10+ Government of Ethiopia Interview Questions and Answers

Swapping two numbers without using a third variable

• Use addition and subtraction to swap the values

• Use XOR operator to swap the values

• Use multiplication and division to swap the values

Cut the cake into quarters in the first attempt, then stack the quarters and cut them in half in the second attempt, resulting in 8 pieces.

• Cut the cake into quarters in the first attempt

• Stack the quarters on top of each other and cut them in half in the second attempt

• You will have 8 pieces of cake after the third attempt

SQL Server performance is managed through monitoring, optimization, and tuning.

• Regularly monitor server performance using tools like SQL Server Profiler and Performance Monitor.

• Optimize queries by using indexes, avoiding unnecessary joins, and writing efficient code.

• Tune server settings such as memory allocation, disk configuration, and CPU usage.

• Consider partitioning large tables, implementing caching mechanisms, and using stored procedures for better performance.

Scenarios for completing voter registration process

• Online registration: Voter fills out form on official website

• In-person registration: Voter submits form at local election office

• Mail-in registration: Voter sends completed form by mail

• Same-day registration: Voter registers on election day at polling place

Functional testing focuses on the behavior of the system, while non-functional testing focuses on performance, usability, and security.

• Functional testing ensures that the system functions as expected based on the requirements.

• Non-functional testing evaluates the system's performance, usability, reliability, and security.

• Examples of functional testing include unit testing, integration testing, and system testing.

• Examples of non-functional testing include load testing, stress t...read more

Security in SQL Server is handled through various mechanisms such as authentication, authorization, encryption, and auditing.

• Implement strong authentication methods such as Windows Authentication or SQL Server Authentication.

• Set up appropriate permissions and roles to control access to databases and objects.

• Utilize Transparent Data Encryption (TDE) to encrypt data at rest.

• Enable auditing to track and monitor database activities for security compliance.

• Regularly apply security...read more

OOPS stands for Object-Oriented Programming System. It is a programming paradigm based on the concept of objects.

• OOPS is a way of organizing and designing code around objects

• It emphasizes encapsulation, inheritance, and polymorphism

• Examples of OOPS languages include Java, C++, and Python

Joins in SQL are used to combine data from two or more tables based on a related column.

• Joins are used to retrieve data from multiple tables in a single query.

• There are different types of joins such as inner join, left join, right join, and full outer join.

• The join condition is specified using the ON keyword and the related columns.

• Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column;

Data science is the study of extracting insights and knowledge from data using various statistical and computational methods.

• Data science involves collecting, cleaning, and analyzing large datasets

• It uses statistical and machine learning techniques to extract insights and make predictions

• Data visualization is an important aspect of data science to communicate findings

• Examples of data science applications include fraud detection, recommendation systems, and predictive maintena...read more