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There are two tables: users and countries. Each has two columns. Countries lists a city name and then the country it is in (Moscow : Russia, New York : USA, etc). Users lists an ID and a city name (1 : New York, 2 : Helsinki, etc). Note that there are cities listed in users that do NOT appear in countries. Output a table listing all the IDs and the corresponding countries, but be sure any NULL value is changed to "unknown."
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Technical Support Expert

Interviewed at Crossover for Work

4★
Sep 11, 2020

There are two tables: users and countries. Each has two columns. Countries lists a city name and then the country it is in (Moscow : Russia, New York : USA, etc). Users lists an ID and a city name (1 : New York, 2 : Helsinki, etc). Note that there are cities listed in users that do NOT appear in countries. Output a table listing all the IDs and the corresponding countries, but be sure any NULL value is changed to "unknown."

Technical : 1. A to Z of Linux commands. They wrote A to Z in the white board and told me to write 5 commands of each alphabet. 2. Telnet scenario based question - like Server A to Sever B log transfer, time sync up, why not Sever B can't view the logs, Listing port. 3. All port numbers 4. All possible Network troubleshooting question -ping, nslookup, trace route, Soft skills and cultural fit related question.
avatar

Technical Support Engineer

Interviewed at Splunk

4★
Oct 30, 2019

Technical : 1. A to Z of Linux commands. They wrote A to Z in the white board and told me to write 5 commands of each alphabet. 2. Telnet scenario based question - like Server A to Sever B log transfer, time sync up, why not Sever B can't view the logs, Listing port. 3. All port numbers 4. All possible Network troubleshooting question -ping, nslookup, trace route, Soft skills and cultural fit related question.

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