HSBC Interview Question on OS

An Operating System(OS) is software that manages and handles the hardware and software resources of a computer system. It provides interaction between users of computers and computer hardware. An operating system is responsible for managing and controlling all the activities and sharing of computer resources.

Q1. What is Resource Allocation Graph (RAG) in Operating System?
A resource allocation graph shows which resource is held by which process and which process is waiting for a resource of a specific kind. It is an amazing and straight – forward tool to outline how interacting processes can deadlock. Therefore, the resource allocation graph describes the condition of the system as far as processes and resources are concerned like what number of resources are allocated and what is the request of each process.

Q2. What is Process Control Block in OS ?
A Process Control Block (PCB) is a data structure that is used by an Operating System to manage and regulate how processes are carried out. In operating systems, managing the process and scheduling them properly play the most significant role in the efficient usage of memory and other system resources.

Q3. What is Demand Paging in Operating System?
Demand paging can be described as a memory management technique that is used in operating systems to improve memory usage and system performance. Demand paging is a technique used in virtual memory systems where pages enter main memory only when requested or needed by the CPU.

Q4. What is IPC?
IPC stands for Interprocess Communication. It is a medium for the communication of processes. It is a technique where an operating system allows all the independent processes to interact or communicate with each other within a single or multiple systems connected via a network. At the same time, it can handle many requests. We can also say that it is used for sharing data between multiple threads in one or more processes.

Q5. What is Fragmentation in Operating System?
The process of dividing a computer file, such as a data file or an executable program file, into fragments that are stored in different parts of a computer’s storage medium, such as its hard disc or RAM, is known as fragmentation in computing. When a file is fragmented, it is stored on the storage medium in non-contiguous blocks, which means that the blocks are not stored next to each other. 
 

Q6. Write a difference between a user-level thread and a kernel-level thread?

Q7. What is Process Synchronization?
Process Synchronization is the coordination of execution of multiple processes in a multi-process system to ensure that they access shared resources in a controlled and predictable manner. It aims to resolve the problem of race conditions and other synchronization issues in a concurrent system

Q8. What is a semaphore explain?
Semaphores are just normal variables used to coordinate the activities of multiple processes in a computer system. They are used to enforce mutual exclusion, avoid race conditions, and implement synchronization between processes.

Q9. What is a Banker’s algorithm?
The banker’s algorithm is a resource allocation and deadlock avoidance algorithm that tests for safety by simulating the allocation for the predetermined maximum possible amounts of all resources, then makes an “s-state” check to test for possible activities, before deciding whether allocation should be allowed to continue.

Q10. What is Belady’s Anomaly?
Bélády’s anomaly is the name given to the phenomenon where increasing the number of page frames results in an increase in the number of page faults for a given memory access pattern.

Explore these carefully selected HSBC interview questions to prepare for a successful career move with this renowned global bank. Understand the kinds of questions they might ask in technical assessments and when solving problems. Elevate your readiness for interviews by delving into these questions. HSBC, which stands for the Hong Kong and Shanghai Banking Corporation, is a major global bank with a rich history dating back to 1865. Renowned for its international presence, HSBC provides a wide range of financial services, serving millions of customers worldwide. The bank is recognized for its commitment to innovation, diversity, and fostering a dynamic work culture. Discover the exciting career prospects and fantastic work culture at HSBC, and gear up for a fulfilling journey with this leading international financial institution.

Landing your desired position at HSBC isn’t just about technical skills – it also involves understanding how they conduct interviews. This article takes a close look at what to expect in HSBC’s interviews, providing insights into the types of questions you might come across.