20+ TCS Interview Questions and Answers

KMP Search Algorithm is a string searching algorithm that finds occurrences of a word within a main text.

• KMP algorithm is based on the idea of pre-processing the pattern to avoid unnecessary comparisons.

• It uses a prefix function to determine the longest proper prefix of the pattern that is also a suffix.

• This allows the algorithm to skip characters in the text that cannot be part of the pattern, improving efficiency.

Shares and bonds are types of investments. Shares represent ownership in a company, while bonds are debt securities issued by governments or corporations.

• Shares represent ownership in a company, giving the shareholder voting rights and potential dividends.

• Bonds are debt securities issued by governments or corporations, where the issuer promises to repay the bondholder the principal amount plus interest at a specified date.

• Shares are considered riskier but offer higher potenti...read more

Addressing mode is a technique used in computer architecture to specify how to calculate the effective address of an operand.

• Addressing mode determines how the CPU accesses data from memory

• Types of addressing modes include direct, indirect, indexed, and register

• Examples: direct addressing mode - MOV A, 1000H, indirect addressing mode - MOV A, [BX], indexed addressing mode - MOV A, [BX+SI], register addressing mode - MOV A, BX

Corporate action refers to events initiated by a public company that impact its shareholders and securities.

• Types of corporate actions include dividends, stock splits, mergers and acquisitions, rights issues, and bonus issues.

• Dividends are payments made to shareholders from a company's profits.

• Stock splits involve dividing existing shares into multiple shares to lower the share price.

• Mergers and acquisitions are when two companies combine or one company takes over another.

• Rig...read more

TCP is a transport layer protocol while OSI is a reference model for network communication.

• TCP is a protocol responsible for establishing and maintaining a connection between two devices.

• OSI is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven abstraction layers.

• TCP operates at the transport layer (Layer 4) of the OSI model.

• OSI model includes layers like physical, data link, network, transport, session, presentation, ...read more

The most difficult accounting situation I handled was resolving a complex financial discrepancy in a multinational company.

• Identifying and reconciling discrepancies in financial records

• Coordinating with multiple departments and stakeholders

• Analyzing large volumes of data to identify the root cause

• Implementing corrective measures to prevent future discrepancies

• Ensuring compliance with accounting standards and regulations

A derivative is a financial contract whose value is derived from the performance of an underlying asset, index, or interest rate.

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

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

• For example, a stock option gives the holder the right to buy or sell a stock at a specified price within a certain time frame.

Iterate through the linked list and reverse the pointers in 3 steps

• Iterate through the linked list and keep track of the previous, current, and next nodes

• Update the pointers to reverse the direction of the nodes

• Repeat the process until the end of the linked list is reached

Cascade refers to the automatic propagation of changes made to a parent record to its related child records.

• Cascade is a feature in database management systems that ensures data consistency and integrity.

• It allows changes made to a parent record to be automatically reflected in its related child records.

• For example, if a parent record is deleted, all its child records will also be deleted automatically.

• Cascade can be set up for various types of actions, such as update, delete...read more

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

• Derivatives can be used for hedging risk, speculating on price movements, or gaining exposure to assets without owning them.

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

• Derivatives can be traded on exchanges or over-the-counter (OTC).

• They are often used by investors, companies, and financial institutions to manage risk or enhance returns.

Delete removes specific rows while truncate removes all rows from a table.

• Delete is a DML command while truncate is a DDL command.

• Delete can be rolled back while truncate cannot be rolled back.

• Delete is slower than truncate as it logs each row deletion while truncate does not.

• Delete can have a WHERE clause to specify which rows to delete while truncate deletes all rows.

• Delete does not reset the identity of the table while truncate resets the identity of the table.

• Example: DEL...read more