DXC Technology Interview Questions

DXC Technology is a US-based IT services and consulting firm. It focuses on modernizing its clients' IT infrastructure, assuring the security of their clouds, optimizing their data architectures, and so on. As a result, the organizations achieve a better customer experience, greater operational performance, and numerous other advantages.

DXC is a multinational corporation with a global workforce in over 70 countries. Working across multiple projects and teams will provide a broad scope if you get hired in DXC. DXC's recruitment procedure consists of an online test, technical interviews, and an HR interview. So, if you are well-versed with DXC technology interview questions and answers, you will breeze through the DXC interview.

MindMajix presents this blog to assist DXC interview candidates with DXC technology interview questions and answers, the DXC interview process, interview tips, and more. So here's all you need to know to ace your DXC interview.

Let's get on board.

DXC Technology Interview Questions - Table of Contents

• DXC Technology Recruitment process
• DXC Technology Technical interview questions
  • Freshers
  • Experienced
• DXC Technology leadership principles
• FAQs 
• Tips
• Conclusion

Top 10 Frequently Asked DXC Technology Interview Questions

1. Explain VPN and its many variants.
2. Describe network reliability.
3. What exactly is tree traversal?
4. What do you mean by polymorphism?
5. What exactly do you understand by coupling in OOP languages?
6. What is the purpose of the SQL DSEC command?
7. What are the distinctions between SOP and OOP?
8. How is an interface different from an abstract class?
9. Differentiate between GitHub and Git.
10. List a few applications of graphs in data structures.

DXC Technology Recruitment Process

• Online Written Examination

This test requires you to answer over 100 questions within 60 minutes. It is divided into three sections: aptitude and reasoning, technical questions, and an essay.

There will be approximately 40 questions in the aptitude section to measure your verbal, aptitude, and reasoning skills.

There will be around 60 questions in the technical section covering several essential computer science areas such as C, Java, C++, Python, DBMS, OS, computer networking, data structures and algorithms, etc. In the essay section, you will be assigned a topic to write a brief essay on within the time and word restriction specified.

• Technical Interview round

This is the decisive round. The interview team will put your technical knowledge to the test by asking numerous questions regarding core computer science topics. The topics may be operating systems, data structures, algorithms, database management systems, etc. You must be well-versed in these subjects to answer questions ranging from the fundamentals to the advanced.

The interview team may request you write code for simple-to-medium-level problems. You must also explain why you wrote those codes and the logic behind them. So, you must be proficient in C, Python, C++, Java, and other modern programming languages. Aside from that, the team will question you about your previous work, internships, projects you were involved in, and other material on your resume.

There may be more than one technical round based on the job description, your performance, or the decisions of the interview team.

• HR Interview round

Throughout this round, the HR team will assess your attitude, behavior, body language, abilities, soft skills, and other critical elements. They will inquire about your family history and educational background.

The team will ask about your abilities and limitations. You must provide substantial evidence to back up your positives. When discussing your limitations, you must answer in such a way that the questioning team does not form negative impressions of you.

They may ask if you are available for weekends, work shifts, or relocate. So, you must be prepared to respond to these queries immediately.

DXC Technology Technical Interview Questions

If you are familiar with DXC Technology interview questions and answers, you will breeze through the DXC interview. MindMajix content experts prepared the top 30 DXC technology questions and grouped them into two categories: freshers and experienced. You can navigate to the appropriate section based on your level of knowledge. 

• DXC Technology Interview Questions For Freshers
• DXC Technology Interview Questions For Experienced

DXC Technology Interview Questions For Freshers

1. Explain VPN and its many variants.

VPN stands for Virtual Private Network. We can safeguard computer networks from attacks and unauthorized access by using a VPN. VPN encrypts the data being transferred using the real-time encryption mechanism. As a result, only those with permission can view the encrypted data. Nobody else can access the encrypted data.

The following are the many VPN types:

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2. Name the OSI model's several layers.

The below image shows the seven layers of the ISO model.

3. Describe network reliability.

Network reliability is the capacity of a computer network to recover from failures. In other words, it represents the time a network takes to return to its normal condition following a failure.

Know that Network monitoring systems will help assess network reliability. Catastrophe, Downtime, and failure frequency are the three essential elements that play a vital role in the reliability of a computer network.

4. What role do routers play in computer networking?

We can join two or more networks as well as sub-networks using routers. Routers provide two critical functions as listed below:

• It enables multiple devices to share a single internet connection.
• It sends data to the specified IP addresses.

5. What exactly is tree traversal?

It is a data structure that uses nodes to form a tree shape. 

Three tree traversal types are mentioned below:

• in-order traversal
• pre-order traversal
• post-order traversal

6. Define encapsulation in C++ and why it is necessary.

It is the process of putting the same functions or data members in many classes. As a result, we can conceal important information from users.

Encapsulation improves data security and allows for greater control of data members. So, we can change one section of a program without affecting the others.

[Related Article: C++ Interview Questions]

7. What do you mean by polymorphism?

It's one of the fundamental concepts in object-oriented programming. Polymorphism allows using functions, variables, or objects in many forms. For example, we can descend from the class 'animal' into several subclasses, such as dogs, cats, deer, etc.

Understand that there are two kinds of polymorphism, as listed below:

• runtime polymorphism 
• compile-time polymorphism.

8. List the benefits and drawbacks of OOP languages.

Know that C, Python, C++, and Java are well-known OOP languages.

Advantages:

• We can use the written codes of OOP languages several times. Classes are essential in this regard.
• We can use the same functionality in multiple classes. In other words, we can apply inheritance to many objects.
• Abstraction is one of the key OOP concepts that helps hide unneeded information from users and allows them to see only the relevant data.

Disadvantages:

• Developers must be well-versed in OOP programming. Otherwise, coding is challenging.
• OOP programs are often lengthier in size, resulting in slower execution times.

9. What exactly do you understand by coupling in OOP languages?

Coupling represents the degree of proximity between two classes in a program. In OOP languages, there are two forms of coupling: tight coupling as well as loose coupling.

In tight coupling, changes in one class will affect the class coupled with it.

In loose coupling, changes to one class do not affect the class that is connected to it.

[Related Article: OOPs Interview Questions]

10. What exactly is bootstrapping in an operating system?

When we turn on a computer, the first code that runs is Bootstrap. The bootstrap program is entirely responsible for an operating system's performance. This is because the bootstrap program loads the operating system into RAM, after which the operating system activates the computer's drivers. Note that the bootstrap program is typically placed in the ROM.

A bootstrapping process often begins with hardware processes and then progresses to software procedures. It also runs self-tests, configures settings, loads BIOS, etc.

11. What are the applications of FCFS algorithms?

FCFS is the short form of First Come, First Serve. It is one of the most basic algorithms. It is compatible with both preemptive as well as non-preemptive scheduling. It assigns CPU processes on a first-come, first-served basis. According to this algorithm, while a CPU runs a process, the following process in the queue must wait until the current process is completed. At times, the following process may have to wait for a longer period.

This algorithm does not promote priority or changes in burst time. Because of these characteristics, this algorithm performs poorly.

12. What exactly is "data dependency" in the context of DBMS, and what are its many forms?

Data dependence is the relationship between the attributes of data stored in a database table. In other words, the data in a database table is related to other data in the same table.

There are several sorts of database dependencies, as depicted in the graphic below:                                               

13. What is the purpose of the SQL DSEC command?

The DSEC command is also known as the DESCRIBE command. This command returns information about a table's schema. Using this command, we may obtain information like column data types, column name, and the constraints applied to the column. Simply put, we may get the table's metadata.

This command's syntax is as follows:

14. List the advantages of multithreading.

The following are the key advantages of multithreading.

• It increases throughput.
• It makes better use of system resources.
• It allows for rapid context change.
• It increases server response time.
• It helps to improve inter-process communication.

15. What do you understand by preemptive multitasking?

Every process under preemptive multitasking can use computer resources for equal times. As a result, no single operation may hold computational resources for an extended period. However, it devotes additional time to specific procedures based on their importance.

The operating system uses the interrupt mechanism to terminate the allocation of resources to a process. After that, the resources will be allocated to another process.

DXC Technology Interview Questions For Experienced

16. What are the distinctions between SOP and OOP?

SOP	OOP
SOP stands for "Structured Oriented Programming."	OOP stands for Object Oriented Programming.
It allows the development of programs using functions and modules.	It allows the creation of programs using objects and their interactions.
It breaks down programs into smaller functions.	It divides programs into objects.
It concentrates on structures and code.	It is concerned with data and functions.
It takes a top-down strategy.	It takes a bottom-up strategy.
We can't quickly switch programs.	We can quickly switch between programs.
We cannot employ access modifiers.	We can use access modifiers such as public, private, and protected.

17. Create a Java code that prints a half pyramid with numbers.

Program:

Code:

18. How is an interface different from an abstract class?

Interface	Abstract Class
It only contains abstract methods.	It has both abstract as well as non-abstract methods.
It only allows for final and static variables.	It supports variables that are final and non-final. It also supports static and non-static variables.
To declare an interface, we utilize the interface keyword.	To declare an abstract class, we utilize the abstract keyword.
It allows for multiple inheritances.	It does not allow for multiple inheritances.
There are no access modifiers.	It includes access modifiers.
It is unable to declare constructors or destructors.	It can declare constructors as well as destructors.
It can extend multiple interfaces at once.	It can only be extended to one class at a time.

19. Can we construct an instance of an abstract class?

We cannot construct an instance of an abstract class because it is nothing but a declared abstract. But at the same time, we can make subclasses of an abstract class.

20. Differentiate between GitHub and Git.

GitHub	Git
Microsoft manages this web-based hosting service.	It is the open-source software that Linux maintains.
It is, essentially, a cloud service.	We can install Git on local PCs. We don't require servers to work with Git.
We can employ a cloud-based graphical user interface.	We must employ the command-line tool.
We can keep all codes in one place.	We can push, pull, reset, commit, and merge codes.
It serves as a repository for Git.	It is similar to a version control system in that it monitors the history of code updates.
It includes user management features.	It lacks user management features.

21. Contrast a Kernel with an Operating System.

Kernel	OS (Operating System)
It is a necessary part of any operating system.	It is the system software.
Its primary function is memory management.	The operating system is in charge of computer security.
It translates a query into machine code.	It manages the computer hardware and software.
It serves as a bridge between an application and hardware.	It serves as a bridge between hardware and users.
A kernel is essential to run an operating system	We cannot run computers without operating systems
Kernels come in several varieties, including microkernels and monolithic.	Single OS, multiprocessor OS, and multiuser OS are examples of operating systems.

22. Explain briefly how dangling pointers operate in C programming.

If we do not properly initialize a pointer, it will cause issues in the program. This pointer is referred to as a dangling pointer.

Because of the following factors, a pointer becomes dangling:

• When we call a function, there is a potential that a pointer will become dangling.
• A dangling pointer is created if we do not deallocate memory without altering a pointer.
• When a variable exits the scope, the pointer indicating the variable becomes a dangling pointer.

23. Can we run a C program without using the main ()?

Yes, we can run a C program without using the main () function. But, we must utilize the preprocessor directive #define to do so.

We can run C code in the following approaches without utilizing the main () function.

• with a macro defining the main
• with an argument macro
• utilizing the token-pasting operator
• while compiling codes, changing the entry point

24. Why do you declare a variable as volatile?

It instructs the compiler that the variable can be adjusted externally. It avoids compiler optimization on the variable reference.

25. Do you know why ‘C’ is referred to be the "mother of all programming languages"?

‘C’ is the language that includes many vital concepts and introduces various data structures such as arrays, strings,  functions, lists, etc. These fundamental concepts and data structures are the foundation of all subsequent programming languages. That’s why C is known as the mother of all programming languages.

26. Explain how swapping improves memory management.

Swapping is a method that allows us to move a process from main memory to secondary memory. As a result, it frees up memory for other processes.

In reverse, we can move processes from secondary to main memory. So we can run several large-sized processes in parallel using the swapping approach. It is vital to note that one main memory can support multiple processes.

Furthermore, this swapping strategy prevents processes from sitting in the execution queue. As a result, it considerably improves processor speed.

27. Is it feasible to store NULL values and NULL keys in Java HashMap?

Yes, we can store a single NULL key in a Java HashMap and hold this key in the bucket array. HashMap generally does not use the HashCode () function for the NULL key, but Java HashMap allows us to store several NULL values.

Hashtable, on the other hand, does not support storing NULL values or NULL keys. It will throw a runtime exception if we try to store NULL values and keys.

28. Mention the constraints of inheritance.

The following are the constraints of inheritance.

• The inherited functions operate at a slower rate than other functions.
• Because inheritance provides a connection between a base class and a derived class, changing the base class will undoubtedly affect the derived class.
• We will experience errors if we do not use inheritance correctly.
• If we do not use the data members of a base class, we risk wasting memory.

29. List a few applications of graphs in data structures.

• We can determine the flow of programs for execution
• It is widely used in Google Maps, Facebook, and LinkedIn
• Operating systems use graphs for resource optimization
• We use graphs to model data in data engineering
• It is also used in blockchain technology

30. What if you unlock a non-recursive Mutex several times?

We typically use threads to lock non-recursive mutexes. If a thread that locks a non-recursive mutex tries to lock it again, it is moved to the mutex's waiting list. It results in a deadlock condition because no other thread can unlock the mutex.

DXC Technology FAQs

1. How to get ready for DXC interviews?

You should increase your aptitude, reasoning abilities, and essay-writing skills. You should also be proficient in coding and have a solid understanding of computer foundations. You should thoroughly prepare for the HR interview to answer behavior-based questions.

2. What do the DXC CLEAR values mean?

DXC CLEAR is an acronym for Client-focused, Execution, Leadership, Aspiration, and Results. It is these five characteristics that motivate every DXC employee to perform better.

3. What are the different DXC interview procedures?

The DXC interview process consists of three rounds: a written test, technical interviews, and an HR round.

4. What are the most common technical questions asked in DXC interviews?

You will be required to create code for a few tasks. DXC will ask you technical questions about operating systems, data structures and algorithms, DBMS, OOPs ideas, computer networks, etc. You must be able to answer questions quickly and code quickly.

5. What makes DXC want to hire you?

You might respond to this question as follows: I have the talents and abilities required to work at DXC. I will use my skills and knowledge to benefit DXC and myself if i get hired.

6. What does DXC technology stand for?

DXC is not a short form of anything. It embodies the company's objective, which is to apply digital transformation to its clients in all feasible ways.

7. What is the starting salary for software professionals at DXC?

It is approximately 4 LPA.

8. Is the DXC technology interview challenging to pass?

No, you can easily pass the DXC interview if you make genuine preparation efforts. Otherwise, yes, it won't be easy.

DXC Technology Leadership Principles

Know that DXC leaders practice a few leadership concepts to drive their people to perform better and produce the best results for the company.

Let's have a look at them in the parts that follow.

• Delivering Excellence

According to DXC Technology's mission statement, the firm is devoted to providing outstanding service and support to its customers and employees. So the company's leaders strive to build a better future for their people in all possible ways.

• Showing Integrity

DXC technology leaders display integrity in their actions because they want to increase confidence among employees and customers. This is one of the reasons they may be able to keep their finest personnel for a longer time.

• Openness

DXC technology leaders have framed codes for regulating employee behavior.  If any employee experiences discomfort or an issue at work, they can bring it up through the specified channels without hesitation or fear.

• Embracing diversity and inclusion

DXC technology leaders have created a wonderful working environment for their workforce to collaborate and excel at extreme levels. Employees can work seamlessly with others regardless of race, color, ethnicity, language, religion, etc.

Tips to clear the DXC Technology Interview

You must know a few other essential things besides practicing with DXC technology interview questions and answers if you want to clear the DXC technology interview in no time.

Tip#1: Coding Practice

You must continue to code in programming languages until you are fluent in them. You must be able to code quickly and with good quality, but the essential thing is to practice regularly. In this regard, you can use numerous online platforms to practice coding.

Tip#2: Highlight your Strengths

Make a list of all your strengths. When you get the right questions, showcase your strengths to the interview team. You can briefly explain to the interviewers how DXC would be the right platform to apply your strengths, and you can also mention the outcomes.

Tip#3: Thoroughly research DXC

You must research DXC without leaving a stone unturned. You must have the mission, vision, principles, key leaders, core values,  achievements, milestones, and more at your fingertips. You must demonstrate your interest in DXC by sharing more information about the DXC technology.

Tip#4: Learn from previous candidates

You can listen to other candidates' interview experiences on YouTube or other platforms. Many candidates post their experiences on specific website portals, which you can read to understand how the DXC interview process would work and the interviewers' expectations.

Tip#5: Show Confidence

You must respond to your questions enthusiastically and confidently. Your responses and presentation must be impressive and instant. Answering questions confidently shows you have solid control over your knowledge and talents.

Conclusion

It's time to wrap things up! We hope you've read through the top 30 DXC technology interview questions in this blog, as well as the DXC interview process, DXC interview tips, DXC leadership principles, and many more.

The important thing is that you must hone your technical expertise and coding skills to nail the DXC interview quickly. Core Java Training offers training on various core computer concepts. If you want to enhance your technical knowledge, you can register for the courses and get a certification, which will simplify your journey toward getting a job at DXC.