FREE Trial S
study help categories /Computer science

Top Selling Computer science Questions

In distance-vector routing, bad news (increase in a link metric) will propagate slowly. In other words, if a link distance increases, sometimes it takes a long time for all nodes to know the bad... In HTTP, draw a figure to show the application of cookies in a web portal using two sites. One challenge for architects is that the design created today will require several years of implementation, verification, and testing before appearing on the market. This means that the architect... Add a column named Base_salary with a datatype of NUMBER(7,2) to the STORE_REPS table. Ensure that the amount entered is above zero. Attempt to log in to Oracle 12c with the newly created account. The Marketing Department of JustLee Books is preparing for its annual sales promotion. Each customer who places an order during the promotion will receive a free gift with each book purchased. Each... Which of the following is a valid SELECT statement? a. SELECT AVG (retail-cost) FROM books GROUP BY category; b. SELECT category, AVG (retail-cost) FROM books; c. SELECT category, AVG (retail-cost)... Which of the following SQL statements displays a customers name in all uppercase characters? a. SELECT UPPER ('firstname', 'lastname') FROM customers; b. SELECT UPPER (firstname, lastname) FROM... Given the message AACCCBCCDDAB, in which the probabilities of symbols are P(A) = 0.50, P(B) = 0.25, P(C) = 0.125, and P(D) = 0.125, a. encode the data using Huffman coding. b. find the compression... In a real-time multimedia communication, assume we have one sender and ten receivers. If the sender is sending multimedia data at 1 Mbps, how many RTCP packets can be sent by the sender and each... In general, how can you transform a relation not in BCNF into ones that are in BCNF? a. Create an application named Percentages whose main() method holds two double variables. Assign values to the variables. Pass both variables to a method named computePercent() that displays the two... In each case, determine and fix the problem. After you correct the errors, save each file using the same filename preceded with Fix. For example, DebugThree1.java will become FixDebugThree1.java. a.... Create a class that holds data about a job applicant. Include a name, a phone number, and four Boolean fields that represent whether the applicant is skilled in each of the following areas: word... a. Write an application that accepts three Strings from the user and, without regard to case, appropriately displays a message that indicates whether the Strings were entered in alphabetical order.... Three-letter acronyms are common in the business world. For example, in Java you use the IDE (Integrated Development Environment) in the JDK (Java Development Kit) to write programs used by the JVM... You modified the RentalDemo program for Sammys Seashore Supplies to accept and display data for an array of three Rental objects. Now, modify the program to use an array of eight Rental objects.... Micks Wicks makes candles in various sizes. Create a class for the business named Candle that contains data fields for color, height, and price. Create get methods for all three fields. Create set... Create a CourseException class that extends Exception and whose constructor receives a String that holds a college courses department (for example, CIS), a course number (for example, 101), and a... If a transmitting computer sends an 8-bit binary message 11000111 using an even parity bit. Write the 9-bit data with the parity bit in the most significant bit. If the receiving computer receives... Using DeMorgans theorem, draw logic diagrams for ABC + AB + BC (a) Using only AND gates and inverters. (b) Using only OR gates and inverters. You may use two-input and three-input AND and OR gates... Open the Amlie Solution.sln file contained in the VB2017\Chap02\Amlie Solution folder. If necessary, open the designer window. Organize the interface so that it follows the GUI design guidelines... In this exercise, you learn how to create a list box that allows the user to select more than one item at a time. Open the Multi Solution.sln file contained in the VB2017\Chap05\Multi Solution... Using De Morgan equivalent gates and bubble pushing methods, redraw the circuit in Figure 2.83 so that you can find the Boolean equation by inspection. Write the Boolean equation. B- C- D- E- Dor... Implement a function that accepts a PositionalList L of n integers sorted in nondecreasing order, and another value V, and determines in O(n) time if there are two elements of L that sum precisely... Implement the preorder method in BST using a stack instead of recursion. Write a test program that prompts the user to enter 10 integers, stores them in a BST, and invokes the preorder method to... Find out what networks are used at your school or place of work. Describe the network types, topological, and switching methods used there. Look at the computer ads on the business pages of a large daily newspaper and make a list of all the terms used that you dont understand. Save this list and check it from time to time during the... In this exercise, you modify one of the Waterson Company applications from this chapters Apply lesson. Use Windows to make a copy of the Waterson Solution-Highest folder. Rename the copy Waterson... Bill has an algorithm, find2D, to find an element x in an n n array A. The algorithm find2D iterates over the rows of A and calls the algorithm arrayFind, of Algorithm 1.12, on each one, until x is... Solve the previous exercise using a queue instead of stack. That is, suppose you are given an array, A, containing n numbers in order, as in the previous exercise. Describe in pseudocode an efficient... Give an example set of 10 characters and their associated frequencies so that, in the Huffman tree for this set, every internal node has an external-node child. In this exercise, you will create a program that displays a table consisting of four rows and three columns. The first column should contain the numbers 10 through 13. The second and third columns... In this exercise, you will 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. Use a... Assume that speed = 10 and miles = 5. What is the value of each of the following expressions? In Figure 3-10, the process of buying and planting flowers in the spring was shown using the same structures as the generic example in Figure 3-9. Use the same logical structure as in Figure 3-9 to... Create a lottery game application. Generate three random numbers, each between 0 and 9. Allow the user to guess three numbers. Compare each of the users guesses to the three random numbers and... What is output by each of the pseudocode segments in Figure 5-30? a. b. . a = 1 b - 2 C - 5 while a < c a = a + 1 b = b + c endwhile output a, b, c e = 6 f - 7 while d > f d - d + 1 e = e - 1... Design the logic for a program that outputs every number from 1 through 15 along with its value times 10 and times 100. Design the logic for a program that outputs numbers in reverse order from 10 down to 0. Design the logic for a program that allows a user to continuously enter numbers until the user enters 0. Display the sum of the numbers entered. Suppose that you have declared an array as follows: num values[4] = 0, 0, 0, 0. Which of the following is an allowed operation? a. values[2] = 17 b. input values[0] c. values[3] = values[0] + 10 d.... Create the logic for a program that accepts a users birth month and year and passes them to a method that calculates the users age in the current month and returns the value to the main program to be... Identify three different classes that might contain each of these objects: a. myBlueDenimShirt b. presidentOfTheUnitedStates c. myPetCat d. myCousinLindsey An int can hold integers only up to a maximum number. Find an approximation of that maximum number by using fibonacci(). Prove that the following grammar is LL(1): decl ID decl tail decl tail , decl : ID ; (The final ID is meant to be a type name.) Extend your solution to Exercise 2.21 to build an abstract syntax tree directly, without constructing a parse tree first. Data From exercise 2.21: Build a complete recursive descent parser for the... A biologist determines that the approximate number, Number, of bacteria present in a culture after a certain number of days, Time, is given by the following formula: Number = BacteriaPresent *... A university posts its employees salaries at http:// liveexample.pearsoncmg.com/data/Salary.txt. Each line in the file consists of a faculty members first name, last name, rank, and salary (see... The implementations of the methods addAll, removeAll, retainAll, toArray(), and toArray(T[]) are omitted in the MyList interface. Implement these methods. Test your new MyList class using the code at... Define a new class named BSTWithNumberOfNonLeaves that extends BST with the following methods: /** Return the number of nonleaf nodes */ public int getNumberofNonLeaves() Use... List the deliverables from the conceptual data modeling part of the analysis phase of the systems development process. A year with 366 days is called a leap year. Leap years are necessary to keep the calendar synchronized with the sun because the earth revolves around the sun once every 365.25 days. Actually, that... What are the six guidelines to follow when drawing DFDs? What are the advantages of online and batch processing, respectively? What are the advantages of online and batch processing, respectively? Find a current example of a large-scale grid computing project and describe it in as much detail as you can. What is the purpose of the project? What is the problem being addressed? How is grid... Assuming you have declared shoeSize to be a variable of type int, which of the following is a valid assignment statement in Java? a. shoeSize = 9; b. shoeSize = 9.5; c. shoeSize = "nine"; d. shoeSize... Figure 12-26 shows two typical executions of a program that displays a triangle. Create this program by prompting the user for a number of lines to display. The first row of the output contains the... Imagine that the problem in Exercise 3.ROMF, in which two friends try to meet up on the map of Romania, is modified so that one of the friends wants to avoid the other. The problem then becomes a... Consider a proposed new instruction named rpt. This instruction combines a loops condition check and counter decrement into a single instruction. For example, rpt $s0, loop would do the following: if... For the following C statement, write a minimal sequence of MIPS assembly instructions that does the identical operation. Assume $t0 = A and $s0 is the base address of C. A = C[0] < < 4; What is the minimum number of cycles needed to completely execute n instructions on a CPU with a k stage pipeline? Justify your formula. Define a function sumseries that takes a number n as argument and computes the series given here. Take the value of (sumseries 0) to be 0: Define a function called sumsquares that takes two integers as a parameter and computes the sum of square of numbers from the first number to the second number. Find a state-variable formulation for the system described by the coupled second-order difference equations given. The system output is y(k) , and e 1 (k) and e 2 (k) are the system inputs. y(k) =... Write a symbolic microprogram routine for the ISZ (increment and skip if zero) instruction defined in Chap. 5 (Table 5-4). Use the microinstruction format of Sec. 7-3. Note that DR = 0 status... Write the MIPS assembly code to implement the following C code as an atomic set max operation using the lI/sc instructions. Here, the argument shvar contains the address of a shared variable, which... Suppose you could build a CPU where the clock cycle time was different for each instruction. What would the speedup of this new CPU be over the CPU presented in Figure 4.21 given the instruction mix... Brewsters Used Cars, Inc. employs several salespeople. Brewster, the owner of the company, has provided a file that contains sales records for each salesperson for the past month. Each record in the... Create a Windows Forms application. Use the following names for the project and solution, respectively: Cookies Project and Cookies Solution. Save the application in the VB2017\Chap09 folder. a. Copy... Calculate the time necessary to perform a multiply using the approach given in Figures 3.3 and 3.4 if an integer is 8 bits wide and each step of the operation takes 4 time units. Assume that in step... Describe in detail an algorithm for reversing a singly linked list L using only a constant amount of additional space. In Figure 9.7, do you think that system A should first check its cache for mapping from N2 to L2 before even broadcasting the ARP request? Figure 9.7 Figure 9.7 ARP operation LAN System A System B... Manually simulate the Fletcher algorithm (Figure 10.18) to calculate the checksum of the following bytes: (2B) 16 , (3F) 16 , (6A) 16 , and (AF) 16 . Also show that the result is a weighted checksum.... Repeat Problem P16-9 for D-AMPS. Problem P16-9 Find the efficiency of AMPS in terms of simultaneous calls per megahertz of bandwidth. In other words, find the number of calls that can be used in... Combine the following three blocks of addresses into a single block: a. 16.27.24.0/26 b. 16.27.24.64/26 c. 16.27.24.128/25 Router A sends two RIP messages to two immediate neighboring routers, B and C. Do the two datagrams carrying the messages have the same source IP addresses? Do the two datagrams have the same... Assume the shortest path in a graph from node A to node H is A B H. Also assume that the shortest path from node H to node N is H G N. What is the shortest path from node A to node N? Find the interface identifier if the Ethernet physical address is (F5-A9-23-12-7A-B2) 16 using the format we defined for Ethernet addresses. Which tables and fields would you access to determine which book titles have been purchased by a customer and when the order shipped? Figure 1-5: ORDERS Order# Customer# Orderdate Shipdate Shipstreet... Add a new row in the ORDERS table with the following data: Order# = 1022, Customer# = 2000, and Order date = August 6, 2009. Describe the error raised and what caused the error. Given the following query: SELECT DISTINCT zip, category FROM customers NATURAL JOIN orders NATURAL JOIN orderitems NATURAL JOIN books; Which of the following queries is equivalent? a. SELECT zip... Use the following SELECT statement to answer. 1 SELECT customer#, COUNT(*) 2 FROM customers JOIN orders USING (customer#) 3 WHERE orderdate > '02-APR-09' 4 GROUP BY customer# 5 HAVING COUNT(*) > 2;... Which of the following statements is correct? a. If a subquery is used in the outer querys FROM clause, the data in the temporary table cant be referenced by clauses used in the outer query. b. The... Create a view that lists the name and phone number of the contact person at each publisher. Dont include the publishers ID in the view. Name the view CONTACT. In a DHT-based network, assume m = 4. If the hash of a node identifier is 18, where is the location of the node in the DHT space? Assume an ISP uses three leaky buckets to regulate data received from three customers for transmitting to the Internet. The customers send fixed-size packets (cells). The ISP sends 10 cells per... Show how the tables in your answer to question 4.25 solve the problems you identified in question 4.24. we mentioned iterative lengthening search, an iterative analog of uniform cost search. The idea is to use increasing limits on path cost. If a node is generated whose path cost exceeds the current... Consider a state space where the start state is number 1 and each state k has two successors: numbers 2k and 2k + 1. a. Draw the portion of the state space for states 1 to 15. b. Suppose the goal... This question considers representing satisfiability (SAT) problems as CSPs. a. Draw the constraint graph corresponding to the SAT problem ( X 1 X 2 ) ( X 2 X 3 ) . . . ( X n1 X n ) for the... Write a program that declares a variable named inches, which holds a length in inches, and assign a value. Display the value in feet and inches; for example, 86 inches becomes 7 feet and 2 inches. Be... Herberts Home Repair estimates each job cost as the cost of materials plus $35 per hour while on the job, plus $12 per hour for travel time to the job site. Create a class that contains a main()... a. Create a class named Sandwich. Data fields include a String for the main ingredient (such as tuna), a String for bread type (such as wheat), and a double for price (such as 4.99). Include methods... In each case, determine the problem and fix the program. After you correct the errors, save each file using the same filename preceded with Fix. For example, save DebugFour1.java as... you created a program named Triangle in which you displayed a seven-line triangle pattern like the one in Figure 6-33 by using a series of println() statements. Now, using your knowledge of loops,... A personal phone directory contains room for first names and phone numbers for 30 people. Assign names and phone numbers for the first 10 people. Prompt the user for a name, and if the name is found... You created a Salesperson class with fields for an ID number and sales values. Now, create an application that allows a user to enter values for an array of seven Salesperson objects. Offer the user... You created a Salesperson class with fields for an ID number and sales values. Now, create an application that allows you to store an array that acts as a database of any number of Salesperson...
Showing 1000 - 1100 of 5000