Sketch Consultancy Interview Questions and Answers

Traversing web pages with links in specific orders requires web scraping and following the links recursively.

• Use web scraping tools like BeautifulSoup or Scrapy to extract links from web pages.

• Implement a recursive function to follow the links in specific orders (e.g. depth-first or breadth-first).

• Track visited pages to avoid infinite loops or revisiting the same pages.

• Handle errors and exceptions when accessing web pages or following links.

Implementing a neural network for image recognition

• Research different types of neural networks such as Convolutional Neural Networks (CNNs) and Recurrent Neural Networks (RNNs)

• Study how to preprocess image data and feed it into the neural network

• Learn about popular deep learning frameworks like TensorFlow or PyTorch

• Experiment with training a neural network on a dataset like MNIST for digit recognition

To search in a dictionary, use the key-value pairs and access the value using the desired key.

• Access the dictionary using the key to retrieve the corresponding value.

• If the key is not present, handle the error or return a default value.

• Example: dictionary['key'] returns the value associated with 'key'.

Intersection of two linked lists

• Traverse both lists and compare each node

• Use a hash table to store nodes of one list and check for intersection in the other list

• Find the length of both lists, move the pointer of the longer list to the same distance from the end as the shorter list, and then compare nodes

Use a script to list relevant files updated within a given time period in a folder

• Use a scripting language like Python or Bash to iterate through files in the folder

• Check the last modified timestamp of each file and compare it to the given time period

• Create a list of files that meet the criteria and display or output them

Python is a high-level, interpreted language known for its simplicity and readability. C++ is a lower-level, compiled language with more control over memory management.

• Python is easier to learn and write code quickly compared to C++.

• C++ allows for more control over memory management and is typically faster than Python.

• Python is commonly used for neural networks due to its simplicity and readability.

• C++ is also used for neural networks when performance is a priority.

• Neural net...read more

I will use monitoring tools to receive alerts and notifications if a system goes down.

• Set up monitoring tools like Nagios, Zabbix, or Prometheus to track system health

• Configure alerts to be sent via email, SMS, or Slack when system goes down

• Implement automated scripts to restart services or systems if they fail

• Regularly check system logs for any error messages or warnings