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10+ Digital Engineer Interview Questions and Answers

Updated 6 Sep 2024

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Q1. 1. Why is UiPath the most preferred RPA tool in industry?

Ans.

UiPath is the most preferred RPA tool due to its user-friendly interface, scalability, and extensive community support.

  • UiPath has a drag-and-drop interface that makes it easy for non-technical users to create automation workflows.

  • It can be easily scaled to meet the needs of small businesses and large enterprises alike.

  • UiPath has a large and active community that provides support, resources, and pre-built components.

  • It offers a wide range of integrations with other tools and t...read more

Q2. 2. Explain the different types of workflows present in UiPath.

Ans.

UiPath has three types of workflows: Sequence, Flowchart, and State Machine.

  • Sequence: linear automation process

  • Flowchart: visual representation of a process with decision points

  • State Machine: automation process with states and transitions

  • Examples: Sequence - login process, Flowchart - decision-making process, State Machine - order processing

Q3. differnce between blocking and non blocking assignmenst

Ans.

Blocking assignments wait for the assigned value to be calculated before moving on, while non-blocking assignments allow for concurrent execution.

  • Blocking assignments use '=' operator and execute sequentially

  • Non-blocking assignments use '<=' operator and allow for concurrent execution

  • Blocking assignments can cause race conditions if not used carefully

  • Non-blocking assignments are commonly used in Verilog for modeling hardware behavior

Q4. Design a circuit which predicts majority ones

Ans.

Design a circuit to predict majority ones in a given input

  • Use a majority gate to determine if the input has more ones than zeros

  • Implement a comparator to compare the number of ones and zeros in the input

  • Utilize flip-flops to store and compare the bits in the input

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Q5. difference between 8051 and arm microprocessor

Ans.

8051 is an 8-bit microcontroller while ARM is a 32-bit microprocessor with higher performance and more advanced features.

  • 8051 is an 8-bit microcontroller, while ARM is a 32-bit microprocessor.

  • ARM processors generally have higher performance and more advanced features compared to 8051.

  • ARM processors are commonly used in mobile devices, embedded systems, and IoT applications, while 8051 is more commonly used in simple embedded systems.

  • ARM processors support multiple instruction...read more

Q6. design 3 input xor gate using 2:1 muxes

Ans.

Use 2:1 muxes to create a 3 input XOR gate.

  • Connect two of the inputs to the select lines of the muxes.

  • Connect the third input to the data input of one of the muxes.

  • Connect the outputs of the two muxes to the inputs of a third mux to get the XOR output.

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Q7. 3 input xnor gate truth table

Ans.

A 3-input XNOR gate truth table shows the output based on the inputs being equal or not.

  • XNOR gate output is 1 when all inputs are equal, and 0 when inputs are not equal

  • The truth table for a 3-input XNOR gate will have 8 rows (2^3) to cover all input combinations

  • Example: Input A=0, B=1, C=0 will result in output 0

Q8. Different types of memory units

Ans.

Different types of memory units include RAM, ROM, cache memory, virtual memory, and flash memory.

  • RAM (Random Access Memory) - volatile memory used for temporary storage

  • ROM (Read-Only Memory) - non-volatile memory used for permanent storage

  • Cache Memory - high-speed memory used to store frequently accessed data

  • Virtual Memory - uses disk space as an extension of RAM

  • Flash Memory - non-volatile memory used in USB drives, SSDs, and memory cards

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Q9. What is Django model

Ans.

Django model is a Python class that represents a database table and its fields.

  • Django models define the structure of database tables

  • Each model class corresponds to a table in the database

  • Models can have fields like CharField, IntegerField, ForeignKey, etc.

  • Models can also have methods to perform operations on the data

Q10. Explain any Riddle and solve.

Ans.

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person.

  • Answer: Pencil

  • Taken from a mine refers to graphite, which is used to make pencils

  • Shut up in a wooden case refers to the wooden casing of a pencil

  • Used by almost every person refers to the widespread use of pencils

Q11. Mergesort in python

Ans.

Mergesort is a popular sorting algorithm that uses a divide-and-conquer approach to sort an array.

  • Divide the array into two halves

  • Recursively sort each half

  • Merge the sorted halves back together

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