TODO:
- a sample of simple questions that I or my collegues have gotten on the interviews or encountered in day-to-day tasks
- aggregate them into a more open-ended questions, that take 3-5 minutes to answer and give candidates the ability to show their knowledge by getting into details
AS | IP | BGP Prefix | CC | Registry | Allocated | AS Name
6830 | 188.167.89.20 | 188.167.0.0/17 | SK | ripencc | 2009-06-11 | LGI-UPC formerly known as UPC Broadband Holding B.V., AT
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Q: Explain the difference between /etc/profile, ~/.bash_profile, etc. What are they used for, what is the orider of execution?
A:
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1 | What is a public key finger print? What can you use if for and when? Do only public keys have fingerprints? | It is a sequence of bytes, a shortened version of the full public key for which it is the fingerprint of. The fingerprint is generated by applying a cryptographic hash function (any cryptographic function can be used for that (SHA1 or MD5), the lenght of the fingerprint desired being the primary factor for choosing (md5 produces a 128 bit fingerprint, sha1 - 160 bit) ) to the initial public key. The primary uses include (i) simplified key management; (ii) identification of the public key; (iii) |
2 | You are working for a company that uses RAID10 NAS for its database server w/ 4 HDDs of 1TB. Name the reasons you would recommend a backup solution for them and not recommend it. | The main reasons are (i) malware suceptability, (ii) intrusion possibility (all drives in the RAID are succeptable to the same malware and intrusions with backups being offline), (iii) single-location dangers (very miniscule considering todays datacenters), (iv) human error (accidental deletion). |
vagrant@node1:~/.ssh$ ssh-keygen -lf public_git.key
4096 ed:58:09:fc:95:63:9b:99:30:77:55:de:68:0e:11:93 [email protected] (RSA)
mindaugas@Mindaugas-Lenovo-Y50-70:~/.ssh/private_keys$ ssh-add node3.priv
Enter passphrase for node3.priv:
Identity added: node3.priv (node3.priv)
mindaugas@Mindaugas-Lenovo-Y50-70:~/.ssh/private_keys$ ssh-add -l
4096 70:33:6c:5d:30:38:42:f6:dc:54:1a:f2:03:05:84:cd node3.priv (RSA)
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How sync branches from remote to local when remote branches were deleted?
Blah
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