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Bit coin uses __ technology. Correct Answer P2p Bitcoin uses public - key cryptography, in which two cryptographic keys, one public and one private, are generated.

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According to International Diabetes Federation . which day is observed as 'World Diabetes Day's ? Correct Answer 14th November World Diabetes Day is celebrated on 14 November every year to make people aware of the treatment, prevention, and symptoms. This day also emphasises to maintain a healthy lifestyle and provide education regarding diabetes.

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The parliament of __ is well known as Westminster Parliament. Correct Answer UK The Palace is one of the centres of political life in the United Kingdom; "Westminster" has become a metonym for the UK Parliament and the British Government, and the Westminster system of government commemorates the name of the palace. Location: Westminster; London; SW1A 0AA; U... Country: United Kingdom Owner: Queen Elizabeth II in right of the Crown

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The Hall of Fame Championships is popular in __ Sport . Correct Answer Tennis The Hall of Fame Open is an international tennis tournament that has been held every year in July since 1976 at the International Tennis Hall of Fame in Newport, Rhode Island, the original location of the U.S. National Championships.

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which of the following is full form of BIDA? Correct Answer Bangladesh Investment Development Authority Bangladesh Investment Development Authority (Bengali: বাংলাদেশ বিনিয়োগ উন্নয়ন কর্তৃপক্ষ; BIDA)is Bangladesh government agency responsible for encouraging and facilitating private investment in Bangladesh.

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If Tk. 5,000 is invested at 12% annual rate of interest, how much will the investment be worth after 2 years? Correct Answer 6272 যৌগিক মুনাফার ক্ষেত্রে , ১ম বছরের ক্ষেত্রে , I1 = p1nr = ( 5000 × 1 × 12/100) টাকা = 600 টাকা ২য় বছরের ক্ষেত্রে, I2 = p2nr = ( 5600 × 1 × 12/100) টাকা = 672 টাকা মোট টাকার পরিমান = ( 5000 + 600 + 672) = 6272 টাকা।

Explanation:

Find the simplified value of : ( 6 + 2x ) (4-2x). Correct Answer 24 -4x - 4x2 ( 6 + 2x) ( 4 - 2x) = 24 - 12x + 8x - 4x2 = 24 - 4x - 4x2

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If 62 =34 + 4x. what is x ? Correct Answer x =7 62 = 34 + 4x 4x = 62 - 34 x = 28/4 x = 7

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If an investor gets Tk. 19500 as interest after 5 years on his savings of Tk. 13,000. what is the rate of interest ? Correct Answer 30% I = pnr 19500 = 13000 × 5 × r /100 r = 19500/650 r = 30%

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A person saves Tk. 5000 in his bank account . If the bank gives 10% annual profit , how much will be his balance after 6 years? Correct Answer Tk. 8000 সরল মুনাফার ক্ষেত্রে, I = pnr = ( 5000 × 6 × 10/100) = 3000 টাকা মোট টাকা = ( 5000 + 3000) টাকা = 8000 টাকা

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16 +16=? Correct Answer 42 √ 16 + 16 = √ 32 = √ 16 × 2 = 4 √2

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what is the ratio of 3/4 to the product 4 (3/4)? Correct Answer 1/4 3/4 : 4( 3/4) = 3/4 : 3 = 3 : 12 = 3 /12 = 1/4

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which operator is used to declare the destructor in C++ ? Correct Answer ~ A destructor is a member function that is invoked automatically when the object goes out of scope or is explicitly destroyed by a call to delete. A destructor has the same name as the class, preceded by a tilde (~). For example, the destructor for class String is declared: ~String().

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which alternative can replace the throw statement in C++ ? Correct Answer return Throw and return does the same job as return a value . so it can be replaced .

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what type of reference should be used in vector arithmetic in C++ =? Correct Answer both dynamic & const As we are using the vector and it will give accurate result if we use const reference .

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which of these data types is used by operating system to manage the Recursion in Java? Correct Answer Stack In computer science, a Stack is an abstract data type that serves as a collection of elements, with two main principal operations: Push, which adds an element to the collection, and Pop, which removes the most recently added element that was not yet removed.

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Find the value of 95×9-3×94 Correct Answer 96 95 × 9 - 3 × 94 = 95 - 3 + 4 = 96

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which of the following is an incorrect statement about packages? Correct Answer A package can be renamed without renaming the directory in which the classes are stored. A package can be renamed only after renaming the directory in which the classes are stored.

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If 18 is 15 percent of 30 percent of a certain number , what is the number? Correct Answer 400 ধরি, সংখ্যাটি x x × 15/100 ×30/100 = 18 x = 18 × 1000/45 x = 400

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A derived class inherits attributes from a __ . Correct Answer Super class A class can inherit attributes and behaviour methods from another class, called the supper class. A class which inherits from a super is class is called a sub class, also called heir class or child class.

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If a cube has a length of 8 cm , what is its total surface area? Correct Answer 384 ঘনকের পৃষ্টতলের ক্ষেত্রফল = 6a2 বর্গ একক = 6 × ( 8) 2 বর্গ সে.মি = 384 বর্গ সেমি।

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Multiple inheritance in Java can be implemented using which of the following ? Correct Answer Inter faces Multiple inheritances in Java programmimg is achieved os implemented using interfacees. Java doesn't support multiple inheritance using classes. " A class can extend only one class but it can implement multiple interfaces.

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which component is used to compile , debug and execute java program? Correct Answer JDK JDK is a core component of java Environment and provides all the tools, executables and binaries required to compile, debug and execute a java Program .

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If determinant of a matrix A is Zero than : Correct Answer A is a Singular matrix যদি কোনো বর্গ ম্যাট্রিক্স - এর determinate এর মান শূন্য হয় তাহলে ম্যাট্রিক্সটি অবশ্যই Singular matrix হবে।

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The complexity of Binary search algorithm is ___ Correct Answer O (log n) Binary search runs in at worst logarithmic time, making O ( log n) comparison , where n is the number of elements in the array, the O is Big O notation, and log is the logarithm .

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Object being passed to a copy constructor __ Correct Answer Must be passed by value A copy constructor is called when an object is passed by value. Copy constructor itself is a function. So if we pass an argument by value in a copy constructor, a call to copy constructor would be made to call copy constructor which becomes a non - terminating chain of calls.

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A nonstandard HTML extension that causes scrolling text to appear as part of a Web page is : Correct Answer marquce The < marquee> is a non - standard HTML tag which was used to creat a scrolling text or an image .It was used to make the text /image scroll horizontally accross or vertically down the web page.

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why do we need to handle exceptions? Correct Answer To avoid syntax errors The exceptions should be handled to prevent any abnormal termination of a program. The program should keep running even if it gets interrupted in between.

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If same message is passed to objects of several different classes and all of those can respond in a different way, what is this feature called? Correct Answer Polymorphism The feature defined in question defines polymorphism features. Here the different objects are capable of responding to the same message in different ways, hence polymorphism.

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How to access the overridden method of base class from the derived class? Correct Answer using scope resolution operator Scope resolution operator :: can be used to access the base class method even if overridden. To access those, first base class name should be written followed by the scope resolution operator and then the method name.

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11100010 has a decimal value of __ Correct Answer 226 (11100010)2 = 1×27 + 1×26 + 1×25 + 0×24 + 0×23 + 0×22 + 1×21 + 0×20 = 128 + 64 + 32 + 0 + 0 + 0 + 2 + 0 = (226)10

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when two variables are logically compared , the logic gate that tests the equivalence is ___ Correct Answer XOR This explains why "EQ" is often called "XNOR" in the combinational logic of circuit engineers, since it is the negation of the XOR operation; "NXOR" is a less commonly used alternative. Another rationalization of the admittedly circuitous name "XNOR" is that one begins with the "both false" operator NOR and then adds the eXception "or both true".

Explanation:

Source code is (n) Correct Answer Program In computing, source code is any collection of code, with or without comments, written using a human - readable programming language, usually as plain text. The source code of a program is specially designed to facilitate the work of computer programmers, who specify the actions to be performed by a computer mostly by writing source code. The source code is often transformed by an assembler or compiler into binary machine code that can be executed by the computer. The machine code might then be stored for execution at a later time. Alternatively, source code may be interpreted and thus immediately executed.

Explanation:

Does constructor overloading include different return types for constructors to be overloaded ? Correct Answer No, constructors doesn't have any return type The constructors doesn't have any return type. When we can't have return type of a constructor, overloading based on the return type is not possible.

Explanation:

Dark data represents __ Correct Answer Unused data Dark data is data which is acquired through various computer network operations but not used in any manner to derive insights or for decision making. The ability of an organisation to collect data can exceed the throughput at which it can analyse the data. In some cases the organisation may not even be aware that the data is being collected. IBM estimate that roughly 90 percent of data generated by sensors and analog - to - digital conversions never get used.

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which of the following defines the addressing capabilities of the networking Correct Answer NAT NAT = Network address translation TCP = Transmission Control Protocol UDP = User Datagram Protocol

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Memory management scheme by which a computer stores and retrieves data from secondary storage for use in main memory is __ Correct Answer paging memory paging In computer operating systems, memory paging is a memory management scheme by which a computer stores and retrieves data from secondary storage for use in main memory. In this scheme, the operating system retrieves data from secondary storage in same - size blocks called pages.

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which of the following is not a malware? Correct Answer Bug Human ware is something which is worn by the human beings which is not a malware. where as virus, worm and adware are something related to computers they all are a part of class software called "malware".

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A single communication system that transfers and connects the data between major components inside a computer is : Correct Answer System Bus In computer architecture, a bus (a contraction of the Latin omnibus, and historically also called data highway) is a communication system that transfers data between components inside a computer, or between computers. This expression covers all related hardware components (wire, optical fiber, etc.)

Explanation:

A Primary key must also be __ Correct Answer Unique A primary key is a field in a table which uniquely identifies each row/record in a database table. Primary keys must contain unique values. A primary key column cannot have NULL values. A table can have only one primary key, which may consist of single or multiple fields.

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USB stands for __ Correct Answer Universal Serial Bus Universal Serial Bus (USB) is an industry standard that establishes specifications for cables and connectors and protocols for connection, communication and power supply (interfacing) between computers, peripherals and other computers.

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which of the following is the smallest size in the list? Correct Answer Gigabyte Gigabyte Technology is a Taiwanese manufacturer and distributor of computer hardware. Gigabyte's principal business is motherboards. It shipped 4.8 million motherboards in the first quarter of 2015, which allowed it to become the leading motherboard vendor.

Explanation:

Int C = 10 , system out println (C-) , gives a output of Correct Answer 10 এখানে C একটি ভেরিএবল যার ডেটাটাইপ হলো int বা পূর্ণসংখ্যা এবং এর value হলো 10 এখন প্রিন্ট কমান্ডে printf(c - - ) বয়বহৃত হয়েছে এর মানে আমরা output এ 10 ই দেখব।। c - - এর অর্থ প্রথমে c এর মান 10 Print করবে পরে 1 বিয়োগ করবে। আর - - c এর মানে প্রথমে - 1 তারপর C এর value অর্থাৎ যদি - - C থাকত তাহলে  9 print হত।

Explanation:

How many layers are there in the software part of networking framework Correct Answer seven 7 Layers OSI Model: The 7 Layers of Network Architecture. The Open Systems Interconnection (OSI) Reference Model is a conceptual framework that describes functions of the networking or telecommunication system independently from the underlying technology infrastructure.

Explanation:

what represents a row in a relational database? Correct Answer tuple In the context of a relational database, a row—also called a tuple—represents a single, implicitly structured data item in a table. In simple terms, a database table can be thought of as consisting of rows and columns.