Ultimate Engineering Study Guide - Questions & Answers

Do-WhileDescription:In this activity you will learn how to use a do-while loop. You will be printing 20 to 1. Please follow the steps below:Steps:Create a do-while loop that prints out the numbers from 20 - 1. You can declare an int variable before the do-while loopTest:Use the test provided.Sample output:2019181716151413121110987654321code:class Main {public static void main(String[] args) {// 1. Create a do-while loop that prints out the numbers from 20 - 1. You can intitalize an int variable before the do-while loop}
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The discrete-time signal range of amplitudes: R which can be re-scaled, should map to the full Analog-to-Digital Converter range True False
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This question relates to AES encryption. Element (0, 0) of the state array initially containing the plaintext is C6. The first four bytes of the key for round 0 are EO, BA, 96, 50. What is the value of element (0, 0) of the state array after the completion of round 0? Please note that all numbers are expressed in hexadecimal. Use exactly two hexadecimal digits in your answer.
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Write a Python program to solve the following problem. Your solution should include a readme.md file (which includes details of how to run your assignment) and your Python program in a file named clean.py, and be submitted as a single .tgz file named pt3.tgz. You should ensure your solution works using the Python 3 interpreter on turing. Problem After adding additional busses to the routes you suggested, Codetown council is getting far fewer complaints about people missing their bus. However, complaints about the cleanliness of the busses are an issue Codetown's mayor would now like to address. The mayor's plan is to add a touchscreen device, running a program you develop, to each bus so passengers can indicate the current cleanliness. Your program must provide a graphical user interface that prompts users to enter a rating for the current cleanliness of the bus. The user should be able to choose an integer value between 1 and 5. Once at least one rating has been entered, the system should display the average rating given for the bus. Note: The specifications for this assignment are deliberately very brief. If anything is unclear, please use the discussion forums to clarify anything you are unsure of. Program specifications are often incomplete, and it is a useful skill to be able to elicit actual requirements.
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Choose the best choice of data structure from among Queue, Stack, Hash Table, or Binary Search Tree for the following situations. Provide a short justification for your answer:(a) The "back" functionality of a web browser.(b) Finding the person with the next upcoming birthday in a class of 30.(c) Storing order information for customers in a single-lane drive-through.(d) Storing order information for customers using online or mobile ordering.
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Distributing data and processes are common techniques to provide scalability with respect to size, but often introduce geographical scalability issues. Give an example of a real-world system in which this occurs and what problems arise as a consequence.
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QUESTION 1Is it possible that the 'finally' block will not be executed?YesO NoQUESTION 2A single try block and multiple catch blocks can co-exist in a Java Program.O YesO NoQUESTION 3Anin Java is considered an unexpected event that can disrupt the program's normal flow. These events can be fixed through the process of
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Which of the following router queuing policies might result in a situation where it is possible for a datagram to get stuck in the queue indefinitely (without being dropped)?O Process the datagram with the shortest payload firstFirst-in-first-out (FIFO)Random selection of a datagramRound Robin across multiple queuesConsider the subnet 123.45.24.0/21, which can support up to 2048 hosts. Which of the following sets of 4 subnets represent a partitioning of this subnet into 4 equally sized subset subnets of size 512 hosts each?123.45.24.0/22 123.45.24.1/22 123.45.24.2/22 123.45.24.3/22123.45.24.0/23 123.45.26.0/23 123.45.28.0/23 123.45.30.0/23123.45.24.0/23 123.45.25.0/23 123.45.26.0/23 123.45.27.0/23123.45.24.0/23 123.45.24.1/23 123.45.24.2/23 123.45.24.3/23123.45.24.0/22 123.45.24.2/22 123.45.24.4/22 123.45.24.6/22
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3.4 Implement the Control classA skeleton Control class has been provided for you, and it is posted in Blackboard in the project as project.zip file. You will implement the Control class so that it contains the following data members:the Book Club object to be managedthe View object that will be responsible for most user I/O; the View class is provided for you.You need to complete it.The Control class will contain the following member functions:a default constructor that initializes the data membersan initBooks() member function that initializes the Books contained in the Book Cluban initMembers() member function that initializes the Club Members contained in the BookCluba launch() function that implements the program control flow and does the following:call the initialization functionsuse the View object to display the main menu and read the users selection, until the userexitsif required by the user: print the data for all the members in the book clubprint the data for all the books in the book cluballow the club member to rate a specific book, giving it a numeric value between 1 and10compute and print out the best rated book (the book with the highest average ratingentered by the members who rated that book) and the most rated book (the book withthe greatest number of ratings) in the book clubexit the program
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What is performed by the following PHP code?$result = mysql_query("SELECT * FROM FriendsWHERE FirstName = ' Perry'");
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BooksStudyCareerCheggMateFor educatorsHelpSign inFind solutions for your homeworkFind solutions for your homeworkSearchengineeringcomputer sciencecomputer science questions and answers#include #include #include #include #include #include #include // for sqrt /* lab: computing stats with lambda functions todo: open and load the values from the file into a list container iterate through the container using for_each compute and printThis problem has been solved!You'll get a detailed solution from a subject matter expert that helps you learn core concepts.See AnswerQuestion: #Include #Include ≪List≫ #Include ≪Vector≫ #Include ≪Fstream≫ #Include ≪Algorithm≫ #Include ≪Random≫ #Include ≪Cmath≫ // For Sqrt /* Lab: Computing Stats With Lambda Functions TODO: Open And Load The Values From The File Into A List Container Iterate Through The Container Using For_each Compute And Print#include #include #include #include #include #include #include // for sqrt/*Lab: Computing Stats with Lambda FunctionsTODO:Open and load the values from the file into a list containerIterate through the container using for_eachCompute and print out the following statistics using ONLY for_each and "in-line" lambda functions (as arguments to the for_each call)sumaverage (the mean)median (you can pre-sort the values if you likestatistical variance: sum of the (differences from the mean)^2print out the values that are prime numbers (tricky!)*/using namespace std;//// LOAD FILE (written for you)//void loadFile(string fileName, list &allValues) {cout value){allValues.push_back(value);}cout
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Provide an example that clearly describes differences among stacks, queues, and hash tables. This can be an example described in laymans terms or a visual description (i.e., a stack of dishes); please do not provide a non-technical analogy.
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Which of the following best describes the information that one AS communicates to other AS's via the BGP protocol?A. O it broadcasts a set of policies that neighboring AS's must follow when handling datagrams originating within its own ASB. It transmits a data structure that describes the network topology of its AS so that neighboring AS's can use this data to feed to their routing algorithms (e.gDijkstra)C. It queries neighboring AS's to see if they can route to a particular destination host once the gateway router receives a datagram destined for that hostD. It advertises a list of hosts to which it can route datagrams
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Discuss how the configuration of software willhelp a given user perform their tasks.
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Define a network that would be suitable forA. Client-Server architecture.B. Peer-to-Peer architecture.draw a diagram for the network. For the client-server, your network should connect client devices node1, node2, node3, laptop4, laptop5, and laptop6 to one or more servers over an internet network. You can add as many other devices (switches, routers, nodes, access points, busses, etc.) to the network as you wish, using the same naming scheme as in the previous parts.For the peer-to-peer, you can add as many other devices (switches, routers, nodes, access points, busses, etc.) to the network as you wish, using the same naming scheme as in the previous parts.Thank you.
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Given the following program/code segment program, how many times is "hello\n" printed on the standard output device? Justify your answer.import osdef main(): str1 "hello, world!" =for i in range(3): os.fork(print(str1)if _name_ main() 'main_':
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QUESTION 8In Network Address Translation, why does a router assign different source port numbers in addition to converting local addresses to the external NAT IP address when forwarding datagrams externally (as opposed to keeping the original port numbers)?The port numbers are effectively being used to identify local hosts, and re-assigning port numbers helps to avoid any collisions wherein two hosts in the subnet are sending external requests with the same source port number.Because NAT takes advantage of the fact that port numbers are also 32 bits long, meaning they can be used as aliases for IP addresses.O Because NAT is a transport layer protocolBecause there is a reserved set of 128 port numbers exclusively for NAT that all outbound datagrams must use.QUESTION 9Which of the following best describes the action of forwarding?Moving a datagram from a router's input port to the correct output post so that it can continue on its path to the destination.Broadcasting a datagram to all hosts to return a response if their IP address matches the one in the request.O The transmission of a datagram from one autonomous system (AS) to another via BGP.O Determining an optimal or near-optimal path from the current router to the destination host.
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10. Assume we have 8 visible registers, RO-R7, several secret registers S0-$7, and we have a pipeline of 6 stages:Instruction Fetch (IF)Instruction Issue (II), Operands Fetch (OF), Execution (EX), Write Back (WB), and Commitment (CO)Each stage needs exactly 1 cycle to finish its work.Also assume that the pipeline supports forwarding (the result of WB can be forwardedto OF), register renaming, and out-of-order execution. Given the following piece of instructions:11: R 2=R0+R112: R 3=R2+R013: R 0=R1+R214: R 6=R0+R7(1) Identify the Read-After-Write dependences and Write-After-Read dependences in the code segment above. You may assume there is no instruction before 11. (3%)(2) Show which of the registers should be renamed to get rid of Write-After-Read dependence. Write down the instructions after renaming. (4%)(3) Show the new order of the instructions(5%)
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Convert to MIPS ASSEMBLY L;ANGUAGEfunction gcd(a, b)while a b if a > ba := a belseb := b areturn a
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2. Describe the term software refactoring.[2 Marks]Refactoring is the process of making improvements to a program to slow down degradation through change. You can think of refactoring as 'preventative maintenance' that reduces the problems of future change. Refactoring involves modifying a program to improve its structure, reduce its complexity or make it easier to understand. When you refactor a program, you should not add functionality but rather concentrate on program improvement.3. Predictions of maintainability can be made by assessing the complexity of system components. Identify the factors that depends on complexity.[2 Marks]a. Complexity of control structures:b. Complexity of data structures;c. Object, method (procedure) and module size
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Create a menu that will allow you 5 selectionsfor items and one to exit. Inside the menu you need to read user input todecide which of the 5 selections After a menu item is executed, the screenshould be repainted with the menu until the userspecifies that they want to finish. You need to somehow handle incorrect userinput, but only exit if they choose your exit option For this part, you only need to print a messagefor each of the 5 selections. Next week you willadd functions for each selection.Sample MenuMenu1. Selection 12. Selection 23. Selection 34. Selection 45. Selection 5Enter Your Selection ( x to Exit) ==>Menu Item Functionality You need to bring the system down for maintenance and call the users to letthem know. This selection finds out who is logged in, pulls the first nameand the telephone number out of the addressfile and displays it to thestandard output. The user stu23 has gone home for the day and left his processes running.You want to find those processes and stop them. You want to use thisoption in the future so it will prompt for the user name, find and stop allprocesses started by that user (include an "are you sure" message). It is discovered that two users have the same user id in the address file.This option checks the addressfile for that situation and, if it exists, promptsyou for a new userid which it will fix in the file with. Your Boss has asked for a list of all users, but does not care about theuserid. This option will pull out all users and sort them by last name but theoutput should be : Firstname Lastname Address Town Telephone number The users are storing way too many files in their home directory and youwould like to notify the top 5 offenders. You might want to run this scriptagain for more or less users so this selection will prompt for the number ofusers to identify, check how many files they have in their home directoryand send a list of those users to the standard output.File belowstu1:Tom Arnold:1234 Apple St:Toms River:NJ:732 555-9876stu2:Jack Black:2345 Baker St:Jackson:NJ:732 555-8765stu3::Tom Cruise:3456 Charlie St:Manchester:NJ:732 555-7654stu4:John Depp:4567 Delta St:Toms River:NJ:732 555-6543stu5:Dan Elfman:5678 Zebra St:Point Pleasant:NJ:732 555-5432stu6:Henry Ford:6789 Xray St:Jackson:NJ:732 555-4321stu7:John Glenn:9876 Cherry St:Bayville:NJ:732 555-1234stu8:Jimi Hendrix:8765 Rutgers St:Manchester:NJ:732 555-2345stu9:Marty Ichabod:7654 Hollow St:Wall:NJ:732 555-3456stu10:Mike Jackson:6543 Thriller St:Toms River:NJ:732 555-4567stu11:Ashton Kutcher:5432 Demi St:Jackson:NJ:732 555-5678stu12:Jude Law:4321 Watson St:Point Pleasant:NJ:732 555-6789stu13:Nelson Mandela:2468 Apartheid St:Toms River:NJ:732 555-8321stu14:Jim Neutron:468 Electron St:Beachwood:NJ:732 555-5285stu15:Rory Oscar:135 Academy St:Berkeley:NJ:732 555-7350stu15:Brad Pitt:579 Jolie St:Manahawkin:NJ:732 555-8258stu17:Don Quaker:862 Oatmeal Dr:Wall:NJ:732 555-4395stu18:Tony Romo:321 Simpson St:Beachwood:NJ:732 555-9596stu19:Will Smith:8439 Robot St:Manahawkin:NJ:732 555-2689stu20:Tim Burton:539 Skellington St:Toms River:NJ:732 555-9264stu23:Mel Gibson:274 Raging St:Bayville:NJ:732 555-1234
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Given two Binary Search Trees, describe an algorithm to determine if the trees are the same. The trees are considered to be the same if they have identical values and identical structure. You may wish to include pseudocode and/or diagrams to aid in your description or to assist with your reasoning about the problem
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Suppose you connect your laptop into a university network (either via wired ethernet or 802.11 wifi). How does your laptop get assigned an IP address with which it can send datagrams across the internet?a. IP addresses are unique to each NIC, and therefore, a device does not need to take any action to obtain an IP address. b. Every student is assigned a unique and static IP address for every laptop or device they register with IT.c. The laptop sends out a special ethernet (or 802.11) frame asking all hosts within the subnet to return their IP addresses. The laptop is free to select any IP address that is not in the returned IP address list d. The laptop sends out a DHCP request over UDP to the local DHCP server to obtain an available IP address.
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CASE STUDY : The Terror Watch List Databases Troubles Continue1. What concepts in this chapter are illustrated in this case?2. Why was the consolidated terror watch list created? What are the benefits of the list?3. Describe some of the weaknesses of the watch list. What management, organization, and technology factors are responsible for these weaknesses?4. How effective is the system of watch lists described in this case study? Explain your answer.5. If you were responsible for the management of the TSC watch list database, what steps would you take to correct some of these weaknesses?6. Do you believe that the terror watch list represents a significant threat to individuals privacy or Constitutional rights? Why or why not?
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