10+ UBS Interview Questions and Answers

Arrow functions are a concise way to write functions in JavaScript.

• Arrow functions have a shorter syntax compared to regular functions.

• They do not have their own 'this' keyword, and instead inherit 'this' from the parent scope.

• Arrow functions are best suited for non-method functions, and cannot be used as constructors.

• Example: const add = (a, b) => a + b;

Use self join in a DBMS query to find the employeeid of the manager whose employee name is 'something'.

• Use a self join on the table to compare employee and manager names

• Order the results by employeeid in descending order to get the second highest employee

• Select the manager's employeeid where the employee name is 'something'

Reverse a linked list by changing the next pointers of each node to point to the previous node.

• Start with three pointers: current, prev, and next.

• Iterate through the linked list, updating the next pointers to point to the previous node.

• Update prev, current, and next pointers in each iteration until the end of the list is reached.

Runtime polymorphism is the ability of a subclass to override a method from its superclass during runtime.

• Runtime polymorphism is achieved through method overriding in object-oriented programming.

• It allows a subclass to provide a specific implementation of a method that is already defined in its superclass.

• The actual method called is determined by the type of object at runtime.

• Example: Animal class has a method 'makeSound', Dog subclass overrides it with 'bark', Cat subclass ...read more

Abstraction in OOP is the concept of hiding complex implementation details and showing only the necessary features to the outside world.

• Abstraction allows us to focus on what an object does rather than how it does it

• It helps in reducing complexity and improving maintainability of code

• Example: A car is an abstraction of various components like engine, wheels, etc. Users interact with the car without needing to know the internal workings

CTE stands for Common Table Expression in SQL, used to create temporary result sets that can be referenced within a SELECT, INSERT, UPDATE, or DELETE statement.

• CTEs improve readability and maintainability of complex queries

• CTEs can be recursive, allowing for hierarchical data querying

• CTEs are defined using the WITH keyword followed by the CTE name and query

B Trees are used for indexing in databases and file systems.

• Used for efficient searching, insertion, and deletion operations in databases.

• Helps in maintaining sorted data for quick retrieval.

• Commonly used in file systems to store large amounts of data efficiently.

• Each node in a B Tree can have multiple children, reducing the height of the tree.

Reactor boiler chilling pumps include centrifugal pumps, positive displacement pumps, and axial flow pumps.

• Centrifugal pumps are commonly used for high flow and low-pressure applications.

• Positive displacement pumps are used for high-pressure applications.

• Axial flow pumps are used for high flow and low-pressure applications.

• Examples of reactor boiler chilling pumps include end suction pumps, split case pumps, and vertical turbine pumps.

A chiller works by circulating a refrigerant through a cycle of evaporation, compression, condensation, and expansion.

• The chiller uses a refrigerant to absorb heat from the water or air being chilled

• The refrigerant evaporates at low pressure and absorbs heat

• The refrigerant is then compressed, which increases its temperature

• The compressed refrigerant then condenses, releasing the heat it absorbed

• The refrigerant is then expanded, which lowers its temperature and pressure, and t...read more

Derivatives are financial instruments whose value is derived from an underlying asset or group of assets.

• Derivatives can be used for hedging, speculation, or arbitrage.

• Common types of derivatives include options, futures, forwards, and swaps.

• Derivatives allow investors to take positions on the price movements of assets without owning the assets themselves.

• They are often used to manage risk in financial markets.

• Derivatives are traded on exchanges or over-the-counter (OTC) mark...read more

A hedge fund is an investment fund that pools capital from accredited individuals or institutional investors and invests in a variety of assets.

• Hedge funds are typically only available to accredited investors due to their complex and risky nature.

• They often use leverage and derivatives to amplify returns.

• Hedge funds charge both a management fee and a performance fee based on the fund's profits.

• They can invest in a wide range of assets including stocks, bonds, commodities, and...read more

I have a proven track record of successfully selling specialty products by understanding customer needs and providing tailored solutions.

• Identify target market for specialty product

• Understand unique selling points of the product

• Tailor sales pitch to highlight benefits for customers

• Provide excellent customer service to build trust and loyalty

• Track sales performance and adjust strategies as needed