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If x is an integer and y=-2x-8, what is the least value of x which y is less than 9? Correct Answer -8 Area of outer square = 2a x 2a = 4a2 In△BAD (BD)2 = (AD)2 + (AB)2 (2a)2 = x2 + x2 4a2 = 2x2 2a2 = x2 x = 2 – √a. Area of inner square = 2 – √ax2 – √a = 2a2 Difference between the areas of the outer and inner square = 4a2−2a2 = 2a2

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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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A collection of unprocessed items is____ Correct Answer data Information is a collection of organised data but Data is a collection of unprocessed Items.

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If you wish to extend the length of the network without having the signal degrade, you would use a____ Correct Answer Repeater ১. একই নেটওয়ার্ক - এ একাধিক ডিভাইসের মধ্যে সংযোগ স্থাপন করে সুইচ। ২. দুইটি আলাদা নেটওয়ার্কের মধ্যে মধ্যে সংযোগ স্থাপন করে রাউটার। ৩. একটি নেটওয়ার্ক থেকে সম্পূর্ণভাবে বের হয়ে যাওয়ার জন্য অথবা একটি নেটওয়ার্কে'র একেবারে প্রথম পর্যায়ে ঢোকার জন্য যে ডিভাইস ব্যবহার করা হয় তাকে বলে গেটওয়ে।

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Which disk is used to cold boot a PC? Correct Answer System disk It is the system disk because the other disks may boot a PC, but they also perform added functions beyond booting the PC.

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Ctrl, Shift and Alt are called _____keys. Correct Answer modifier ১. কীবোর্ডে F1 থেকে F12 কী গুলোকে Function Key বলে। ২. ১, ২, ৩, ৪ ইত্যাদি সংখ্যাগুলোকে Numeric Key বলে। ৩. Ctrl, Shift, Alt ইত্যাদি কীগুলোকে Modifier key বলে।

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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.