]
	==Unix System Administrator Questions==		==Unix System Administrator Questions==

Phil at 13:33, 8 March 2006

2006-03-08T13:33:17Z

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	* What is IRQ balancing, how would you do it? What does 64-bit computing really mean?		* What is IRQ balancing, how would you do it? What does 64-bit computing really mean?

			* What is the difference between Maildir and mbox? Advantages of Maildir?

			* Customer has 10Gb /var, 5Gb /usr and wants to swap the two without losing any data. Explain the steps required to do so.

			* Give me the basic commands for an SMTP session.

			* Explain why the ``From:'' header in a standard e-mail is essentially useless for tracking an email. What should you be looking at?

Markpb at 10:51, 8 March 2006

2006-03-08T10:51:50Z

← Older revision		Revision as of 10:51, 8 March 2006
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	* What is IRQ balancing, how would you do it? What does 64-bit computing really mean?		* What is IRQ balancing, how would you do it? What does 64-bit computing really mean?


	~~===Network administration:===~~

	* Can you explain how to work out how many addresses are usable in a standard subnet?

	* If you had to write some code to see if an IP address was in a particular subnet, how would you do it?

	* What is a VLAN? How do they work?

	* Can you explain some differences between, and give examples of when you would use HSRP, VRRP and BGP for resilience?

	* Give an example of when you might use, or have used, tcpdump/ethtool/sniffer ?

	* Updating ACLs safely, how would you go about it?

	* Can you describe the three-way handshake, roughly?

	* What's a link-state protocol?

	* Do you know what an administrative distance is? Any examples?

	* PKI: Can you describe, roughly how Public Key Cyrpto works? If a protocol is encrypted, how can it be proxied?

Fatwa at 10:43, 8 March 2006

2006-03-08T10:43:52Z

← Older revision		Revision as of 10:43, 8 March 2006
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	==Unix System Administrator Questions==		==Unix System Administrator Questions==

			Back to [[Interview Questions]]

	===Unix===		===Unix===

Fatwa at 10:43, 8 March 2006

2006-03-08T10:43:32Z

New page

==Unix System Administrator Questions==

===Unix===
* What's the latest version of the Linux kernel?

* Can you tell me how you would make a directory group writable? how would you rm a file that starts with a minus.

* Filesystem is full, but no large files seem to be present. What do you do? What could it be?

* What's the system.map file?

* Could you write a cd command in the programming language of yoru choice ?

* What does the fork() system call return?

* explain the steps between sending an e-mail and it being received.

* What language do you generally use for scripting;
**shell: Do you know what the "shift" command does? What variable contains the return value? of the last process?
**Perl: Can you explain what tainting is? Can you explain what the -w command line argument does?
**Python: Can you explain what a dictionary is?

* A command is going haywire, can you describe the steps you would take to diagnose the problem? How would you collate information useful for forming a detailed bug report?

* What is IRQ balancing, how would you do it? What does 64-bit computing really mean?

===Network administration:===

* Can you explain how to work out how many addresses are usable in a standard subnet?

* If you had to write some code to see if an IP address was in a particular subnet, how would you do it?

* What is a VLAN? How do they work?

* Can you explain some differences between, and give examples of when you would use HSRP, VRRP and BGP for resilience?

* Give an example of when you might use, or have used, tcpdump/ethtool/sniffer ?

* Updating ACLs safely, how would you go about it?

* Can you describe the three-way handshake, roughly?

* What's a link-state protocol?

* Do you know what an administrative distance is? Any examples?

* PKI: Can you describe, roughly how Public Key Cyrpto works? If a protocol is encrypted, how can it be proxied?