Computers and Technology

Re-write the following arithmetic expressions as Scheme expressions and show the result of the Scheme interpreter when invoked on your expressions. (a) (22+42) (54 x 99).(b) ((22+42) x 54) x 99. (c) 64 x 102 + 16 x (44/22).
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WHAT ARE THEY USED FOR Developing tank 2. Contact print 3xer 4. Developer 5. Darkrooms 6. Acid stop bath 7. Enlarger 8. Johann Heinrich Schulze
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Data represent real-world things including raw facts such as audio and video data. Group of answer choices True False
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What are the advantages of businesses using Twitter ?
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"Which of the following is not an example of a project? Select one: a. Creating a website for a company b. Raising money for a disaster relief trip c. Starting-up a restaurant d. Emptying the recycling everyday"
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Remember for a moment a recent trip you have made to the grocery store to pick up a few items. What pieces of data did the Point of Sale (POS) terminal and cashier collect from you and what pieces of data about the transaction did the POS terminal pull from a database to complete the sale? In addition to the data collected and retrieved what information was generated by the POS terminal at the end of the order, as it is being completed?Identify the following parts of a common grocery store transaction as data, information, or knowledge.1. An item's UPC number 2. Change back to customer 3. General changes to demand in different seasons 4. Cost each Data 5. Quantity purchased 6. Non-taxable total 7. Extended cost (quantity times cost each) 8. Amount tendered 9. Sales of an item for the last week 10. Upcoming holidays and customer's special needs 11. How paid (cash, charge card, debit card) 12. Shopper loyalty card number 13. Taxable total
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A small company has developed a specialized software product that it configures specially for each customer. New customers usually have specific requirements to be incorporated into their system, and they pay for these to be developed and integrated with the product. The software company has an opportunity to bid for a new contract, which would more than double its customer base. The new customer wishes to have some involvement in the configuration of the system. Explain why, in these circumstances, it might be a good idea for the company owning the software to make it open source.
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Write a function called cipher(phrase,shift)that accepts two parameters: a string phrase and an integer shift.The integer shift can be positive, negative or zero.
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Write pseudocode instructions to carry out each of the following computational operations:1. Determine the area of a triangle given values for the base b and the height h.2. Compute the interest earned in 1 year given the starting account balance B and the annual interest rate I and assuming simple interest, that is, no compounding. Also determine the final balance at the end of the year.3. Determine the flying time between two cities given the mileage M between them and the average speed of the airplane.
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Declare a char array named line of size 50, and write a statement that reads in the next line of console input into this array. (Assume the line may contain whitespace characters and the total number of the characters in the line is less than 50)
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Readers who can easily locate and understand important information in a document will be more likely to agree with its arguments. True False
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Compose one paragraph (three to four sentences) explaining the difference between a courtesy copy and a blind courtesy copy.
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In C#Write the program SubscriptExceptionTest in which you use an array of 10 doubles. Write a try block in which you place a loop that prompts the user for a subscript value and displays the value stored in the corresponding array position or asks the user to quit the program by entering 99. Create a catch block that catches any IndexOutOfRangeException and displays the message: Index was outside the bounds of the array.
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____ was the first-generation cellular telephone system. a. Advanced Mobile Phone Service (AMPS) b. Global System for Mobile (GSM) Communications c. Time Division Multiple Access (TDMA) d. Personal Communications Services (PCS)
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An enterprise DBMS is automatically capable of serving as a mobile DBMS. There are no special issues raised by mobility. True False
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5)What are the differences in the function calls between the four member functions of the Shape class below?void Shape::member(Shape s1, Shape s2);void Shape::member(Shape *s1, Shape *s2);void Shape::member(Shape& s1, Shape& s2) const;void Shape::member(const Shape& s1, const Shape& s2);void Shape::member(const Shape& s1, const Shape& s2) const;
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Explain why deploying software as a service can reduce the IT support costs for a company. What additional costs might arise if this deployment model is used?
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What policy definition defines the standards, procedures, and guidelines for how employees are to be granted and authorized access to internal IT resources through the public Internet?
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Write a Python function uniquely_sorted() that takes a list as a parameter, and returns the unique values in sorted order.
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Several company users are frequently forgetting passwords for their mobile devices and applications. Which of the following should the systems administrator do to reduce the number of help desk tickets submitted?A. Implement single sign-on.B. Enable multifactor authentication.C. Configure biometric authentication.D. Remove complex password requirements.
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Jasmine needs to select the first sentence of a paragraph and the last sentence of a paragraph simultaneously. The text is nonadjacent. Which of the following should she do?a. Select the first sentence, then press and hold ALT while selecting the second sentence.b. Select the first sentence, then press and hold SHIFT while selecting the second sentence.c. Select the first sentence, then press and hold SHIFT+ALT while selecting the second sentence.d. Select the first sentence, then press and hold CTRL while selecting the second sentence.
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Why are user application configuration files saved in the users home directory and not under /etc with all the other system-wide configuration files? ____________________________________________________________________________________
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Load the titanic sample dataset from the Seaborn library into Python using a Pandas dataframe, and visualize the dataset. Create a distribution plot (histogram) of survival conditional on age and gender
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As you are talking to your colleague over the phone, the sound of an airplane flying low drowns out part of your conversation. Immediately after, your cell phone rings, again disturbing the flow of conversation. Both of these are instances of:
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