Developer and Engineer Interview Questions and Answers

Check if a string is a substring of another string

• Use the 'includes' method in JavaScript to check if a string is a substring of another string

• Iterate through an array of strings and use 'includes' to check for substrings

• Consider case sensitivity when checking for substrings

The OSI layers are used to define the different functions of a network communication system.

• The OSI model consists of 7 layers, each with specific functions.

• Application layer (Layer 7) handles high-level protocols, such as HTTP and FTP.

• Transport layer (Layer 4) ensures end-to-end communication and error-checking.

• Network layer (Layer 3) deals with routing and forwarding of data packets.

• Data link layer (Layer 2) manages the physical transmission of data.

• Physical layer (Layer 1)...read more

Transpose of a matrix involves swapping rows with columns.

• To transpose a matrix, swap the rows with the columns.

• The transpose of a matrix A with dimensions m x n is a new matrix B with dimensions n x m.

• Example: If A = [[1, 2], [3, 4]], then the transpose of A is B = [[1, 3], [2, 4]].