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The complex of Binary search alogrithm is___ Correct Answer O(log n) Binary search, also known as half - interval search or logarithmic search is a search algorithm that finds the position of a target value within a sorted array. In Binary search algorithm, worst case performance is O(logn), Best case performance is O(1).

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The structure required to evaluate a postfix expression is____ Correct Answer stack The postfix notation is used to represent algebraic expressions stack is used to evaluate a postfix expression.

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Which of the following correctly shows the hierachy arithmetic operation in C? Correct Answer /*+- The precedence and associativity of C operators are + + - - , */%, * = / = , and = ^ = 1 = etc.

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Which of the following can not be checked in a switch -case statement ? Correct Answer Float A switch statement allows a variable to be tested equality against a list of values. Each value is called a case. Character integer can be checked in switch - case statement.

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Which control stament can be executed at least once? Correct Answer do -while With Loop control statements, you can repeatedly execute a block of code. Three loop control statements are for, while, do - while, do - while executes at least once.

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Which one is not a basic data type of C? Correct Answer void There are 4 basic data types associated with variable in C. int – integer, float – floating point value, double – a double precision floating point value, Char – a single character.

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Which one of the following is not a valid identifier? Correct Answer my-sun The first character of an identifier name must be a nondigit ANSI allows six significant characters in an external identifier’s name and 31 for names of internal identifier.

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In java, which operator is used to create an object. Correct Answer class The object - class is the parent class of all the classes in Java by default. In other words, it is the topmost class of java.

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The operato that can not overloaded is Correct Answer ++ Sizeof is also called an operator, and it can’t be overloaded you also can’t overload typid, it’s true, but that’s not referred to as an operator anyway.

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Which one of the following is not an example redundancy? Correct Answer Data Center Data redundancy in database means that some data fields are repeated in the database. Four major data r redundancy are Hardware redundancy, software redundancy, Time redundancy, Information redundancy.

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K iteration by Newton-Raphson method of finding square root of a number increases accuracy in number of digits. Correct Answer 2K In numerical analysis, Newton’s method(also known as the Newton – Raphson Method, named after Isaac Newton and Joseph Raphson is a method for finding successively better approximations to the roots of a real - valued function.

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Which kind of software testing strategy stars with testing the fundamental components first? Correct Answer Bottom-up- testing In Bottom up testing, each component at lower hierarchy is tested individually and then the components that rely upon these components are tested. Test conditions and observation are easier to create.

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Which one loads first when you boot up your computer? Correct Answer BIOS The first thing a computer has to do when it is turned on is start up a special program called an operating system. The operating system’s job is to help other computer programs to work by handling the messy details of controlling the computer’s hardware.

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Compared to CISC, RISC processors (at the same clock) are Correct Answer faster RISC CPUs generally run at faster clock speeds than CISC because max clock period is dictated by the slowest step of the pipeline (more complex instructions are slower).

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The action of decoding a modulated signal is know as Correct Answer None of the above Video modulation is a strategy of transmitting video signal in the field of radio modulation and television technology.

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Which of the following is not a type Web search engine? Correct Answer Human -organized The basic types of search engines include: Web crawlers, Meta, directories and hybrids. Within these basic types, there are many different methods used to retrieve information. Some common search engines are: Google, Bing and Yahoo etc.

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You need to determine whether IP information has been assigned to your Windows NT. Which utility should you use? Correct Answer IPCONFIG The easiest way to do TCP/IP configuration is to open a Command Prompt window and enter the IPCONFIG/ALL command.

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How many pairs of stations can simulataneously communicate on Ethernet LAN? Correct Answer 1 Ethernet is the most widely installed local area network (LAN) technology. Ethernet is a link layer protocol in the TCP/IP stack.

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In SQL, the ____ command is used to recompile a view Correct Answer CRFATE VIEW In SQL, a view is a virtual table based on the result - set of an SQL statement. A view always shows up - to - date data! The database engine recreates the data, using the view’s SQL statement, every time a user queries a view.

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A path carrying signals between a source and a destination is known as Correct Answer Cannel Communicating data from one location to another requires some form of pathway or medium called communication channels, use two types or media: cable (twisted - pair wire, co - axial cable and fiber - optic cable) and broadcast (microwave, satellite, radio and infrared).

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Which of the following medium is used for broadband local networks? Correct Answer CATV Cable TV is also known as “CATV” (Community Antenna Television). The same cabling infrastructure that supports cable TV also supports cable Internet.

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A network that requires human invention of route signals is called A Correct Answer T-switched network A network switch is a multi - port network bridge that uses hardware addresses to process and forward data at the data link layer (layer 2) of the OSI model.

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Data directory contains details of- Correct Answer Data structure The MySQL data directory contains all of the databases and tables managed by the server Each database corresponds to a directory under the data directory. Tables within a database correspond to files in the database directory.

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Which of the following tags is used to create a paragraph in HTML? Correct Answer "content" Tag is a basic unit of an HTML document.

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A communication network which is used by large organizations over regional national or global area is called___ Correct Answer WAN A wide area network (WAN) is a telecommunications network or computer network that extends over a large geographical distance.

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Which one of these interfaces is implement by Tread class? Correct Answer Runnable Runnable is basically a type of class (Runnable is an interface) that can be put into a threat describing what the thread is supposed to do. The Runnable interface requires of the class to implement the method run().

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In Java, which operation is used to create an object? Correct Answer class In Java, A class can be defined as a template/blueprint that describes the behavior/state that the object of its type support.

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Worst -case of Quicksort algorithm occurs when Correct Answer Data are random Quicksort (sometimes called partition – exchange sort) is an efficient sorting algorithm, Quicksort is a comparison sort. In the worst case, it make O (n2) comparisons, though this behavior is rate.

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Which video File format is used for HDTV? Correct Answer AVI HDTV (High - Definition Television) is a form of DTV (Digital television) that provides the highest resolution and picture quality.

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What is not the advantage of IPV6 over IPV4 ? Correct Answer Classification of traffic Internet Protocol Version 6 (IPV6) is the most recent version of the Internet Protocol (IP), that provides an identification and location system for computers on networks and routes traffic across the Internet.

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Which of the flowing is not a standard synchronous communication protocol? Correct Answer PAS Synchronous Data Link Control (SDLC) is a computer communications protocol. The Serial Line Internet Protocol (also SLIP) is an encapsulation of the Internet Protocol. Simple Mail Transfer Protocol (SMTP) is an Internet standard for electronic mail (email) transmission.

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Bubble sort algorithm sorts n data items using Correct Answer O(n2) comparison Bubble sort is a simple sorting algorithm. This sorting algorithm is comparison based algorithm in which each pair of adjacent elements is compared and the elements are swapped if they are not in order. The average & average case complexity of bubble sort is O(n2).

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Which of the following terms refers to the degree to which data in a database system are accurate and correct/ Correct Answer Data integerity Data integrity is the maintenance of and the assurance of the accuracy and consistency of data over its entire life - cycle and is a critical aspect to the design, implementation and usage of any system which stores, processes of retrieves data.

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How can you avoid DQL Injection? Correct Answer using careful programming SQL injection refers to an injection attack wherein an attacker can execute malicious SQL statements that control a web applications database server – RDBMS. By using careful programming SQL injection can be avoid.

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A class that is inherited in Java is called a Correct Answer subclass A class that is inherited/derived from another class is called subclass(also a derived class extended class or child class). The class from which the subclass is derived is called superclass(also a base class or parent class).

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Using setter and getter method is known as Correct Answer encapsulation In computer science, a mutator method is a method used to control changes to a variable. They are also widely known as setter methods. Often a setter is accompanied by a getter (also known as accessor), which returns the value of private member variable.

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Which one is the most suitable for implementing a priority queue ? Correct Answer Dequeue (double ended queue) A priority queue is an abstract data type, which is like a regular queue or stack data structure. A priority queue must at least support the operations: insert_with_priority, pull highest_priority_element.

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Which of the standard protocol for network managment feature? Correct Answer SNMP Simple Network Management Protocol (SNMP) is a popular protocol for network management.

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Which is not a feature of object oreinted programming? Correct Answer recursion The important features of Object Oriented programming are: - Inheritance - Polymorphism - Data Hiding - Encapsulation - Overloading - Reusability

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In C++ the idea to doiding the details of how something is implemented id known as____ Correct Answer encasulation Data encapsulation is a mechanism of bundling the data and the functions that use them and data abstraction is a mechanism of exposing only the interfaces and hiding the implementation details from the user.

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How many '1' will be there in the binary representation of the following expression (assume 16 bit number ) 12+61+128+1024 Correct Answer 6 (1484)10 = (10111001100)2 So, there are 6 (six) ‘1’ of the following expression.

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The following are function of a DBMS except___ Correct Answer creating and processting Functions of Database Management System are: Data Dictionary Management, Data Storage Management, Data Transformation and Presentation, Security Management, Multi user Access Control, Backup and Recovery Management, Data Integrity Management, Database Access Languages and Application Programming Interfaces etc.

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Fiber optical cable is used for? Correct Answer None of the above Fiber - Optic Communication is a method of transmitting information from one place to another by sending pulses of light through an optical fiber.

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Which of the following will produce an answer that is close in value to a double ' d while not being greater than d? Correct Answer (int)math .floor( d) The casting to an int is a smokescreen. Option D is correct, it is syntathecially correct and will consistently return a value less than d.

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What is the value of 'd after this line of code has been executed? double d= Math. round (2.5 math. random() ); Correct Answer 3 Round different numbers to the nearest integer : Var a = Math.round(2.60); Ans : 3 Var b = Math.round(2.49); Ans : 2 Var c = Math.round( - 2.50); Ans : - 3

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Which of the following is the destructor for the class Vehicle" Correct Answer ~ Vehicle () A destructor class is a special member function of a class that is executed whenever an object of it’s class goes out of scope or whenever the delete expression is applied to a pointer to the object of that class.

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Which of the following is an example of a client server model? Correct Answer All of the above The client - server model is a distributed application structure that partitions tasks between the providers called servers and service requesters, called clients.

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থার্মিট ওয়েল্ডিং এ AI ও লৌহ অক্সাইডের অনুপাত - সঠিক উত্তর 3:1 থার্মিট ওয়েল্ডিং এ Al ও লৌহ অক্সাইড এর অনুপাত থাকে 3:1 থার্মিট ওয়েল্ডিং এ প্রয়োজনীয় তাপ পাওয়া যায় থামিট মিক্সার - এর তাপোৎপাদী বিক্রিয়া থেকে। যেমন - 3Fe_3 O_(4 ) + 8AI →gfe + 4 AI_2 O_3 + 3.01 MJ⁄mol এতে প্রায় 3000˚C তাপমাত্রা উৎপন্ন হয়।