What role do modern data management systems play in data analytics? They prevent data analysis They slow down data processing They enable efficient data analysis They focus on manual data analysis

They enable efficient data analysis

How do modern data management systems support data integration? By isolating data sources Through incompatible formats By facilitating data interoperability By restricting data flow

By facilitating data interoperability

What is the primary significance of the language ALGOL in the history of programming? First language to support recursion Introduced structured programming First language with garbage collection Basis for many modern languages

Basis for many modern languages

What significant contribution did the language ALGOL make to programming? First use of object-oriented programming Introduction of block structures Development of GUIs First web-based applications

Introduction of block structures

Which of the following correctly declares and initializes a 2D array in C# with specific values? int[,] array = { {1, 2, 3}, {4, 5, 6} }; int array[2,3] = { {1, 2, 3}, {4, 5, 6} }; int[,] array = new int[2,3] { {1, 2, 3}, {4, 5, 6} }; int[][] array = new int[2][3] { {1, 2, 3}, {4, 5, 6} };

int[,] array = new int[2,3] { {1, 2, 3}, {4, 5, 6} };

In C#, what is the difference between a rectangular array and a jagged array? Rectangular arrays have fixed rows; jagged arrays do not. Jagged arrays can have different lengths for each row. Rectangular arrays consume more memory. Jagged arrays are faster to access.

Jagged arrays can have different lengths for each row.

Which of the following is true about 2D arrays in JavaScript compared to C++? JavaScript arrays are dynamic; C++ arrays are static. JavaScript arrays are type-safe; C++ arrays are not. C++ arrays allow different data types; JavaScript does not. Both languages require explicit size declaration at initialization.

JavaScript arrays are dynamic; C++ arrays are static.

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