http://bsdpunk.blogspot.ca/2013/09/facebook-first-level-interview-for.html

In March I had an interview with Facebook, and I wrote the questions down, at least during the ones in which I had enough time to do so.

14 Question Linux Test, if you get a switch wrong, you get the question wrong.

1. Port for ssh and dns 2. What is an MX record 3. What do you run to check the consistency of the kernel and file system 4. What command to display current cpu usage, ram ussage and process list 5. Now this question was worded funny he said in a manner that I thought he was talking about the time on uptime But he meant what 3 other pieces of information are included in uptime so I got this question wrong(said hours minutes seconds) 6. 3 Timestamps *nix keeps on every file 7 and 8 I didn't write anything down for it must have been stressful at that part of the interview I think one of these I missed it was what signal does kill send, and I said sigkill or something instead of sigterm 9. What does $$ and $2 in bash do 10. I didn't have anything written down for. 11. He asked what to show the routing table? 12. TCP Handshake 13. What does MTU stand for, and what is the MTU for ethernet? and by accident I got the last one write 14. What Signal does a child send to a parent when it is finished.

Answers I think are correct. I didn't graduate to the next interview so, yeah don't take my word for it. 1. 22 and 53 2. dns Mail records 3. fsck 4. top 5. the current time, the length of time the system has been up, the number of users, and the load average of the system over the last 1, 5, and 15 minutes 6. created, modified, last access 7. ? 8. ? 9. process id and 2nd arguement for a bash script 10. ? 11. route or netstat -nr 12. Syn SynAck Ack 13. Maximum Transmission Unit, 1500 14. sigchild

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