Cognizant hiring team coding test

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The greatest thing you can do is develop a list of the most popular HR interview questions and practice answering them. You should have the answers to these questions at your fingertips. Another crucial thing to keep in mind while going for an interview is to look and behave confidently. Keep in mind that you should not lie or be overconfident. Having excellent body language can make all the difference. The fill factor is the percentage of space on each leaf-level page that will be filled with data.

Depending on the size of the row, each page can store one or more rows. The Fill Factor's default value is , which is the same as the value 0. The SQL Server will fill the leaf-level pages of an index with the highest number of rows it can fit if the Fill Factor is set to or 0. When the fill factor is , the page will have no or very little vacant space. Index hunting is the method of boosting a collection of indexes. This is done because indexes improve query performance as well as query processing time.

In SQL, a view is a single table that contains data from other tables. As a result, a view features rows and columns that are identical to those of a real table, as well as fields from one or more tables. In the above queries, Column1, Column2,.. ColumnN denotes the name of the columns to be added or updated. SJF Shortest Job First is a scheduling policy that prioritizes the waiting process with the shortest execution time.

It is a scheduling algorithm that is not preemptive that is, one process cannot snatch the resources assigned to a currently running process. The procedure, next in the queue, with the least amount of time till completion is chosen to be executed in this scheduling technique.

One of the factors is that it is dependent on how frequently a deadlock is likely to occur when this algorithm is implemented. The other is the number of processes that will be affected by deadlock if this algorithm is used. In dynamic loading, a routine is not loaded until it is called. This strategy is very effective when dealing with vast quantities of code, such as error routines, that occur infrequently.

All routines are saved in a relocatable load format on the disk. The main program is executed after it has been loaded into memory. When a routine requires to call another routine, the calling routine checks to verify if the other routine is loaded first. If this is not the case, the relocatable linking loader is used to load the requested routine into memory and update the program's address tables.

The newly loaded routine is then given control. In this way, dynamic loading helps in better memory space utilization. The root partition is the place where the operating system kernel is located. Other potentially crucial system files that are mounted during boot time are contained in it as well.

An abstract layer on top of a more concrete file system is a virtual file system VFS or virtual filesystem switch. Caching is a technique for saving numerous copies of the most frequently used data in a temporary storage area or cache so that they can be accessed more quickly.

It keeps data in a temporary format for software applications, servers, and web browsers, so users don't have to download information every time they visit a website or use an application. Cached data works by saving data in a device's memory for later access. The data is kept in the memory of a computer, directly below the central processing unit CPU. The primary cache level is incorporated into a device's microprocessor chip, followed by two more secondary cache levels that feed the primary level.

This information is kept until the content's time to live TTL , which specifies how long it should be cached, expires or the device's disc or hard drive cache fills up. Data is usually cached in one of two ways: browser or memory caching data stored locally on the computer or Content Delivery Networks data stored in geographically distributed locations.

Preemptive multitasking permits computer programs to share operating systems OS and underlying hardware resources. It distributes the overall operating and computing time amongst processes, and it uses established criteria to switch resources between processes. Time-shared multitasking is another name for preemptive multitasking. The operating system never initiates context switching from one process to another in cooperative multitasking. Only when the processes voluntarily cede control on a routine basis, or when they are inactive or logically blocked, does a context switch occur, allowing many applications to run at the same time.

In addition, in this multitasking, all processes work together to make the scheduling strategy work. For instance, Instead of delivering a folder or drive listing to the main screen, it can be piped and delivered to a file, or sent to the printer to print a hard copy.

A trapdoor is a software or hardware mechanism that can be used to bypass system controls. In general, it's malicious software that allows an attacker on the other side of the Internet to gain unauthorized access to a computer system or network by accepting remote commands. The TLB includes the most recently used page table entries.

The frame number is retrieved and the real address is created if a page table entry TLB hit is present. If a page table entry is missing from the TLB TLB miss , the page number is used as an index while processing the page table.

The TLB first checks if the page is already in main memory; if it isn't, a page fault is generated, and the TLB is then modified to incorporate the new page entry.

At any given time, the resident set is the part of the processed image that is actually in the real memory. It's broken down into subsets, one of which is the working set. The working set is the subset of the resident set required for execution. A bridge router, sometimes known as a brouter, is a network device that can function as both a bridge and a router. The brouter forwards all other packets like a bridge and only routes packets for known protocols.

For routable protocols, brouters function at the network layer, while for non-routable protocols, they operate at the data link layer. Brouters operate as routers for routable protocols and bridges for non-routable protocols, handling both routable and non-routable characteristics.

Brouters are connecting devices in networking systems that serve as both a network bridge and a router in the internetwork. The Exterior Gateway Protocol EGP is a protocol that allows Internet gateways from the same or separate autonomous systems to share network reach-ability information. Rather than communicating in native "languages", all Telnet clients and servers agree to deliver data and commands that conform to a fictional "virtual" terminal type known as the Network Virtual Terminal NVT.

The NVT specifies a set of standards for formatting and sending data, including character set, line termination, and how information about the Telnet session is provided.

Every Telnet client on a terminal can communicate in both its native language and NVT. When a user enters information on his or her local terminal, it is translated to NVT and sent over the network in that format. When the Telnet server receives this information, it converts it from NVT to the format required by the remote host. In reverse, the same procedure is followed for transmissions from the server to the client. The Hamming code is a set of error-correction codes that can be used to detect and fix errors that can arise when data is transferred or stored from one source to another.

Redundant bits are extra binary bits that are created and added to the data transfer's information-carrying bits to ensure that no bits are lost during the data transfer.

A parity bit is a bit that is appended to binary data to verify that the total number of 1s is even or odd. Error detection is done with parity bits. The Hamming Code is essentially the use of additional parity bits to allow for error detection. A bidirectional communication channel is provided by a pair of virtual character devices known as a pseudo TTY or "PTY". The master is at one end of the channel, while the slave is at the other. The pseudo-terminal's slave end provides an interface that is identical to that of a conventional terminal.

A process that expects to be connected to a terminal can open the slave end of a pseudo-terminal, which will subsequently be controlled by a program that has opened the master end. Anything written on the master end is supplied to the slave end's process as if it were any input entered on a terminal. Anything written to the slave end of the pseudo-terminal, on the other hand, can be read by the process linked to the master end.

Network login services, terminal emulators, and other such applications employ pseudo-terminals. BufferedWriter is a temporary data storage source. It's used to make a buffered character output stream with the default output buffer size. To flush characters from the buffered writer stream to a file, the flush function of the BufferedWriter class in Java is employed. It ensures that all data items, including the last character, are written to the file.

The close function of the Java BufferedWriter class flushes the characters from the buffer stream and then closes it. Calling methods like write and append after the stream has been closed will generate an error.

The stack is a section of memory that stores information about nested method recursive calls all the way down to the present program location. It also holds all local variables and heap references defined in the currently running procedures. This structure enables the runtime to return from the method knowing the address from which it was invoked, as well as to remove all local variables when the procedure has been exited. Every thread has a stack of its own.

The heap is a big chunk of memory used for dynamic allocation. When you use the new keyword to create an object, it is allocated on the heap. The reference to this object, on the other hand, is stored on the stack. The Garbage Collector GC must call the finalize method on an object when it becomes garbage collection eligible. Because the finalize method can only be used once, the GC marks the object as finalized and sets it aside until the next cycle.

You can technically "resurrect" an object in the finalize method by assigning it to a static field, for example. The object would revive and become ineligible for garbage collection, preventing the GC from collecting it in the next cycle.

The object, on the other hand, would be marked as finalized, thus the finalize method would not be invoked when it became eligible again. In essence, you can only use this "resurrection" method only once. The finalize method adds the items to the collection once and then resurrects them.

They have been marked as finalized and will not be queued again when they are collected a second time. Because static methods are resolved at compile time, one cannot override them in Java. Because objects are only available at runtime, overriding requires a virtual method that is resolved at runtime.

In Java, a static method can be overloaded. Overloading has nothing to do with runtime, but each method's signature must be distinct. To alter the method signature in Java, either the number of parameters, the type of arguments, or the sequence of arguments must be changed.

In Java, you can't override a private method because the subclass doesn't inherit the private method, which is required for overriding. In fact, no one outside the class can see a private method, and a call to it is handled at compile time using Type information rather than at runtime using the actual object. But there is no need for confusion as we cover all there is to know about the Cognizant recruitment process in this article.

Known for hiring thousands of engineers from the Indian subcontinent every year, Cognizant has consistently ramped up its fresh hires. They hired more than 28, engineers in and 50, in Going by this trend, the organisation is set to hire thousands of engineers in the upcoming year via their GenC and GenC Elevate programs. GenC, the abbreviation of Generation Cognizant, is a test for freshers.

GenC Elevate is a more specialised recruitment drive for candidates with foundational programming knowledge and database skills.

Besides these two, there are other advanced recruitment drives. For example, GenC Next is for technically proficient individuals with advanced programming, matured coding skills, and full-stack abilities. For this article, we will cover the more general, GenC recruitment process and tell you all the essential information you need before applying.

Want to know how to clear Accenture off-campus interviews? Click here for the entire strategy with tips and tricks! Cognizant may reject applications of students who have failed semesters, active backlogs, or pending supplementary examinations. However, you can confirm this with your college placement officer or Cognizant off-campus drive officials. All candidates should have either B. Lastly, while some students prefer taking a gap year during their academic journey, those with more than two years of gap in their studies may be at a disadvantage and face rejection from the recruitment panel.

Interested in clearing Wipro off-campus interviews? Click here to know how to ace them in five easy steps! Once you register for the Cognizant GenC recruitment drive, based on your eligibility, you will be invited for an aptitude test which can be written traditional pen-paper or online in your computer lab. This test will consist of 25 questions based on numerical ability, 35 on logical reasoning, and another 20 to quiz your verbal faculties.

You will have minutes to answer these 80 questions, but since there will be no negative marking, we advise you to attempt all the questions. However, attempting all questions in the aptitude test is more challenging than it sounds, as minutes for 80 questions translates to a quick 0.

Those who clear the aptitude test are called in for an HR interview which may involve a lot of behavioural questions intended to gauge your personality and fit with the company culture.

This round will gauge your values, attitude, leadership, and teamwork capabilities. It may also be customised further by the campus placement officials depending on the number of candidates and can include Group Discussions, Debates, Impromptu speeches, etc.

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