Quiz 9

What is the primary function of the "body-parser" middleware in Express.js?

• a) To parse HTTP headers

• b) To parse JSON data from request bodies

• c) To authenticate users

• d) To handle URL routing

What is the event-driven programming model used by Node.js?

• a) Synchronous programming

• b) Procedural programming

• c) Functional programming

• d) Asynchronous programming

In Flutter, what is a "StatefulWidget"?

• a) A widget with mutable properties

• b) A widget for layout design

• c) A widget for text rendering

• d) A widget for handling user gestures

Which component of a CPU coordinates the activities of all other hardware components?

• a) Arithmetic Logic Unit (ALU)

• b) Control Unit (CU)

• c) Memory Unit

• d) Input/Output Unit (IOU)

What is the purpose of the "accumulator" in a computer's arithmetic logic unit?

• a) To store intermediate results of calculations

• b) To manage input/output operations

• c) To decode instructions from memory

• d) To execute complex instructions

In Express.js, how is middleware execution controlled?

• a) By using the "middleware" keyword

• b) By specifying the order of middleware functions

• c) By setting a global flag

• d) By using the "next" function

What is Node Package Manager (NPM)?

• a) A tool for managing hardware resources

• b) A package manager for installing and sharing JavaScript libraries

• c) A built-in browser in Node.js

• d) A software development kit for building mobile apps

In Flutter, which widget is used for creating a scrollable list of items?

• a) ListView

• b) GridView

• c) Scrollable

• d) ScrollList

Which component of a CPU is responsible for temporarily storing data that the CPU is currently processing?

• a) Arithmetic Logic Unit (ALU)

• b) Control Unit (CU)

• c) Memory Unit

• d) Register

What is the purpose of the "clock speed" in a CPU?

• a) To regulate the power consumption

• b) To control the instruction set

• c) To measure the temperature

• d) To determine the number of instructions executed per second