Wipro Interview Questions and Answers for 2025

Both delete() and free() are used to dynamically deallocate memory. 

The C library function free() can also be used in C++, although the term "delete" is a C++ keyword. 

The delete operator destroys a pointer created using the new operator or a NULL pointer, whereas the free() function destroys a pointer allocated with the malloc(), calloc(), or realloc() methods or a NULL pointer. 

When the delete operator in C++ eliminates the allocated memory, it executes the class's destructor, but the free() method does not; it simply frees the memory from the heap. 

Some of the most significant characteristics of an operating system are as follows: 

• The operating system enables several apps and peripheral devices to share the computer's memory and CPU time. 
• An operating system acts as a communication bridge between the user and the computer hardware (interface). An operating system provides a user interface, such as a graphical user interface or a command line. 
• An operating system includes the ability to boot the machine. 
• It maintains peripheral devices and does simple tasks such as keeping track of all devices attached to the system, naming a program called the Input/Output Controller that oversees each device, and so on. 
• It provides file management, which is the process by which an operating system keeps, retrieves, manipulates, and saves data. 

Time slicing allows a job to run for a predetermined period before returning to the pool of available tasks. The executable job is then determined by the scheduler based on the priority and a range of other variables. In a time-slicing approach, a job executes for a set period. If another job with a higher priority is finished after that task, the scheduler performs the priority task next, depending on priority and other factors. 

The following are the benefits of time slicing in CPU scheduling: 

• CPU resources are allocated equitably. Our CPU's kernel does not just devote all our computers' resources to a single job or service. Our kernel manages these processes without delay since the CPU is always executing several processes that are essential for it to function. 
• It gives equal weight to all processes. The CPU does this by running processes one by one, slice by slice. A time slice is a short amount of time assigned to a task and performed by the CPU. 
• It's easy to include into the system. 
• After a given time, a process is interrupted, and another process runs for the same amount of time. 
• The context switching strategy is used to save the states of preempted programs. As a result, the preempted processes' states are not lost. 

The following are the drawbacks of time slicing in CPU scheduling: 

• If the slicing time is short, the processor output will be delayed. 
• It spends a significant amount of time moving between contexts. 
• Process management is greatly influenced by the time quantum/slice. 
• Priorities are not established for processes. 
• More important duties are not given priority. 
• It's difficult to come up with an appropriate temporal quantum/slice. 

SHELL is a software that serves as the user's interface to the operating system. It is the Unix operating system's command-line interface. It takes information from you and then executes programs based on that information. Once the program has completed its execution, the output is presented. 

We may use Shell to execute commands, programs, and shell scripts. The kernel manages resources between processes and regulates critical computer activities. It also limits hardware access, organizes all running utilities, and controls resources across processes. The operating system's utilities are only accessible to kernel users. 

Shell Varieties: 

• The C Shell: It contained, among other things, aliases and command history. It offers features that make programming easier, including as built-in arithmetic and C-like expression syntax. 
• The Bourne Shell is the first UNIX shell. It's more convenient and quicker. It is devoid of interactive features such as the capacity to recall previous instructions. Furthermore, it lacks built-in support for arithmetic and logical expressions. It is the Solaris operating system's default shell. 
• The Bourne shell is a subset of the Korn shell. As a result, the Bourne shell supports everything. It has interactive features. Among the features are built-in arithmetic and C-like arrays, functions, and string manipulation tools. It performs better than a C shell. 
• The GNU Bourne-Again Shell (GABS): It is compatible with the Bourne shell. It has Korn and Bourne shell functionalities. 

Indexing is a strategy for increasing database speed by minimizing the number of disc accesses required while running a query. It is a data structure method for quickly discovering and accessing data in a database. 

Indexes have the following advantages: 

• An index allows data to be readily accessed. 
• When an index is utilized in a query, the performance often improves significantly. 
• They're useful for sorting. It is feasible to avoid using a post-fetch-sort method. 
• Each entry in the database is uniquely identifiable by the index. 

The disadvantages of indexing are as follows: 

• Indexes slow down inserts, updates, and deletes. 
• Indexes take up a lot of room (this increases with the number of fields used and the length of the fields). 

SQL Server Profiler is a graphical user interface for SQL Trace (SQL Trace is a built-in SQL Server program in SQL Server 6.5 that monitors and records database activity). This tool may monitor a Database Engine or Analysis Services instance by displaying server activity, setting filters to focus on the actions of certain users, applications, or workstations, and filtering SQL instructions. You may save information about each occurrence to a file or table for further examination. 

We may use the SQL Profiler program to track SQL Server connections and discover actions such as which SQL Scripts are being executed, failed tasks, and so on. This program monitors, analyzes, troubleshoots, and tunes SQL databases and their surroundings. 

Expect to come across this popular question in Wipro interview questions for freshers.

Hybrid cloud computing offers the ability to mix on-premises infrastructure, private cloud services, and public cloud services (such as Amazon Web Services (AWS) or Microsoft Azure) with platform orchestration. 

Cloud services are a great way to transcend traditional IT limitations, allowing you to innovate more quickly, cheaply, and easily than ever before. Every technology management organization has two agendas: the IT agenda and the business transformation agenda. Historically, the IT agenda has been focused on cost-cutting. Plans for digital business transformation, on the other hand, are focused on creating money through investments. 

The key advantage of a hybrid cloud is its adaptability. To get the agility required for a competitive edge, your organization may want (or need) to integrate public clouds, private clouds, and on-premises resources.  

Eucalyptus is commercial and open-source software for building private and hybrid cloud computing environments compatible with Amazon Web Services (AWS). The business Eucalyptus Systems invented it. Elastic Utility Computing Architecture for Linking Your Programs To Useful Systems is what Eucalyptus stands for. By pooling computing, storage, and network resources, Eucalyptus enables application workloads to be easily scaled up or down. 

Some of its features include: 

• The Eucalyptus User Console allows users to customize computational, network, and storage resources. Development and test teams may govern virtual instances using built-in key management and encryption tools. 
• Eucalyptus can run various virtual machine images, including Windows and Linux. 

Users can develop a library of Eucalyptus Machine Images (EMIs) that are divorced from infrastructure details, allowing them to run on Eucalyptus clouds. 

• Storage area network devices that leverage storage arrays to improve speed and reliability are supported by Eucalyptus. Eucalyptus also supports direct-attached storage. 
• Eucalyptus 3.3 now includes new AWS compatibility capabilities. For example, resource tagging enables application developers and cloud administrators to apply customizable metadata tags to resources such as firewalls, load balancers, Web servers, and specific workloads to aid in their identification. 
• Maintenance Mode in Eucalyptus 3.3 enables cloud managers to do maintenance on Eucalyptus clouds while instances and cloud applications remain operational. 
• Among the new features in Eucalyptus 3.4 are improved image management and migration tools, warm upgrade capabilities, a hybrid cloud user dashboard to manage both Eucalyptus and AWS resources, Identity and Access Management (IAM) roles, and increased High Availability (HA). 

The Project Management Life Cycle is a collection of activities/tasks that must be accomplished in order to meet project objectives or targets. This aids in arranging and simplifying the efforts necessary to finish the project into a logical and attainable series of tasks. The Project Management Life Cycle is broken into four easy stages, which are as follows: 

The first and most crucial phase in the project's life cycle, during which the project's initial scope is decided, and resources are assigned. 

• Planning: This phase demands you to take down enough detail for the project to plan time, cost, and resources. It determines the amount of labor necessary and handles risk properly. 
• Execution: This stage comprises the processes that are used to finish the job of the project management plan. It all comes down to accomplishing the project's objectives. It also includes monitoring, evaluating, and controlling the project's progress. You must also identify potential problems and take appropriate action as soon as feasible. 
• Closure: This stage is critical in project management since it oversees the concluding of all project activities. 

This comprises completing all activities across all levels, disbanding the project team, and utilizing the project closure report to sign off on the project with the client. 

In project management, RAID stands for Risk, Actions, Issues, and Dependencies. These are critical concepts for a project manager to grasp. 

Risks are possible problems that might have an influence on the project, either positively or negatively, causing the final output to diverge from the intended plan. 

Actions are the tasks that you complete during the project. 

Issues are impediments that may arise throughout the course of a project and must be adequately handled, or the project will be derailed or fail. 

Decisions are the actions/tasks that you select for the project. 

A common question in Wipro interview questions on C language, don't miss this one.

The key distinctions between localStorage and sessionStorage objects are as follows: 

• The data in the localStorage object does not have an expiration date. The sessionStorage object, on the other hand, only stores data for one session. 
• Data in a localStorage object is not erased when a browser window is closed. However, when the browser window is closed, the data in sessionStorage objects is deleted. 
• SessionStorage data is only available in the current browser window. LocalStorage data, on the other hand, may be shared across several browser windows. 

CSS preprocessors are programming languages that extend the capability of CSS. In our CSS code, we may use variables, nesting, inheritance, mixins, functions, and mathematical operations. CSS preprocessors make it easy to automate repetitive tasks, reduce code bloat and mistakes, create reusable code snippets, and retain backward compatibility. 

The advantages and disadvantages of utilizing a preprocessor vary based on the type of project, however the following are examples of the advantages and disadvantages. 

Advantages: 

• CSS Preprocessor allows you to add variables and functions to CSS, giving it a new dimension and scope, making development easier and more efficient. It also helps with code structure and cleanliness. 
• CSS Preprocessors are a one-of-a-kind feature that allows you to merge many stylesheets into one. You may create individual files for each screen or page and then merge them into the main CSS file. 
• The CSS Preprocessor might help you prevent repeats. Rather than rewriting popular styles, write them once and then import them. 
• CSS class nesting simplifies and saves time when targeting DOM components. Nesting also makes it much easier to modify CSS files. 

Disadvantages: 

• Preprocessors require preprocessing tools. They can take a long time to recompile. 
• Even if the source files are small, the output CSS may be huge, making the request take longer to complete. 
• Choosing a preprocessor is a matter of personal preference, and it may be illuminating to observe how a developer could select one over the other for your project. 

Block 

A block-level element is rendered as a block that will always begin on a new line and will expand to take up the whole width of its container.

By default, block-level components include div>, img>, section>, form>, and nav>. 

Inline 

Inline objects are drawn where they are defined, taking up just the space needed. The simplest way to learn how they function is to see how text flows on a page.

By default, inline elements include span>, b>, strong>, a>, and input>. 

The following are some of the most important characteristics of an operating system: 

• The operating system allows several programs and peripheral devices to share the computer's memory and CPU time. 
• An operating system provides a user interface (UI), such as a graphical user interface (GUI) or a command line (CL) (OS). 
• The operating system of a computer includes features for booting it up. 
• Manage the peripheral devices and do some simple tasks. 
• It makes file management easier. File management is the process through which an operating system stores, retrieves, manipulates, and saves data. 

SQL Profiler is a profiler software that is generally used to watch SQL Server connections and determine activities such as which SQL Scripts are executing, and which are failing. 

A stored procedure is a set of SQL statements that may be executed in a variety of ways. Most database management systems, although not all, offer stored processes. By keeping the code or procedure in the system and utilizing it repeatedly, the stored process promotes reusability, making work more accessible. 

• A thread is the smallest and most insignificant processing unit, a lightweight subprocess, and a distinct execution route.  
• Threads are self-contained, which means that if one thread fails, the others are unaffected. It makes use of shared memory space. 
• The method is time-consuming and might require several threads, and it is only a small part of a larger program. 

This is a frequently asked question in Wipro HR interview questions.

If a question like this is posed, an answer like Wipro is India's leading IT firm. It offers an excellent working atmosphere. Your qualities will be valued here. The company has worked in a variety of industries and nations. Once inside, you will have several alternatives based on your professional talents. Wipro also has a nice team to work with, and the work-life balance is outstanding.

• Multitasking: As the name implies, multiple jobs run on a single CPU. We use multitasking to make the most of the CPU. 
• There are two methods to multitask: 
  • Process-based Multitasking (Multiprocessing) 
  • Thread-based Multitasking (Multithreading) 
• Multi-processing refers to a system's capacity to support many central processing units at the same time. 
• As the name indicates, several threads are operating at the same time. 
• A thread is the smallest unit of processing, a lightweight sub-process. 

The following are the primary distinctions between object-oriented and object-based languages: 

• All Object Oriented Programming notions are adhered to by object-oriented languages, however not all Object Oriented Programming concepts, such as inheritance, polymorphism, and so on, are adhered to by object-based languages. 
• Object-oriented languages lack built-in objects, whereas object-based languages do. JavaScript, for example, includes a window object. 
• Java, C#, Smalltalk, and other object-oriented programming languages are examples, whereas object-based languages include JavaScript, VBScript, and others.