FREE Trial S
study help categories /Computer science

Top Selling Computer science Questions

Create an abstract NewspaperSubscription class with fields for the subscriber name, address, and rate. Include get and set methods for the name field and get methods for the address and subscription... Write an application named UseInsurance that uses an abstract Insurance class and Health and Life subclasses to display different types of insurance policies and the cost per month. The Insurance... Open the Colors Solution.sln file contained in the VB2017\Chap01\Colors Solution folder. If necessary, open the designer window. The interface contains one label control and two buttons. You can use... In this exercise, you will complete the Sales application that you created in Exercise 8 in Chapter 2. a. Use Windows to copy the Sales Solution folder from the VB2017\Chap02 folder to the... In this exercise, you modify the Monthly Payment application from this chapters Apply lesson. Use Windows to make a copy of the Payment Solution folder. Rename the copy Payment Solution-DoLoop. Open... Open the FixIt Solution.sln file contained in the VB2017\Chap05\FixIt Solution folder. Open the Code Editor window and review the existing code. Start and then test the application. Correct any... Given a memory with a 24-bit address and 8-bit word size, (a) How many bytes can be stored in this memory? (b) If this memory were constructed from 1K 1-bit RAM chips, how many memory chips would be... Given the input wave forms shown in Figure 3.63, sketch the output, Q, of a D latch. CLK Figure 3.63 Input waveforms of D latch or flip-flop for Exercises 3.3 and 3.5 1. Jesse wants me to investigate GanttProject software to determine whether it would be suitable for SCR. She asked me to prepare a summary of pros and cons, and a sample of screen shots and... Write a program that reads an integer between 0 and 1000 and adds all the digits in the integer. For example, if an integer is 932, the sum of all its digits is 14. Use the % operator to extract... Describe an algorithm, relying only on the BinaryTree operations, that counts the number of leaves in a binary tree that are the left child of their respective parent. Assume you have created a mechanical robot that can perform the following tasks: Stand up. Sit down. Turn left 90 degrees. Turn right 90 degrees. Take a step. Additionally, the robot can determine... If p is true and q is false, then ______________. a. p OR q is true b. p OR q is false c. p AND q is true d. p is greater than q The Drive-Rite Insurance Company provides automobile insurance policies for drivers. Design a flowchart or pseudocode for following: a. A program that accepts insurance policy data, including a... A report that lists only totals, with no details about individual records, is a(n) _______________ report. a. Accumulator b. Final c. Group d. Summary Design the logic for a program that allows a user to enter any quantity of numbers until a negative number is entered. Then display the highest number and the lowest number. Geraldines Landscaping Service and Gerards Lawn Maintenance are merging their businesses and want to merge their customer files. Each file contains a customer number, last name, address, and property... Although the terms parameter and argument are closely related, the difference is that argument refers to _____. a. A value in a method call b. A passed constant c. A formal parameter d. A variable... Complete the following tasks: a. Design a class named Book that holds a stock number, author, title, price, and number of pages. Include methods to set and get the values for each data field. Also... Complete the following tasks: a. Design a class named Player that holds a player number and name for a sports team participant. Include methods to set the values for each data field and output the... Complete the C++ instructions column in Figure 3-25. The numbers of latex and Mylar balloons purchased will be integers. All of the remaining items will be real numbers. Use the int and double data... In this exercise, you create a program for the sales manager at Computer Haven, a small business that offers motivational seminars to local companies. Figure 7-53 shows the charge for attending a... Create a program that allows the user to enter an unknown number of sales amounts for each of three car dealerships: Dealership 1, Dealership 2, and Dealership 3. The program should calculate the... Consider the following attribute grammar for variable declarations, based on the CFG: Show a parse tree for the string A, B : C;. Then, using arrows and textual description, specify the attribute... Determine the order of each of the following growth functions. a. 10n 2 + 100n + 1000 b. 10n 3 7 c. 2 n + 100n 3 d. n 2 log n (a) Occasionally one encounters the suggestion that a garbage-collected language should provide a delete operation as an optimization: by explicitly delete-ing objects that will never be used again,... Write code to insert two additional elements, " dark " and " and ", at the proper places in the list to produce the following ArrayList as the result: ["It", "was", "a", "dark", "and", "stormy",... Repeat Exercise 5 in Chapter 7, but use an instance of ArrayList instead of an array. Exercise 5 in Chapter 7 Write a program in a class CharacterFrequency that counts the number of times a digit... Define the following terms: data model, database schema, database state, internal schema, conceptual schema, external schema, data independence, DDL, DML, SDL, VDL, query language, host language,... Consider the BANK ER schema in Figure 3.21, and suppose that it is necessary to keep track of different types of ACCOUNTS (SAVINGS_ACCTS, CHECKING_ACCTS, ) and LOANS (CAR_LOANS, HOME_LOANS, ).... Design a collection of database tables for the Springfield Town Council. The council is made up of representatives from each of the towns 15 precincts. The data you need to store includes the... Where are the current career opportunities for the IT auditor? Search the Internet and identify at least one job profile/description for each career opportunity identified above. For each job profile... True or False? There usually are more local variables in a recursive routine than in the equivalent iterative routine. One queue implementation discussed in this chapter dedicated an unused cell before the front of the queue to distinguish between a full queue and an empty queue. Write another queue implementation... Consider the list of individual 3NF relations below. These relations were developed from several separate normalization activities. PATIENT(Patient_ID,Room_Number,Admit_Date,Address)... Assume the following register contents: $t0 = 0xAAAAAAAA, $t1 = 0x12345678 1. [5] For the register values shown above, what is the value of $t2 for the following sequence of instructions? 2. For the... As discussed in the text, one possible performance enhancement is to do a shift and add instead of an actual multiplication. Since 9 6, for example, can be written (2 2 2 + 1) 6, we can calculate... Let T be a (possibly improper) binary tree with n nodes, and let D be the sum of the depths of all the external nodes of T. Describe a configuration for T such that D is Ω(n 2 ). Such a... Suppose an initially empty stack S has performed a total of 25 push operations, 12 top operations, and 10 pop operations, 3 of which returned null to indicate an empty stack. What is the current size... Four channels, two with a bit rate of 200 kbps and two with a bit rate of 150 kbps, are to be multiplexed using multiple-slot TDM with no synchronization bits. Answer the following questions: a. What... Ten sources, six with a bit rate of 200 kbps and four with a bit rate of 400 kbps, are to be combined using multilevel TDM with no synchronizing bits. Answer the following questions about the final... We have a baseband channel with a 1-MHz bandwidth. What is the data rate for this channel if we use each of the following line coding schemes? a. NRZ-L b. Manchester c. MLT-3 d. 2B1Q What is the Hamming distance for each of the following codewords? a. d (10000, 00000) b. d (10101, 10000) c. d (00000, 11111) d. d (00000, 00000) The light of the sun takes approximately eight minutes to reach the earth. What is the distance between the sun and the earth? Traditional checksum calculation needs to be done in ones complement arithmetic. Computers and calculators today are designed to do calculations in twos complement arithmetic. One way to calculate... In an 802.11 network, station A sends two data fragments to station B. What would be the value of the D field (in microseconds) that needs to be set for the NAV period in each of the following... We have the information shown below. Show the contents of the IP datagram header sent from the remote host to the home agent. Mobile host home address: 130.45.6.7/16 Mobile host care-of address:... Use Dijkstra's algorithm (Table 20.2) to find the shortest path tree and the forwarding table for node A in the Figure 20.35. Table 20.2 4. 4. 3. 3. To make the initial sequence number a random number, most systems start the counter at 1 during bootstrap and increment the counter by 64,000 every half second. How long does it take for the counter... Write a program to make the UDP server program in Table 25.1 more generic: to receive a request, to process the request, and to send back the response. Table 25.1 Table 25.1 Echo server program using... Modify, compile, and test the client program in Table 25.17 and the server program in Table 25.16 to allow the client to provide the pathname of a short file stored on the server host. The server... You have been assigned to design the database for a new soccer club. Indicate the most appropriate sequence of activities by labeling each of the following steps in the correct order. (For example,... Use the fact database and patron collection created in the text for use with MongoDB. Write a query to retrieve only the first name, last name, and type of faculty patrons that have checked out at... Use the fact database and patron collection created in the text for use with MongoDB. Create a new document in the patron collection. The document should satisfy the following requirements: First... How would you determine which orders have not yet been shipped to the customer? Figure 1-5: ORDERS Order# Customer# Orderdate Shipdate Shipstreet Shipcity Shipstate Shipzip Shipcost CUSTOMERS... List the title only of all books available in inventory, using the BOOKS table. Add a new row in the ORDERS table with the following data: Order# = 1023 and Customer# = 1009. Describe the error raised and what caused the error. Delete the CUSTOMERREP role from the Oracle 12c database. Which of the following is correct? a. The ORDER BY clause cant be used in the subquery of a CREATE VIEW command. b. The ORDER BY clause cant be used in an inline view. c. The DISTINCT keyword cant be... A random number generator produces numbers between 1 and 99. If the current value of the random variable is 45, then what is the probability that the next randomly generated value for the same random... A wireless receiver with an effective diameter of 250 cm is receiving signals at 20 GHz from a transmitter that transmits at a power of 30 mW and a gain of 30 dB. (a) What is the gain of the receiver... In a cellular system, diffraction, reflection, and direct path take different amount of time for the signal to reach an MS. How do you differentiate and use these signals? Explain clearly. Compute... During a busy hour, the number of calls per hour for each of the 12 cells of a cellular cluster is 2220, 1900, 4000, 1100, 1000, 1200, 1800, 2100, 2000, 1580, 1800 and 900. Assume that 75% of the car... a. Determine the power of each digit for five-digit numbers in base 6. b. Use your results from part (a) to convert the base 6 number 24531 6 to decimal. Alice can use only the additive cipher on her computer to send a message to a friend. She thinks that the message is more secure if she encrypts the message two times, each time with a different key.... Professor Olay is consulting for an oil company, which is planning a large pipeline running east to west through an oil field of n wells. The company wants to connect Figure 9.2 Professor Olay needs... Write pseudocode agent programs for the goal-based and utility-based agents. The following exercises all concern the implementation of environments and agents for the vacuum-cleaner world. Modify the HYBRID-WUMPUS-AGENT to use the 1-CNF logical state estimation method described on page 271. We noted on that page that such an agent will not be able to acquire, maintain, and use more... This exercise explores the differences between agent functions and agent programs. a. Can there be more than one agent program that implements a given agent function? Give an example, or show why one... In Section 15.3.2, the prior distribution over locations is uniform and the transition model assumes an equal probability of moving to any neighboring square. What if those assumptions are wrong?... What is the numeric value of each of the following expressions as evaluated by Java? a. 4 + 6 * 2 b. 10 / 5 + 8 c. 12 / 4 + 16 / 2 d. 17 / 2 e. 22 / 5 f. 39 / 10 g. 19 % (2 + 3) h. 3 + 4 * 20 / 3 i.... Write a program that declares variables to hold your three initials. Display the three initials with a period following each one, as in J.M.F. Save the program as Initials.java. The Harrison Group Life Insurance company computes annual policy premiums based on the age the customer turns in the current calendar year. The premium is computed by taking the decade of the... Sammys Seashore Supplies rents beach equipment to tourists. In previous chapters, you developed a class that holds equipment rental information and an application that tests the methods using three... A sequence of characters enclosed within double quotation marks is a ____________. a. Literal string b. Symbolic string c. Prompt d. Command The method parseInt() converts a(n) ____________. a. Integer to a String b. Integer to a Double c. Double to a String d. String to an integer You developed classes that hold rental contract information for Sammys Seashore Supplies. Now modify the Rental and RentalDemo classes as follows: Modify the Rental class to include an integer field... You created a CertOfDeposit class. Now, create an application to accept data for an array of five CertOfDeposit objects, and then display the data. Save the application as CertOfDepositArray.java. Create a class named Majors that includes an enumeration for the six majors offered by a college as follows: ACC, CHEM, CIS, ENG, HIS, PHYS. Display the enumeration values for the user, and then... a. The Talk-A-Lot Cell Phone Company provides phone services for its customers. Create an abstract class named PhoneCall that includes a String field for a phone number and a double field for the... Write an application that determines which, if any, of the following files are stored in the folder where you have saved the exercises created in this chapter: autoexec.bat, CompareFolders.java,... In this exercise, you modify the Savings Account application from this chapters Apply lesson. Use Windows to make a copy of the Savings Solution folder. Rename the copy Modified Savings Solution.... Design a 4-bit, 8-function arithmetic unit that will meet the following specifications: S2 0 0 0 0 1 1 1 1 S1 0 0 1 1 0 0 1 1 SO 0 1 0 1 0 1 0 1 F 2A A plus B A plus B A minus 1 2A plus 1 A plus B... Write an HDL module that implements the priority encoder from Exercise 2.36. Data from Problem 2.36 A priority encoder has 2 N inputs. It produces an N-bit binary output indicating the most... Open the VB2017\Chap11\FixIt Solution\FixIt Solution.sln file. Open the Code Editor window. Correct any errors in the code. Start the application. Click the Calculate button. The total on hand should... The vice president of accounting says to you, the IT director, This request procedure takes too long. My people know what they are doing and their systems requests are necessary and important. She... Implement the dictionary operations INSERT, DELETE, and SEARCH using singly linked, circular lists. What are the running times of your procedures? Write a program that animates MyHashMap, as shown in Figure 27.8. You can change the initial size of the table. Assume the load-factor threshold is 0.75. Firetox... Repeat Exercise 8.3 for the case when the fully associative cache outperforms the direct mapped cache. Data From Problem 3 Come up with a sequence of addresses for which a direct mapped cache with a... Show that any comparison-based sorting algorithm can be made to be stable, without affecting the asymptotic running time of this algorithm. Show that we can solve the telescope scheduling problem in O(n) time even if the list of n observation requests is not given to us in sorted order, provided that start and finish times are given as... Looking up a word in a dictionary can be a complicated process. For example, assume that you want to look up logic . You might open the dictionary to a random page and see juice . You know this word... A mobile phone app allows a user to press a button that starts a timer that counts seconds. When the user presses the button again, the timer stops. Draw a flowchart or write pseudocode that accepts... Glen Ross Vacation Property Sales employs seven salespeople, as shown in the Table 6-5. ID Number Salesperson Name 103 Darwin 104 Kratz 201 Shulstad 319 Fortune 367 Wickert 388 Miller 435 Vick Table... Assume that a working program contains the following statement: myDog.setName("Bowser") Which of the following do you know? a. setName() is a public method. b. setName() accepts a string parameter.... The general principle of exception handling in object-oriented programming is that a method that uses data should ___________. a. Be able to detect errors, but not be required to handle them b. Be... Travel Tickets Company sells tickets for airlines, tours, and other travel-related services. Because ticket agents frequently mistype long ticket numbers, Travel Tickets has asked you to write an... The equivalence of for and while loops, is not precise. Give an example in which it breaks down. Rewrite Figures 3.6 and 3.7 in C. You will need to use separate compilation for name hiding. Figures 3.6 Figures 3.7 #include namespace rand_mod { unsigned int seed = time (0); // initialize from... Consider the following pseudocode: x : integer := 1 y : integer := 2 procedure add() x := x + y procedure second(P : procedure) x : integer := 2 P() procedure first y : integer := 3 second(add)...
Showing 1100 - 1200 of 5000