21 Days to Prepare CS Core Subjects For Placements - OS, DBMS, CN & Software Engineering
Last Updated : 20 Sep, 2024
Interview Preparation can be considered a complex part for a fresher. Although, Interview Preparation for a fresher can be summarised using a few CS core subjects preparing these subjects and considering the time limitation can boost the preparation.
In this article, we will focus on crucial Computer Science Subjects like Operating Systems, Database Management Systems, Computer Networks, and Software Engineering. Over the next three weeks, we will focus on Important topics of these subjects that are expected to come in Interviews.
So, let us check how to prepare CS core subjects for the Interview in 21 days.
What are CS core Subjects?
When it comes to the curriculum of any institution related to the computer science field, there are always some common theory subjects apart from coding and data structures i.e. DBMS (Database Management System, OS (Operating Systems), CN (Computer Networks), COA (Computer Organisation Architecture), Software Engineering and System Design. These theory subjects are considered to be equally important for a fresher to learn in terms of cracking the interview process. In the upcoming article, we will be discussing the importance of CS core subjects in the interview process to become an SDE.
Importance of CS Core Subjects in Interviews
CS core concepts such as Operating Systems, DBMS, Computer Networking, and SQL are considered to be equally important for clearing your SDE interviews and getting placed. In this article, we will be exactly providing what you need as it will help you master these topics so you are thoroughly prepared for your dream job in tech giants such as Microsoft, Adobe, Amazon, Google, and many more.
The significance of core CS subjects should not be underestimated, even though students often skip them. It is important to understand that these theoretical concepts, alongside mastering DSA (Data Structures and Algorithms), are essential to prepare. Familiarizing yourself with these foundational topics will not only enhance your performance in technical interviews but will also provide a competitive advantage over candidates who possess similar coding skills. Now let's see what are the most important topics of these core subjects.
A. DBMS (Database Management System) [1st -5th Day]
A database Management system is considered the second most important subject after Data Structure and algorithms. DBMS is a software application that allows you to manage, organize, and manipulate databases. It provides an interface for users to interact with the database to perform various operations and ensure the efficient storage and retrieval of data. Now let's see what are the most asked topics of DBMS.
- Basics of DBMS
- Relational Algebra
- Normalization
- Transactions and Concurrency Control
- SQL Tutorial
Useful links:
B. Operating Systems: [6th -12th Day]
The second subject in this series is Operating Systems, OS is one the vastest subject among all other subjects as understanding operating systems is a must for a developer in order to know the internal working of the machine on which he/she is working. In some interviews it becomes the reason for the rejection of the candidates, not only in interviews but also in national qualifiers it can be the reason for the elimination of the candidates. So it becomes necessary to prepare yourself for the best, and to do the same we have curated the topics which can be asked in the interview of OS. Let's see what are those:
- Introduction of Operating System
- Process Management
- CPU Scheduling in OS
- Process Synchronization
- Critical Section Problem Solution
- Deadlocks & Deadlock Handling Methods
- Memory management
- Page Replacement Algorithms
Useful links:
C. Computer Networks:[ 13th - 16th Day]
Computer Networks is not asked that much in SDE interviews but there is always a probability of encountering a question related to the basics of networking. Understanding computer networks is essential if you are applying for network administrators, system administrators, network engineers, or anyone who is going to be involved in managing or maintaining network infrastructure. It becomes necessary to understand this subject because it would be helping you when there would be candidates with the same knowledge as yours except for computer networks, at that time your candidature would proceed. So, without further ado let's see what the most probably asked topics related to Computer networks are:
- Basics of Computer Networks
- Data Link Layer
- Network Layer
- Transport Layer
- Application Layer
Useful Links:
D. Software Engineering: [17th - 21st Day]
This is the last subject of our series and the subject name itself imitates the meaning Software Engineering means the practice of designing, developing, testing, and maintaining software systems. It is a multidisciplinary field that includes technical skills, problem-solving abilities, and collaboration. In any interview process of any organization, the interviewer expects you to have a little knowledge of software development life cycle, different lifecycle models, how the workflow is created and managed as you would be assigned the projects in the future so for that you need to a have a little knowledge of Software Project Management too. Learning Software engineering would prioritize you in any interview process. So, without wasting any time let's explore the most asked topics of Software Engineering:
- Introduction
- Software Development Life Cycle
- Software Project Management
- Software Requirements
- Software Testing and Debugging
Conclusion
Learning DSA and competitive programming is a good practice but ignoring CS core subjects may not be a good practice for you. To clear interviews without any difficulties you have to make sure that you have prepared the above-mentioned subjects thoroughly. All the above-mentioned topics are the most asked topics of all time in technical interviews. So, prepare them well, and all the best for your interviews.
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