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precious · Oct 17, 2024

Thanks @Emmanuel Phakula Mandala. While working at a fintech startup, we adopted a serverless architecture combined with microservices to handle transactions. What considerations did we need to keep in mind when designing a load balancing solution that could handle sudden spikes in transaction volume, all while maintaining low latency and high security for our users?

precious · Oct 17, 2024

abiodun1991 said:
What is a function call in programming?
A command to create a new variable
A command to run another part of the program and return
A command to delete data
A command to stop the program

Explanation

A function call in programming is a command to run another part of the program and return. It invokes a function that has been defined elsewhere in the code, allowing the program to execute the function's instructions and, if applicable, return a result.

precious · Oct 17, 2024

abiodun1991 said:
What is a function in programming?
A piece of code that does one specific job
A loop that repeats a block of code
A variable that stores data
A comment that explains the code

Explanation

A function in programming is a piece of code that does one specific job. It is designed to perform a particular task, can take inputs (arguments), and may return an output. Functions help in organizing code, promoting reuse, and improving readability.

precious · Oct 17, 2024

abiodun1991 said:
What is debugging?

Deleting old code
Compiling code
Fixing mistakes in code
Writing new code

Debugging is fixing mistakes in code. It involves identifying and resolving errors or bugs in a program to ensure it runs correctly and efficiently. This process can include testing, diagnosing issues, and modifying the code to correct any problems.

precious · Oct 17, 2024

abiodun1991 said:
What is a class in object-oriented programming (OOP)?

A blueprint or template for creating objects.
A specific instance of an object.
A variable that stores data
A method that an object can perform.

Explanation

In object-oriented programming (OOP), a class is a blueprint or template for creating objects. It defines the properties (attributes) and behaviors (methods) that the objects created from the class will have.

precious · Oct 17, 2024

abiodun1991 said:
What is object-oriented programming (OOP)?
A technique to write software without using any models.
A method to divide programs into smaller groups of actions or tasks.
A way to write programs as a simple list of instructions.
A way to model real-world objects in computer code.

Explanation

Object-oriented programming (OOP) is a way to model real-world objects in computer code. It uses concepts such as classes and objects to encapsulate data and behavior, allowing for more organized, reusable, and modular code. OOP helps in representing complex systems by creating models that reflect the relationships and attributes of real-world entities.

precious · Oct 17, 2024

abiodun1991 said:
What does it mean for an array to be multidimensional?
It is a type of function.
It can hold arrays within arrays.
It can only be used in one-dimensional space.
It can hold only one value.

Explanation

For an array to be multidimensional, it can hold arrays within arrays. This means that it can be structured in more than one dimension, such as a two-dimensional array (like a matrix) or three-dimensional array, allowing for the organization of data in a grid or cube format.

precious · Oct 17, 2024

abiodun1991 said:
What is an array?
A single value variable
A type of loop
A type of function
A special type of variable that holds many values at once

Explanation

An array is a special type of variable that holds many values at once. It is a data structure that allows you to store multiple values of the same type in a single variable, making it easier to manage and access related data.

precious · Oct 17, 2024

abiodun1991 said:
In pseudocode, what does the symbol || represent?
Logical NOT
Correct Answer:
Logical OR
Logical AND
Logical XOR

Explanation

In pseudocode, the symbol || represents Logical OR. This operator is used to combine two conditions, and it returns True if at least one of the conditions is True.

precious · Oct 17, 2024

abiodun1991 said:
Which Boolean operation returns True only if both conditions are True?
XOR
NOT
AND
OR

Explanation

The Boolean operation that returns True only if both conditions are True is AND. In an AND operation, both operands must be True for the result to be True; if either operand is False, the result will also be False.

precious · Oct 17, 2024

abiodun1991 said:
Which of the following is an example of a string?
@
7
$
Hello world

Explanation

An example of a string is Hello world. Strings are sequences of characters that can include letters, numbers, symbols, and spaces, and they are typically enclosed in quotation marks. The other options (@, 7, $) represent individual characters or a number, not a full string.

precious · Oct 17, 2024

abiodun1991 said:
What happens when you enter a number as a character?
It gets deleted.
Correct Answer:
You cannot perform math operations with it.
You can perform math operations with it.
It becomes a string.

Explanation

When you enter a number as a character, you cannot perform math operations with it. Characters are treated as individual symbols or letters, so even if the character looks like a number (e.g., '5'), it is not treated as a numeric value for calculations. Instead, it may be stored as a string if it is enclosed in quotes.

precious · Oct 17, 2024

abiodun1991 said:
Which of the following is an example of an integer?
9.95
23
4.1
5.62

Explanation

An example of an integer is 23. Integers are whole numbers that can be positive, negative, or zero, and do not have decimal fractions. The other options (9.95, 4.1, and 5.62) are all floating-point numbers.

precious · Oct 17, 2024

abiodun1991 said:
What is a floating-point number?
A whole number
A number used only in financial calculations
A number that can have decimal fractions
A number with a specific number of digits after the decimal point

Explanation

A floating-point number is a number that can have decimal fractions. It is used to represent real numbers and can accommodate a wide range of values, including those with fractional parts, unlike whole numbers (integers).

precious · Oct 17, 2024

abiodun1991 said:
Which of the following is an example of a character variable?
3.14
False
"555-1212"
'7'

Explanation

An example of a character variable is '7'. In programming, character variables typically hold a single character or symbol, often represented using single quotes. The other options represent different data types:

3.14 is a floating-point number.
False is a boolean value.
"555-1212" is a string.

precious · Oct 17, 2024

abiodun1991 said:
What is a variable in a computer program?
A type of function that performs calculations
A special type of loop in programming
A container that holds data for use later
A fixed value that never changes

Explanation

A variable in a computer program is a container that holds data for use later. It allows you to store, modify, and retrieve values throughout the program, and its value can change during execution.

precious · Oct 17, 2024

abiodun1991 said:
What is the main purpose of pseudocode?
To compile the program into machine language
To create a user interface for the program
To describe what the code will do using plain language
To write the final code for a program

Explanation

The main purpose of pseudocode is to describe what the code will do using plain language. It allows programmers to outline their ideas and algorithms in a clear and understandable way without the constraints of specific programming syntax, making it easier to convert into actual code later

precious · Oct 17, 2024

abiodun1991 said:
What does a diamond shape in a flowchart indicate?
The start or end of a program
A decision point
A process
Input or output

Explanation

A diamond shape in a flowchart indicates a decision point. This is where a condition is evaluated, and based on the result (typically "yes" or "no"), the flowchart branches into different paths.

precious · Oct 17, 2024

abiodun1991 said:
What should be done before starting to code a program?
Decide what the program should do.
Ignore planning and start coding immediately.
Decide what the program will look like.
Write as much code as possible.

Explanation

Before starting to code a program, you should decide what the program should do. This involves planning and defining the program's purpose, functionality, and logic to ensure that you have a clear understanding of the goals and requirements before writing any code

precious · Oct 17, 2024

abiodun1991 said:
What is the main purpose of a flowchart in programming?

To test the program for errors
To show the flow (sequence) of logic in a program
To design the user interface of the program
To write the actual code of the program

Explanation

The main purpose of a flowchart in programming is to show the flow (sequence) of logic in a program. It provides a visual representation of the steps, decisions, and paths a program will take, helping to plan, analyze, and communicate the program’s structure before actual coding begins.

precious · Oct 17, 2024

abiodun1991 said:
What is the main purpose of pseudocode?
To compile the program into machine language
To create a user interface for the program
To describe what the code will do using plain language
To write the final code for a program

Explanation

The main purpose of pseudocode is to describe what the code will do using plain language. It helps programmers plan and structure their code without worrying about specific syntax, making it easier to understand the logic before translating it into actual programming code

precious · Oct 17, 2024

abiodun1991 said:
What is a loop in programming?
A sequence of instructions that is never executed.
A sequence of instructions that is executed randomly.
A sequence of instructions that is executed only once.
A sequence of instructions that is executed repeatedly.

Explanation

A loop in programming is a sequence of instructions that is executed repeatedly. The loop continues until a certain condition is met, such as with for, while, or do-while loops. This allows the same block of code to run multiple times.

precious · Oct 17, 2024

abiodun1991 said:
What is branching in computer programming?
A way to store data in a program
A way to repeat a sequence of instructions
A technique to speed up a program
A method to execute a different sequence of instructions based on a condition

Explanation

Branching in computer programming is a method to execute a different sequence of instructions based on a condition. It allows the program to "branch" into different paths depending on certain conditions, often using structures like if, else, or switch statements.

precious · Oct 17, 2024

abiodun1991 said:
Why are comments ignored by the computer?
Because they are not part of the executable code
Because they are written in a different language
Because they are placed at the end of the code
Because they are written in uppercase letters

Explanation

Comments are ignored by the computer because they are not part of the executable code. They are included for human readers to provide explanations or notes about the code, but the computer skips over them during execution.

precious · Oct 17, 2024

abiodun1991 said:
What do you put inside the parentheses when using a function?
The arguments or values the function needs to process
The function's return value
The function's definition
The function's name

Explanation

When using a function, you put the arguments or values the function needs to process inside the parentheses. These arguments are passed to the function so it can perform its operation on them.

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