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Databases Questions and Answers February 22, 2021

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capture the hardware composition of a system in terms of the computers and their interconnecting networks Physical models Failure models Fundamental models Architectural models OOOO 1 2 is the delay between the start of message's transmission from one process and the beginning of receipt by another. Latency Message transmission time Data transfer
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For better readability digits in long literals can be grouped using underscore " ; for instance literal 0 b 0 0 0 0 _ 1 1 1 1 _ 1 1 1 1 permits easily see the encoding. What are the limitations of usage: T 4 ( 2 Puan ) applicable to any numeric literals applicable only to binary integer literals applicable only after setting appropriate compiler
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Assume that we want to make the following modifications on MIPS instruction set architecture. Please discuss the impact of these changes on the instruction format of the MIPS architecture. Change 1: Increase the number of registers to 128 Change 2: Support four times as many different instructions (Note that the total number of bits necessary to
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Question 7 Select the output of the following Python program: temp = 3 temp = 2*temp**2 temp = temp + 1 print("temp = ", temp) temp = 18 temp = 19 temp = 20 temp = 16 A Moving to another question will save this response
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make a ER daigram 10 - A A Aar Po Arial BIUab x, x AAA Font Paragraph Problem 2. Develop and ER Diagram based on the following information about the dient's small business documents Heather Sweeney is an interior designer who specializes in home kitchen design. She offers variety of seminars al home shows, kitchen and appliance stores, and other
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4 . 1 4 How many bits are required to represent the number - 5 3 4 in 2 ' s - complement binary?
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In a match game programmed in python, how can you make the game black out a single tile if the rows * columns ends with an odd number of tiles? So basically if the user enters that they want 3 rows and 5 columns, how can we randomly black out one tile to have 7 matches in the game?

(b) Write a recurrence for this algorithm and solve it to obtain a tight upper bound on the worst case runtime of this algorithm. You can use any method you like for solving this recurrence. Problem 2. Consider the algorithm below for finding the total sum of the numbers in any array A[1:n). TOTAL-SUM(A[1 : n]): 1. If n = 0: return 0. 2. If n = 1:
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Analyze the following code. public class Test { public static void main(String[] args) { System.out.println(max(1, 2)); public static double max (int numi, double num2) { System.out.println("max (int, double) is invoked"); if (numi > num2) return num; else return num2; ) public static double max (double numi, int nur2) System.out.println("max
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A college has five campuses. Each campus has IP phones installed. Each campus has an assigned IP address range. For example, one campus has IP addresses that start with 1 0 . 1 . x . x . On another campus the address range is 1 0 . 2 . x . x . The college has standardized that IP phones are assigned IP addresses that have the number 4 X in the

6.5 8.5 5.0 ppm Mohd Aminudin Mohd Zaibani, who runs an aquaculture business breeding freshwater fish in open ponds since 2009, went through various challenges when the fish he farmed died in large numbers. Raising fresh fish is quite challenging because natural factors such as temperature, pH level and dissolved oxygen content in the pond water
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Consider the following algorithm: a leftarrow 0 for i leftarrow 1 TO n - 1 do for j leftarrow i + 1 To n do for k leftarrow 1 To j do a leftarrow a + 1 return a (a) Identify the basic operation in this algorithm. (b) Provide the summation formula that represents the number of times this basic operation is executed. (c) Solve the summation equation
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Question 3 ( 5 points ) Convert the following ER diagram to Relational Model
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Question 7 ( 8 % ) What rule of inference is used in the following argument? Everyone in this class is either a MIS major or a CS major. Alice in this class is not a MIS major or is a senior. Therefore Alice is a CS major or a senior.
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due to improper validation in the input fields exploited by the attacker. What is the probable attack in the above scenario? a . SSRF b . SQL injection c . XSS d . XML Injection
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I want to write a program in java that will read dates from a file and identify which two dates have the fewest number of days between them and which two dates have the largest number of days between them and output those pairs of dates and the number of days between each pair. For this program, you will be provided with a Date class that you will
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What type of IDSs / lPSs monitors activity on network segments by sniffing traffic as it flows over the network and alerting a security administrator when something suspicious occurs? Network - based Host - based Active Passive
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( 2 0 points ) Convert the following grammar to L L ( 1 ) form by eliminating left recursion ( B , T and C are non - terminals. or , and, not, true, false, ( , and ) are terminals. ) Show that the converted grammar is L L ( 1 ) by ( a ) calculating the first set and follow set for each non - terminal, ( b ) calculating the predict set for each
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question1. Write the output that is printed when the given method below is passed the following map as its parameter: {pumpkin=peach, corn=apple, apple=apple, coffee=java, pie=fruit, peach=peach} Assume that each parameter map stores its key/value pairs in exactly the order shown, and that is the order in which a for-each loop would examine them.

Implement the question in the Exercise at the end of the Lab and submit the echo (f.e, result displayed by Oracle after each execution). 1) Add the following department to the DEP Table: DEPTNO = 'CM' and DNAME='Chemistry 2) Add the following COURSE: (301, 'Chemistry I', 'CM', 40). 3) Try to add the COURSE: (101, "Introduction to DOS', 'CP', 30).
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how do you do this on java This lab follows up the examples of hospital. Create a sub class named Administrator, which is also a kind of employee in a hospital. Please add the following structures to Administrator class. Additional requirement Identifiers for field Data type for field or methods or parameters for methods Field added department
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Question 3 [ 2 5 ] a ) Using Laws of Boolean Algebra, simplify the following expressions: i ) F ? b = a r ( A B + A ( ? b a r ( C ) ) ) + b a r A b a r ( B ) C ii ) , F = A B + b a r ( A C ) + A ( ? b a r ( B ) ) C ( A B + C ) ? [ 5 ] 4 iii ) Draw a truth table for a two input ( A and B ) logic system whose output is B only if A is zero;
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Web - based productivity software suites that require no installation on the computer are available. True False
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The Domain Name System (DNS) is a distributed database of resource records that includes Address records Name server records Mail exchange records All of these answers PGP was not developed by the government but is controlled by government standards. True False In PGP, confidentiality procedures are applied first, then authentication procedures.
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lowing 01) Mark the following statements as true or false. An output stream is a sequence of characters from a computer to an output device. (1) b. To use cin and cout in a program, the program must include the header file iostream. (1, 2) Suppose pay is a variable of type double. The statement cin >> pay, requires the input of a decimal number
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Background You have been called in to consult on the design of a "Green" house. This is to be located in Susquehanna County PA . The house is to consist of a single 1 5 0 0 f t 2 open living area ( 9 foot ceilings ) , and is to be heated by a wood burning stove. The insulation will be very well designed, and therefore the only major heat losses in
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Read RFC 5321 for SMTP. What is an SMTP Gateway? 1. A Gateway SMTP System is a system that receives mail from a client system in one transport environment and sends it to a server system in another transport environment. This may require changes in the message format. 2. An SMTP Gateway is a new version of SMTP that uses more complex mail body.

DSP Test if the discrete system y[n]=cos[x(n)] is Static or Non-static Linear or Non-linear, Causal or Non-causal, Time- invariant or Time-variant Static Non-static Unear Non-linear Causal Non-causal Time-invariant Time-variant
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Use city farmer.html and cycle.html and follow the Lab1 and Lab 2 instructions Complete Lab 1, pages 78-79, and create city farmer02.html file Complete Lab 2, pages 79-80, and create cycle02.html file Create HW3-YouLastName.zip file with cityfarmer02.html and cycle02.html files Send HW3-YouLastName zip file to Blackboard Lab 1: Creating a Home
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Good afternoon, I am having trouble with a python assignment. This is the criteria. Family Fitness Center has hired you to create a program that calculates the body mass index (BMI) for it's clients and lets them know their status based upon it. A client's BMI is calculated with the following formula: BMI = weight x 703 / height 2 The program

Consider a two - layered neural network y = ( W ( B ) ( W ( A ) x ) ) . Let h = ( W ( A ) x ) denote 1 point the hidden layer representation. W ( A ) and W ( B ) are arbitrary weights. Which of the following statement ( s ) is / are true? Note: g r a d g ( f ) denotes the gradient of f w . r . t g . g r a d h ( y ) depends on W ( A ) . g r a d W (
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Which of the following is not a valid type of statement in JDBC ? Question 4 options: Statement PreparedStatement CallableStatement QueryStatement

18) Suppose that height is a double variable, ch is a char variable, and name is a string variable. What are the values of height and name after the following input statements execute: cin >> height; cin.get(ch); gotline (ein, name); if the input is: a 5.4 Christy Miller 5.4 Christy Miller
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I have Task 1 1 as my computer lab assignment. Please show the code and the steps in your process.
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Which of the following is true? Select all that apply. \ table [ [ True , False,If a result has a high Page Quality rating, it may receive a high Needs Met rating even if it is unrelated to the query. ] , [ True , False,The NeedsMet rating is based on both the query and the result. ] , [ True , False,Broad know queries can have Highly Meets
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Instructions Case Study Two: Dell, Inc. Please answer the following discussion questions in detail. 1. Hos does Dell feel about Competitive Rivalry? What % of the total global market does Dell have? 2. Would you consider entering the computer industry? Why or Why not? 3. Discuss the three driving forces of the Computer Industry? 4. Discuss the
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Question 1 Which of the following categories of suspicious traffic signatures includes sniffing and password cracking attempts Denial of service Unauthorized access Informational Reconnaissance
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Register Indirect addressing is defined as follows: Group of answer choices None of these. Accessing memory through an address stored in a register. Accessing register contents as a value. Accessing a memory area specified and maintained by a pointer in the ESP register.

Which of the following options correctly represents a nested if structure? Group of answer choices if ( cost < 5 0 ) { if ( tax _ rate < 0 . 2 0 ) { . . . } } if ( cost < 5 0 ) { . . . } else if ( tax _ rate < 0 . 2 0 ) { . . . } else { . . . } All 3 represent nested if structure if ( tax _ rate < 0 . 2 0 ) { . . . } if ( cost < 5 0 ) { . . . }

Which of the following statements correctly describe data and data analysis? Select all that apply.Data is a collection of facts.Transformin data is part of the data analysis process.Data analysis is the creation of data.One goal of data analysis is to drive informed decision - making

Coding ExercisesImplement an ordering system for a fast - food restaurant. Write a function to display a menu to the user ( burgers , fries, coke, and checkout ) . Write a function to obtain the quantity of an item to order. The function should accept the name of the item ( " burgers " , "fries", "coke" ) as a parameter and return the quantity

Consider the following program (that illustrates a common pitfall): #include #include void tryToSwap(int, int); int main(void) { int num1 = 4; int num2 = 8; printf("%d %d ", numi, num2); tryToSwap (numi, num2); printf("%d %d ", numi, num2); return 0; } void tryToSwap(int numi, int num2) { int temp = num; num1 = num2; num2 = temp; } What will be
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PLEASE ANSWER USING C PROGRAM! // ========================== BEGIN INSERT FUNCTION DEFS TO WALK TREE ========================== // define 4 functions - preorder, inorder, postorder, depthFirst to walk tree, printing out data (char) // associated with each node visited: // void preorder (tnode_t* np) {} // void inorder (tnode_t* np) {} // void

please us ERD plus to develope a relational schema (relational data model) Exercise #7: (23 points) FirstName BusID Custo LastName BusName CountryofOrigin HOTEL TOURIST booked for books BOOKING Price DateoBooking booked via ChecidnDate Checkoutate TRAVEL AGENCY Agency (AgencyBus Name
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C++ The assignment this week is to develop a recursive algorithm to determine how many generations it will take before a population reaches a certain size. I have provided you with a function uint updatePopulation(uint n) that takes a population number and returns the next step in that population growth. The algorithm I'm using for this problem is

Making my own related to protecting the environment, would like another made of the same to make sure I understand everything if possible! Thanks for all you guys do! (Our class is using HTML) Please brainstorm or search on the web educational quotes or slogans related to diversity or protecting the environment. Choose one you might use to form a
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o produtos 10 Question The following Boolean function represents a combinational logic block between two registers: Y(A, B, C, D, E) = A (B (C(D+E))) The register timings (in ps) are: toog = 35 poy = 71 setup = 46 trold = 35 Iskew = 2 Thola 35 takey = 2 And per gate timings (in ps) are: pel = 17 Mod = 13 Calculate the mind me on Does the circuit
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Consider the following table to answer the questions a. Create a view named ComputerView that should show the columns SerialNumber and Make from the COMPUTER table. (3 marks) b. Create a stored procedure named ComputerProc that displays SerialNumber and then Main Memory and Disk Size combined as one attribute named ComputerSize from the COMPUTER
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Which of the following are the Python logical operators? = = , > , , , in , True, False and, or , not sometimes, plus, any Question 4 5 An if statement is known as a: logical persuasion conditional statement a Boolean assignment statement a non euclidian question
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Hello I need help with my assignment: Consider the arrival time and burst time of six jobs specified in the table below. a . Apply the Shortest Remaining Time to Finish ( SRTF ) with IO operating system algorithm. b . Generate a table to identify the process id , exit time, turnaround time, waiting time, and response time. c . Generate a Gantt
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What two things does an Operating Systems do ? Abstracts Hardware Manage Resources Notifies users Writes applications Provides I / O

Question 1 Fill in the blank: Naming _ _ _ _ _ are consistent guidelines used to describe the content, date, or version of a file. 1 point references conventions attributes descriptors

Use Matlab to iterate x(n+1)= F.(x(n)) for a large number (you choose a number but not fix points) of iterations. Use Matlab to plot the last portion (4-cycles) of the sequence {x(n)} as a function of u, to get a bifurcation diagram of Fit given, x(n+1)=u-(x(n)2-(1-x(n)) = F.(x(n)) with Eu(x) = 4X(1-x), X E [0,1]. >0. un-un-1 Note that quotient
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Write a program ( C + + ) whose input is a character and a string, and whose output indicates the number of times the character appears in the string. The output should include the input character and use the plural form, n ' s , if the number of times the characters appears is not exactly 1 . Ex: If the input is: n Monday the output is: 1 n Ex:

#include "CList.cpp" // printMenu displays a menu of choices and returns the user's choice int printMenu(); // InsertList inserts an item into the list parameter void insertListItem ( CList & ); // deleteList deletes an item from the list parameter void deleteListItem ( CList & ); // searchItem searches for an item in the list parameter void
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C++ You will create a binary search tree for a product catalogue. The catalogue will be used to display products. The programs user will add and delete products as well as be able to create an order of products. A product class will consist of a name, its price, and the number of items that the user is buying (all initial buying quantities are 0).

( 4 ) Using binary exponentiation, calculate manually 1 0 1 1 5 5 1 mod 3 1 1
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Each project you create on PyCharm has its own folder. True False
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MATLAB (15 points) Please write a User Defined Function (UDF) that has one input and three outputs. The input is a matrix, and the three outputs are (1) the average value of the input matrix, (2) the number of elements that are greater than the average value, and (3) the number of elements that are smaller than the average value. You must use
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A department store is having a customer appreciation sale. Depending on the total dollars purchased, the customer could receive a discount on his or her total purchases. You are to develop pseudocode or C# code that will obtain the total dollars purchased from the user, determine the discount percentage, and display the total amount due. When the

What tag is used to add visual layout to a page? ( : p : )
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3.7, 3.8, 3.9 Consider the following atomic propositions: u: V: P: x + y is valid Python * * y is valid Python * ** y is valid Python x + y is a list t: x + y is a list x is a numeric value y is a numeric value w: x is a list : y is a list S: Using these atomic propositions, translate the following (true!) statements about legal Python programs
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Create a query that lists the bocal oubanding bulances for students on a pryment plan and for these sudents that re not ion a proment plan. Show in the queny resuls only the sum of the then close it . WITHOUT THE SQL CODE
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Matlab help. Please write code that would go in the place of the "%your code goes here" annotation. LAB ACTIVITY 23.71.1: Is vector perpendicular to plane? This tool is provided by a third party. Your activity is always recorded but you may need to refresh the page to fill in the banner 0/10 Is vector perpendicular to plane? A function is needed
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Suppose a, b, and sum are int variables and cis double variable. What value is assigned to each variable after each statement-hexecutes suppose ab 3, and c-2.2 sum-static castint tabc ba: a-2b-c 12 + 4/4.0
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( Relational Operators ) Relational operators can be used to compare vectors to each other ( provided sizes match ) or to scalars and produce vectors of logical values. This can be useful for deciding which inputs satisfy a certain requirement.

C programming Write the code to create a text file called one.txt and write your name in that file. Then read 200 numbers from the keyboard and save each of the numbers in that file. Then close the file
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Using Android studio Java Create an android application: 1 . Add 3 more activities ( activity 2 , activity 3 , activity 4 ) and title each one 2 . To the main activity, add an image of your choice right below the title then add 2 buttons to open the 2 added activities. Provide also a multiline EditText to use for display. 3 . Activity 2 should

Security measures for dynamic Web pages are different from static HTML pages because: ( which one is correct? ) dynamic Web pages are built " on the fly." static Web pages contain more sensitive data. HTML is more complex than dynamic Web pages. the connection requires full access to the database for dynamic pages.

The Python code provided to start: import csv import sys FILENAME = "movies.csv" def exit_program(): print("Terminating program.") sys.exit() def read_movies(): try: movies = [] with open(FILENAME, newline="") as file: reader = csv.reader(file) for row in reader: movies.append(row) return movies except FileNotFoundError as e: print(f"Could not
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We discussed two Database Storage models for Database Management Systems. One was the NoSQL ( or Document Storage Model ) , and the other was the model. Network Recreational Relational Hierarchical
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Q 8 . How many times is statement 4 executed? ( 4 points ) ( a ) O ( N ) ( b ) O ( N 2 ) ( c ) O ( N 3 ) ( d ) O ( N 4 ) ( e ) none of the above

Question 1: Suppose we train a model to predict whether an email is Spam or Not Spam. After training the model, we apply it to a test set of 500 new emails (also labeled) and the model produces the following confusion matrix table. True Class Spam Not Spam Predicted Spam 70 30 Class Not Spam 70 330 (a) Compute the precision of this model with
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A Program: Use Python Ask the user to input 4 test grades as floats. Average the grades. Print out the test grades formatted with 1 place past the decimal as in the example output below Print out the average formatted with 1 place past the decimal Use formatting to have all numbers line up based on the decimal, Use if statements to determine the

In Java triangleWord - This method will return a string that when printed out will display a triangle. Each row of the triangle will have the next letter from the input argument as the last letter in the row If the next letter is the noPrint char, * will print out instead of letters for that row. See the output of the SampleDriver for details.
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The table contains some input - output pairs for the functions f and g . \ table [ [ x , f ( x ) , g ( x )
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Starting with the BinaryExpression learning activity solution from this week, Code a new class PostfixVisitor that visits an expression tree and returns the expression in postfix notation, with each part of the expression separated by spaces. For example, if the tree represented the expression 3 + 5, then the postfix result would be "3 5 +"

For this java project, you will create a Java program for a school. The purpose is to create a report containing one or more classrooms. For each classroom, the report will contain: The room number of the classroom. The teacher and the subject assigned to the classroom. A list of students assigned to the classroom including their student id and

A Layer 2 full - duplex switch with 1 0 0 M b p s ports will be able to send data at 1 0 0 M b p s from one connected computer to another but not receive data at 1 0 0 Mbps simultaneously ( Note: Both computers are connected to this L 2 switch ) . True False
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An unconfined groundwater aquifer is fed by water seeping through the permeable ground directly above. The bottom of the aquifer is impermeable bedrock, under which there could be an additional confined aquifer as illustrated in the figure below: Unconfined aquifers are the sources for wells used for drinking water and irrigation in most rural
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I cannot correct this error Search this course X DebugEight4.java >- Terminal 120 $m-f.class $ e editor to or logic ne and fix ax and ogram to 12 Scanner input = new Scanner(System.in); 9 int x = 0, y =; 10 String[] array = new String[100]; 11 String entry; final String STOP = "XX"; 13 StringBuffer message = new 14 StringBuffer("The words in
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Consider the grammar G = {{S}, {a, b, c), S, P} with production rules S absc S +1 (i) What type of grammar is this? Be as specific as possible. Generate two strings in L(G). (ii) What language does G represent? That is, what is L(G)? (ii) What type of language is L(G)? Explain fully. |
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Matlab Write a MATLAB program using a while loop to find all the narcissistic numbers from 100 to 1000 and count how many narcissistic numbers in total A narcissistic number is the number which equals to the sums of the cubes of their digits: 153 = 13 +53 + 33 The narcissistic number from 100 to 1000 are: 153 370 371 407 There are 4 narcissistic
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Using Visual Basic create a structure for a tin can, it should have properties for the following; Height, radius and color. Allow user to enter up to 5 0 tin cans using text boxes and a submit button. The tin cans should be stored in a 1 D array that is the type of your structure. Have a button that when clicked loops through the array and finds

2 Solving Horn Clauses We saw that the satisfiability of sets of Horn clauses can be determined simply by unit propagation. Use unit propagation to determine the satisfiability of the following Horn clause sets. 1. {PV-V w. - Vp. r. VV, UV, u) 2. {PV -q V-0, -, -r VP, P, Q = V tu V - V 8, 1} 3. {V V V p. } For each clause set, show each
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1. Consider the layers in TCP/IP reference model (Figure 1.22) of your text Assume that the user data is 1 KB. Sender Polic Application ITP SMTP RTP DNS Transport TCP UDP Dua Protocol int IP ICMP 1001010101100100101010110101001010101010 Link SONET 802.11 Et SAAREMETRE HTTP header is 128 bytes, TCP header is 20 bytes, IP header is 20 bytes, and
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A field that uniquely identifies each record. ID Primary key Common Numeric
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Which of the following SAP applications support the Lead-to-Cash process? Note: There are 3 correct answers to this question. SAP Fieldglass SAP Service Cloud O SAP Marketing Cloud SAP SuccessFactors SAP Sales Cloud
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consists of programs designed to work behind the scenes to handle detailed operating procedures. Internal data Decision support External data System software
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The Fibonacci Numbers are the numbers defined by F 0 = 0 , F 1 = 1 , and Fn = Fn 1 + Fn 2 for n > = 2 . ( So for instance F 2 = F 1 + F 0 = 1 + 0 = 1 , F 3 = F 2 + F 1 = 1 + 1 = 2 , and F 4 = F 3 + F 2 = 2 + 1 = 3 , etc. )

A modem is a device that modifies audio, video, and other types of data into a form that can be transmitted across the internet. primary storage solid - state storage secondary storage communication
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C++ problem I need to sort the following data from txt file by linked list display them first and than remove those population less than 4 miilion and display the list after remove Thanks for the help! Data: Idaho Boise 1,297,274 Washington Olympia 5,908,684 Vermont Montpelier 609,890 Hawaii Honolulu 1,216,642 Arizona Phonenix 5,140,683 Montana

Table Country has a column Name that currently accepts up to 4 0 characters. Write a statement that renames Name to OfficialName while keeping the number of characters accepted the same. ALTER TABLE Country
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Your task is to complete the missing code of AccountStack.java // array implementation of stack public class AccountStack { private AccountNode[] mystack; private int size; private int current_index; public AccountStack(int size) { // your code goes here: // constructor } private boolean isFull() { if(current_index==size) return true; else return
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Which of the following is not part of the conceptual view of a von Neumann architecture central processing unit ( CPU ) ? ALU Control Unit Interface Unit Main memory
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Write and register an event handler that changes the background color of the h 1 tag to blue on mouseout.Write and register an event handler that changes the background color of the h 1 tag to blue on mouseout. Checking background color on h 1 element before any event Yours Yours has no value x Checking background color on h 1 after event on h 1
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X 1 2 8 8 : Collision Resolution A collision occurs when two entries have a hash key that points to the same slot in resolution strategy that stores the entry outside the hash table is called: Your Answer: Select one answer: open hashing open addressing closed hashing hashkey with mod
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class SomeClass { SomeClass ( ) ; / / A SomeClass ( string name ) ; / / B SomeClass ( string name, int num ) ; / / C } Given the three constructors above, indicate which will be called for following declaration: SomeClass myObj ( ) ; class SomeClass { SomeClass ( ) ; / / A SomeClass ( string name ) ; / / B SomeClass ( string name, int num ) ; / /

ased on the following ER diagram, which entities have a Many relationstip with the JS entity? DISPATCH and MAINTENANCE MAINTENACE AND DRIVER DISPATCH and KINDOFBUS KINDOFBUS and MAINTENANC
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TCP segments are passed down to the network layer where they separately encapsulated into which of the following? IP bytes IP datagrams MAC packets TCP pouches

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