Alstom Transportation Senior Software Engineer Interview Questions and Answers

Arbitration in CAN is a process of resolving conflicts when multiple nodes try to transmit data simultaneously.

• Arbitration is used in Controller Area Network (CAN) to ensure that only one node transmits data at a time.

• Each node on the CAN bus has a unique identifier, and the node with the highest priority identifier gets to transmit its data first.

• If two or more nodes try to transmit data at the same time, the arbitrat...read more

let, const, and var are all used to declare variables in JavaScript, but they have different scopes and behaviors.

• let: block-scoped variable, can be reassigned

• const: block-scoped variable, cannot be reassigned, but its properties can be modified

• var: function-scoped variable, can be reassigned

Launch modes in Android determine how a new instance of an activity is associated with the current task.

• Standard - creates a new instance of an activity in the task

• SingleTop - if the activity is at the top of the stack, it will not be recreated

• SingleTask - creates a new task and puts the activity at the root of the task

• SingleInstance - similar to SingleTask, but the activity is the only one in the task