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Google is one of the most popular search engines, it is _____ by the internet users. Correct Answer utilized After 'be verb', past participle of verb is used in the passive voice.

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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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which of the following combinations is definitely correct ? Correct Answer C and Bangla Let us solve the question by the tabular method:A is in 5th standard and likes Maths. So tick the blanks 5th standard and Maths for A and cross the rest of the Maths column. A studies with only one person who likes Bangla. I studies with two other friends who like languages.D studies in 6th standard with only one person and does not like civics. So tick the 6th standard blank corresponding to D and cross the civics blank for D. E studies with only one friend and doesn't like languages. The one who likes history doesn't study in 5th or 6th standard. D , E study with only one person. D is in 6th standard and E doesn't like languages. The remaining are B , C , G and I. I studies with two more persons who like languages. C doesn't like English and Science. So C cannot be I's classmate and can only be A's classmate because E doesn't like languages, C should like Bangla . Hence tick 5th standard and Bangla for C, cross the rest of the Bangla column. Similarly E is D's classmate because E studies with only one person and doesn't like Bangla. So tick 6th standard for E. Finally B and G are I's classmates, hence tick the 7th standard for B,G and I. Now that the standards are set, let's move to the subjects. Since B and G like only the languages and Bangla is already choosen by C, they are left with only two blanks each which are English and Science. So cross the rest of the row for B and G. The one who likes history is not in 5th and 6th. In seventh standard B and G like only languages, hence I likes history. Mark history blank of I and cross the rest of the column. Now civics column should be left with one blank , which corresponds to E. Tick the blank corresponding to civics for E and cross the rest of the row . Finally a blank in Economics column corresponding to D is left. Mark it and cross the blanks for other subjects of D's row. The table should look like below after following the above steps.Now referring to the above table we can say that (option) C & Bangla is correct answer for the above question.

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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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who amongst the following combinations is definitely correct ? Correct Answer G Let us solve the question by the tabular method:A is in 5th standard and likes Maths. So tick the blanks 5th standard and Maths for A and cross the rest of the Maths column. A studies with only one person who likes Bangla. I studies with two other friends who like languages.D studies in 6th standard with only one person and does not like civics. So tick the 6th standard blank corresponding to D and cross the civics blank for D. E studies with only one friend and doesn't like languages. The one who likes history doesn't study in 5th or 6th standard. D , E study with only one person. D is in 6th standard and E doesn't like languages. The remaining are B , C , G and I. I studies with two more persons who like languages. C doesn't like English and Science. So C cannot be I's classmate and can only be A's classmate because E doesn't like languages, C should like Bangla . Hence tick 5th standard and Bangla for C, cross the rest of the Bangla column. Similarly E is D's classmate because E studies with only one person and doesn't like Bangla. So tick 6th standard for E. Finally B and G are I's classmates, hence tick the 7th standard for B,G and I. Now that the standards are set, let's move to the subjects. Since B and G like only the languages and Bangla is already choosen by C, they are left with only two blanks each which are English and Science. So cross the rest of the row for B and G. The one who likes history is not in 5th and 6th. In seventh standard B and G like only languages, hence I likes history. Mark history blank of I and cross the rest of the column. Now civics column should be left with one blank , which corresponds to E. Tick the blank corresponding to civics for E and cross the rest of the row . Finally a blank in Economics column corresponding to D is left. Mark it and cross the blanks for other subjects of D's row. The table should look like below after following the above steps.Now referring to the above table we can say that (optio G is correct answer for the above question.

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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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Alam sold two vehicles for Tk. 46000 each . If he gained 10% on the first and lost 10% on another , then what is his percentage profit or loss in this transaction? Correct Answer 1% loss Let the profit be X% & loss be Y%. So, net profit/loss % = X + ( - Y) + X.( - Y)/100 (Negative sign denotes that there is a loss.) = 10 + ( - 10) + 10.( - 10)/100 = - 1 (Negative sign denotes that there is a net loss.) So, the net loss percentage is 1%.

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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".

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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.

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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.

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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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A man can row 6 km / hr in still water. It the speed of the current is 2 km / hr , it takes 3 hrs more in upstream than in the downstream for the same distance . The distance is Correct Answer 24 km Speed of man in still water, x = 6 km/h Speed of current, y = 2 km/h Let distance = M According to question, Upstream time = Downstream time + 3 Or, M/4 = M/8 + 3 Or, 2M - M = 24 Or, M = 24 So, the distance is 24 km.

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The respective ratio between the speed of a car , a train , and a bus is 5 : 9 : 4 . The average speed of the car, bus and train is 72 km / hr together . what is the average speed of the car and the train together? Correct Answer 84 km / hr Let the speeds of the car, train and bus be 5x, 9x and 4x km/hr respectively. Average speed = (5x + 9x + 4x)/3 = 18x /3 = 6x km/hr. Also, 6x = 72 = > x = 12 km/hr Therefore, the average speed of the car and train together is = ( 5x + 9x)/2 = 7x = 7 x 12 = 84 km/hr.

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Three angles of a triangle are in proportion 5: 6: 7. Then what is the difference in degrees between he biggest and the smallest angles? Correct Answer 20° ATQ, 5x + 6x + 7x = 180 Or, 18x = 180 Or, x = 10 So, the difference in degrees between the biggest and the smallest angles = 70 - 50 = 20 degree.

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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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A water tank has two taps ( Tap-1 and Tap-2) : Tap-1 can fill a tank in 8 hours and Tap-2 can empty the tank in 16 hours . How long will they take to fill the tank if both taps are opened simultaneously but Tap -2 is closed after 8 hours? Correct Answer 12 In 1 hr, the tank is filled = 1/8 - 1/16 = 1/16 In 8 hrs " " " " = 8/16 = 1/2 Now, 1/8 part is filled by tap - 1 in 1 hour 1/2 part is filled by tap - 1 in = 8/2 = 4 hrs So, the required time = 8 + 4 = 12 hrs

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a motor -cycle covers 40 Km with a speed of 20 km /hr. Find the speed of the motor -cycle for the next 40 km journey so that the average speed of the whole journey will be 30 km / hr. Correct Answer 60.0km/hr Let the desired speed be x km/hr ATQ, 40/20 + 40/x = 80/30 Or, 1/20 + 1/x = 2/30 Or, 1/x = 1/15 - 1/20 Or, 1/x = (4 - 3)/60 Or, x = 60 So, the desired speed is 60 km/hr

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It is necessary to ____ standards are maintained . Correct Answer ensure Infinitive = To + V1 (Base form of the verb)

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12 marbles are selected at random form a large collection of white , red, green and yellow marbles . The number of marbles of each color is unlimited. Find the probability that the selection contains at least one marble of each color ? Correct Answer 3391 12 marbles are selected at random form a large collection of white , red, green and yellow marbles . The number of marbles of each color is unlimited. Find the probability that the selection contains at least one marble of each color ? This is same as W + R + G + Y = 12, where all are positive integers. Step I.. first, give one to each, hence 4 gone. Now you can distribute the remaining 8 to anyone as the restriction of at least one is done.. W + R + G + Y = 8..W + R + G + Y = 8.. Now, take this as 8 marbles and 3 partitions, so total 11 things. You can choose these 3 partitions in 11C3 ways = 11!/8!3! = 11∗10∗9/3∗2 = 11∗5∗3 Step II.. Total ways.. W + R + G + Y = 12 Now, take this as 12 marbles and 3 partitions, so total 15 things. You can choose these 3 partitions in 15C3 ways = 15!/12!3! = 15∗14∗13/3∗2 = 5∗7∗13 Probability = 11∗5∗3/5∗7∗13 = 33/91

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He is very ___ : he believes anything. Correct Answer gullible gullible (adjective): easily persuaded to believe something; credulous. "an attempt to persuade a gullible public to spend their money" Similar: credulous over - trusting over - trustful trustful easily deceived/led

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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.)

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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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A can finish a work in 5 days and B takes 4 days to do the same work . If the work is increased by 8 times, how many days will it take for both of them to finish the work if they work together? Correct Answer 20 days The work is increased by 8 times so the total work to be completed is [1 + 8 = 9] A completes 1/5 work in a day [ because he completes the work in 5 days] B completes 1/4 work in a day[ because he completes work in 4 days] So working together A&B completes 1/5 + 1/4 = 9/20 work in one day therefore the total increased work 9 will be completed in 20 days.

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I hope that the rain will __ for our picnic tomorrow. Correct Answer keep off Keep off - (of bad weather) fail to occur. "the rain kept off until we boarded our coach" Similar: stay away hold off not start not begin not come not happen

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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.

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The kids had prepared for the quiz and they "bore with" many prizes in the finale. Correct Answer bear away bear with phrasal verb of bear: be patient or tolerant with. "bear with me a moment while I make a phone call" Similar: be patient with show forbearance towards make allowances for tolerate Definition of bear away. transitive verb. : to carry off or attain to in victory

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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।

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I have told him that " there is many " solutions to the problem and he need not worry so much . Correct Answer there are many As 'many solutions' is plural; after there, the plural verb 'are' will be used.

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You should not " boasting of " your achievements. Correct Answer boast of boast of (someone or something) To speak proudly of someone or something, perhaps to an excessive or unwarranted degree. You're my daughter, and you are at the top of the class—of course, I'm going to boast of you!

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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.

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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.

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The average of the three numbers x , y and z is 45 , x is greater than the average of y and z by 9. The average of y and z is greater than y by 2 .Then the difference of x and z is: Correct Answer 7 According to the question, ⇒(x + y + z)/3 = 45 ⇒x + y + z = 135.....(i) ⇒x = (y + z)/2 + 9 ⇒2x−y−z = 18.....(ii) x + y + z = 135 2x−y−z = 18 −−−−−−−−−−−− 3x = 153 x = 51 From (i) y + z = 135 - 51 = 84.....(iii) Also, ⇒(y + z)/2 = y + 2 ⇒y + z = 2y + 4 ⇒z−y = 4 + y + z = 84 −y + z = 4 −−−−−−−−− 2z = 88 z = 44 Required difference = 51 - 44 = 7

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AR refers to which of the following environment Correct Answer Augmented Reality Augmented reality (AR) is an interactive experience of a real - world environment where the objects that reside in the real world are enhanced by computer - generated perceptual information, sometimes across multiple sensory modalities, including visual, auditory, haptic, somatosensory and olfactory.

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We are 'ANXIOUS' to avoid any problems with regard to this . Correct Answer Cool All options are synonyms of anxious except cool. Cool is opposite to anxious.

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He is extremely 'INTELLIGENT' but proud. Correct Answer dull All options are synonyms of intelligent except dull. Dull is opposite to intelligent.

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The full form of 'Wi-fi' is : Correct Answer Wireless Fidelity IEEE is a separate, but related, organization and their website has stated "WiFi is a short name for Wireless Fidelity". . To connect to a Wi - Fi LAN, a computer must be equipped with a wireless network interface controller.