Master Computers and Technology with Fun Quizzes & Brain Teasers!

by the end of the first decade of the 21st century johnson & johnson faced numerous lawsuits over an apparently innovative ____ replacement technology
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Identify all the keys (including nested dictionaries) in 1. students - ("Semester_1" : {"Aston":20,"Julia":25), "Semester_2" : {"Ben":21, "Lisa": 26}} 2. a. Semester 1. Semester 2. Aston, julia. Ben and Usa b. 20, 25, 21, and 26 c. Semester 1 and Semester 2 d. Aston Julia Ben, and Lisa 2 QUESTION 11 which statement changes the value associated with key "Lemon' to 0.75 in the dictionary fruits dict? a. fruits dictLemon -0.75 b. fruits dict(0.75) - "Lemon"c. dict'lemon') - fruits dito.753 d. fruits_dict["Lemon"] - 0.75 HETI
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You are given a file called class_scores.txt, where each line of the file contains a one word username and a test score separated by spaces, like below:. Write code that scans through the file, adds 5 points to each test score, and outputs the usernames and new test scores to a new file, scores2.txt.
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FILL IN THE BLANK. pi = 3.14159formatted = _______.format(pi)print("Pi day sale! All pies", formatted, "off.")Fill in the blank so that the following program prints:Pi day sale! All pies $3.14 off.
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when a report which has an attachment control is viewed in print preview, which attachment displays?
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why do maxima (bright spots) and minima (dark spots) appear when light is reflected back from the cd?
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when information is sent and received almost simultaneously, the communication is in asynchronous (real-time) mode.
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two users need to send each other emails over unsecured channels. the system should support the principle of nonrepudiation. which of the following should be used to sign the users certificates?
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the built-in object class . group of answer choices is the base class for most, but not all, classes defines tostring() and no additional methods is derived from class super defines multiple methods including tostring() and equals()
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integer inputsize is read from input. then, integers and strings are read and stored into integer vector quantitylist and string vector grocerylist, respectively. lastly, integer quantityasked is read from input. find quantityasked in quantitylist and output the following: the quantity the value of quantityasked has value the element in grocerylist at the index of quantityasked in quantitylist at index the index of quantityasked in quantitylist end with a newline. ex: if the input is: 4 62 garlic 10 celery 16 squash 68 sausage 68 then the output is: the quantity 68 has value sausage at index 3 note: quantityasked is an element in quantitylist.
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the computational thinking tool of abstraction strives to eliminate all minor and insignificant details in order to focus on the fundamental aspects of the problem. T/F?
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the part of a program in which a given variable can be referenced is that variables:
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Let's say that the prior for the positive class takes the following value: P(y=+) = 0.3 Also, say that P(D|+) = .3 and P (D|-) = .6 From the above values of prior and likelihood, calculate the value of P(D), the probability of generating document D. Enter the value below: ___________ From P(D) also estimate the posterior probability P(y= +|D). Enter your answer as a numerical expression or round it off to two decimal places.
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write a nondeterministic solution of k-clique
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Write an R script that uses a range definition to create a vector of all numbers 1 - 100. Then have your R print the sum of this vector.
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which technology can currently transfer data at up to 10 gbps?a. cat5b. wific. lted. ethernet
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the meaning of perfect reproduction when referring to digital information
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decision modeling is a. a logical approach to decision making. b. a rational approach to decision making. c. a scientific approach to decision making. d. all of the above.
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True/False: upcasting conversion is performed automatically by the compiler without any special operations (function calls).
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the three most important symmetric block ciphers are: _____, 3des, and aes.
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which of the following interfaces is a standard database access method, developed by sql access group, that allows an application to access data stored in a database management system (dbms)?
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Assume that class Vehicle contains the following method.public void setPrice(double price){ /* implementation not shown */ }Also assume that class Car extends Vehicle and contains the following method.public void setPrice(double price){ /* implementation not shown */ }Assume Vehicle v is initialized as follows.Vehicle v = new Car();v.setPrice(1000.0);Which of the following is true?A. The code above will cause a compile-time error, because a subclass cannot have a method with the same name and the same signature as its superclass.B. The code above will cause a run-time error, because a subclass cannot have a method with the same name and the same signature as its superclass.C. The code above will cause a compile-time error because of type mismatch.D. The code v.setPrice(1000.0); will cause the setPrice method of the Car class to be called.E. The code v.setPrice(1000.0); will cause the setPrice method of the Vehicle class to be called.
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if you were to construct a truth table for selector, how many rows would it have? how many (input and output) columns? (5 points)
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which type of ""cookies"" enables a user to stay logged to a site and keeps your shopping cart intact as you click from page to page? essential non-essential location widget none of the above
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