Barclays Data Engineer Interview Questions and Answers

Q1. Coding round java
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Q2. Spring boot and devops activities
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Q1. How to find out prime number
Ans. 
Prime numbers are numbers that are only divisible by 1 and themselves.
• Start by checking if the number is less than 2, as prime numbers start from 2.

• Iterate from 2 to the square root of the number and check if the number is divisible by any of these numbers.

• If the number is not divisible by any number in the range, then it is a prime number.
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Q1. Basic Machine Learning Question
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Q2. Ask about Previous work or project
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Q1. What is Ram? What is Rom?
Ans. 
RAM stands for Random Access Memory, a type of computer memory that can be accessed randomly. ROM stands for Read-Only Memory, a type of memory that stores data permanently.
• RAM is volatile memory used by the computer to store data and program instructions temporarily.

• ROM is non-volatile memory that stores firmware and cannot be easily modified or deleted.

• RAM is faster but loses data when power is turned off, while ROM ...read more
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Q2. Which language understand the computer?
Ans. 
Computers understand machine language, which is a set of binary codes representing instructions that the computer can execute.
• Computers understand machine language, which consists of binary code representing instructions.

• High-level programming languages like Python, Java, C++ are used to write code that is then translated into machine language.

• Compilers and interpreters are used to convert high-level code into machine
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Q1. What is the machine language?
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Machine language is the lowest-level programming language that directly corresponds to instructions executed by a computer's CPU.
• Machine language consists of binary code representing instructions that can be executed by a computer's central processing unit (CPU)

• It is the lowest-level programming language and is specific to the type of CPU being used

• Machine language is difficult for humans to read and write, as it is co...read more
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Q1. What does BIOS works for?
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BIOS works as a firmware that initializes hardware components during the boot process of a computer.
• BIOS stands for Basic Input/Output System

• It is responsible for initializing and testing hardware components like the CPU, memory, and storage devices

• BIOS also provides the necessary instructions for the operating system to boot up

• It is stored on a ROM chip on the motherboard
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Pandas and SQL questions and some business case

Q1. The head of the vertical took interview, explained role and asked about my experience.
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Q2. What project did you work on?
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Q1. A senior data scientist asked technical questions on my experience.
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Q2. What is the advantage or lstm over rnn.
Ans. 
LSTM has better memory retention than RNN.
• LSTM can remember long-term dependencies better than RNN.

• LSTM has a gating mechanism that controls the flow of information.

• LSTM can handle vanishing gradient problem better than RNN.

• LSTM is more suitable for tasks that require long-term memory, such as speech recognition and language translation.
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Q3. What is multicollinearity and what are its effects?
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Multicollinearity is a phenomenon where two or more independent variables in a regression model are highly correlated.
• It can lead to unstable and unreliable estimates of regression coefficients.

• It can make it difficult to determine the individual effect of each independent variable on the dependent variable.

• It can also result in inflated standard errors and p-values, making it difficult to identify statistically signif...read more
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Q1. Tell me about your self
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Q2. SQL basics
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Q3. Banking terms
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