Computer Network Questions and Answers August 26, 2022

Write C program to find and print r and t from x and y (the user has to enter the values of x and y), where r x y t tan y (in degrees) X Write a C program to find and print the sum of all even integers Act between (25,100) in a 55 array (all elements are entered by user). Go

What is the final value of Z in decimal,X13 Y134 Z XY

) An air is drawn through the main 60 cm diameter supply duct of an air conditioning system. The velocity before the fan is approximately zero and the after the fan is 10 ms. the pressure drop across the fan is such that the temperature change is negligible. Assuming the fan converts 85 percent of the electrical energy it consumes into kinetic

Write and perform an executable assembly program which performs the arithmetic operation. Firstly, the compiler adds odd numbers 0 to 29 and subtracts even numbers from result upto 28 using loop, JNZ commands. Identify status of flags and registers step by step Note Perform this task in NASM too. Write comments line by line and attach screenshot

write a program to cout Overload +, - ,*, /, ++, - - (both postfix or prefix), for the class Real numbers. Write a driver program to test your class

Consider the following processes along with their arrival time and burst time in milli seconds (ms) and perform the following. Draw the Gantt chart Calculate Waiting Time of each process 1 Mark Calculate Turn Around Time of each Process 1 mark Calculate Average waiting Time and Average Turn Around Time 1 Mark Using FCFS Scheduling for the

Consider a discrete time sequence xn a. 10 points Explain what Region of Convergence (ROC) in ZTransform means. b. 10 points Is it possible that ROC does not exist for a sequence xn Explain.

Write a program (Pseudocode or C) to read 50 pairs of integers. Each pair has two values. Your program should count the number of pairs that have the first value less than the second value of the pair. For example, if the input is as the following 8 16 30 22 13 13 27 16 10 20 Then we will end up having pairs (8, 16) and (30, 22) and (13, 13) and

Find the Ztransform X(z) and ROC of the following time signal xn 26n3 46n 1 46n 2

Write a pseudocode (or C code ) program to implement the following flowchart,False process (Integer c) Display Negative C0 Return True Display Positive

Whats the output of the following pseudocode Module f3(Integer Ref x,Integer y ) set yy2 set xxy End Module Module main() Declare Integer a3,b2 Call f3(a,b) Display a, , b End Module

What is the output of the following code class People() def init (self, job) self.job job def jobPrint(self) print(Job self.job) pl People(Engineer) p2 People(Teacher) pl.jobPrint()

You're a cybersecurity engineer at a mid-size social media start-up and it's a busy day at the office as your company prepares for the launch of its new mobile app. Hours before go-live, the marketing director runs over to your desk and grabs you in a panic. He explains that the marketing team needs to send sensitive customer data to an

A close friend of yours watched a few episodes of a cybersecurity TV show and has become the resident expert on all things cybersecurity-related. They point out that you should never use public Wi-Fi as all traffic sent over the Wi-Fi network can be viewed by an attacker. 1) Do you agree with their assessment? 2) Which protocol sends data in

The CTO of your social media company has asked you to install Data Loss Prevention (DLP) software in order to identify Customer Service Representatives who are stealing customer data. The Director of Customer Service is quick to point out that her representatives rarely ever access the customer database, and when they do, it's always over an

What is the result in hexadecimal notation of the following operation (1001) 2 AND (AF) 16 OR (32) 10 AND (17) 8 2

a) Convert the following infix expression into postfix using a STACK. Infix expression a2bcd b) Evaluate the postfix expression, a b c d for a2, b3, c2 and d1 using STACK c) Design a recursiveiterative algorithm for TOWER OF HANOI using one intermediate pillarpeg and show simulation for n 3, where n is the number of disks.

What is the output of the following code myList a, b, c, a, d, a for value in myList if(value a) myList.remove(a) print(myList)

Write a program to add a name in the list box when press add command and using the input box to enter a name. And remove name when press remove command. Then find a name when press search command, using the input box to write the name and message box to show the result. Finally, close the program when pressing the exit command. Form1 Add Remove

1. Write a program to Input store the midterm marks (maximum 20) of your courses and then calculate total marks of the courses and average marks. After calculation display the Marks, Total and average. (4 Marks) Now keeping in mind all these answer the following questions with your program screenshot and output. a. b. C. d. Write the input

write a pseudocode or C code program to implement the following flowchart

n Main Declare Integer A10 Declare Integer c Declare Integer i Seti 0 i 10 False Seti0 True Set Ai 1 i Setii1

The output logic expression of a digital system is given by Y (AB) CB i) Implement the output Y using NOR gates only. ii) Develop the truth table.,The output logic expression of a digital system is given by Y (AB) CB i) Implement the output Y using NOR gates only. ii) Develop the truth table.

Sample Input o 6 apple Sample Output o pplea,Write a program to accept the string and left rotate string n times Input Format Accept the n value and string as an input Output Format Print the rotated string Constraints

Consider the following (k k) systematic linear block code with the parity check digit Ck1 given by Ck1 (a) Construct the appropriate generator matrix for this code. (b) Construct the code generated by this matrix for k 3 and do d (c) Determine the error detecting or correcting capabilities of this code. (d) Show that THT ... dk1 1 CHT 0 if no

1. Consider the following transaction dataset, where each letter represents an item. TID 1 2 3 4 5 6 Items Bought N, E, W N, O, W W, E O, N, E O, W, N G, O (a) Assume that the minimum support is 30. Use the Apriori algorithm to find all the frequent itemsets in the dataset. (b) Give two association rules which have a minimum confidence of 60. (c)

Find the value of the decimal number that is represented by single precision IEEE 754 biased shown below. Show your work in detail. 0 0 0 1 0 0 0 1 1 01 0 0 0 1 1 011 0 0 0 0 0 0

Describe the differences between fullyassociative Caches and setassociative Caches. Explain breifly the tradeoffs when choosing the first cache type over the second one and vice versa. Assume a MIPs architecture.

3. Write a java class called House. A House has an owner (a name String), an area (a double) and a date when the house was built (a java.util.Date class object). Write constructors and set and get methods for the House class, and a toString method which returns a String consisting of the information about the house (the owners name, house area and

draw a DFA for the following regular expression a,b r (ab) . (aaaba)

write c program to declare any three variables, assign character in the first variable, integer number in the second variable and float in the third variable. I Q4 Write program to display your name,father name and family name.

2. Write a program to add elements of two 4x4 matrices and store it in third 3x3 matrix. Algorithm Read elements for Matrix A (4x4 Matrix). Read elements for Matrix B (4x4 Matrix). Add elements of each matrix and store it in Matrix C (4x4 Matrix). Display the elements of third Matrix.

9. Write a program that displays the following menu Geometry calculator 1 Calculate the area of a Circle 2 Calculate the area of a Square 3 Quit Enter your choice (13) If the user enters 1, the program should ask for the radius of the circle and then display its area. Use the following formula area nr where r is the radius and x 3.14159. If the

1. Write a Program to find sums of evenpositive, evennegative, oddpositive and oddnegative numbers in a given array (array size is 12) 3 Marks

Write a program using nested if-else statement that will implement the following table Loudness in Decibels Perception 50 or lower Quiet 51 - 70 Intrusive 71 - 90 annoying 91 - 110 very annoying above 110 uncomfortable

Write a Java program that implements the following features: Create an Employee class The Employee Class will have the following properties First Name Last Name Employee ID Hourly Pay Hours worked The Employee class will have the following methods Get and Set property values Compute total pay by multiplying hourly pay by hours worked The main

Write a program that asks user to enter an item's wholesale cost and its mark-up percentage. It should then display the item's retails price. The program should implement function in the code. Demonstrate a loop for calculation of retail price. Formula: wholesaleCost + (percentage/100 * wholesaleCost) Sample of output: Enter item wholesale cost:

Write a Python function to get Take from user 3 numbers. Use a function to get max of first 2 numbers. Compare output with the 3rd number to get max of all 3 numbers. Print output result. Note please show the steps and output in jupiter Notebook

23 45 66 77 100 12 40 37 9 82,Write a java method with the header public void Split (Queue Q) that takes Q as an argument and then creates 2 separate queues EvenQ, OddQ. This method moves all the even valued entries to the EvenQ and the Odd values to the OddQ. Find T(n) and the BigOh for your method. public interface Queue int size() boolean

1 Please calculate the Best, Average and Worst time complexities of the function below. (Assume length of the array equals to n) function itemExists(array, item) ( for (int i 0 i array. length i) if (arrayi item) return true return false

You are asked to develop C and Assembly programs separately that computes the square of a provided integer number N, i.e.., N. Algorithm The number N should be multiplied by 2 as required. Then the program adds the lacking term to the previously multiplied part or subtracts the residual term from the previously multiplied part. For instance,

Solve each of these congruences. Please write down the process of finding multiplicative inverses. If you just write down the answer, you will get 0 point even if the answer is correct. (a) 2011z 123(mod 2711) (b) 3675x291(mod 4409) (c) 777 896(mod 2311)

Solve this system of linear congruences. If you just write down the answer, you will get 0 point even if the answer is correct. z 2(mod 7) z 3(mod 17) 15 (mod 23) z14(mod 27)

Consider the following simplified version of the RSA algorithm for public cryptography (i) Bobs public key is a pair (n, e), where n is a prime number and e is a positive integer that is smaller than n and is relatively prime with n1 (ii) Bobs private key is d e mod (n1). (iii) Alice encrypts a message m(0

i. ii. Define each of the following a. Throughput b. CPU Time c. Response Time A program runs for 10 seconds on a computer with 2 GHz clock. Find the number of CPU cycles taken by this program.

Given the following declaration int x int P Which of the following expressions is allowed Select one O O O O a. x p b. px c. p x d. p x

What is the time complexity of the following algorithm public static void main() int n110 int n2 20 if(n2 n1) for (int i 0 i

1 A boy has his money deposited 1000, 1500 and 2000 in banksBank A, Bank B and Bank C respectively. We have to print the money deposited by him in a particular bank.Create a class Bank with a method getBalance which returns 0. Make its three subclasses named BankA, BankB and BankC with a method with the same name getBalance which returns the

The following rows are matches. Row Mask Metric 10712cost metric 30 22014cost metric 100 68218cost metric 50 68218cost metric 40 What is the bestmatch row Why

Write a program reads in locations followed by 12 lines of numbers that represent amount of rainfill for each month in that location. The program keeps reading until it encounters endoffile. It must work for any number of locations. Do not assume that you know how many locations there are. Produce a nicely formatted report that shows the location,

Explain the 9 control signals in the MIPS pipeline. Explain the implications of 0 and 1 values for each of them separately, as and when applicable. (4.5 points) Q3. Consider the following instruction (4.5 points) Instruction AND Rd, RS, Rt Interpretation RegRd RegRs AND RegRt a. What are the values of the control signals generated for the above

3. Consider the producerconsumer problem. Explain how and why the following solution does not work (20 points) S1 Producer W(S) While (count bufsize) do nothing counter counter 1 bufferin nextproduced in (in1) mod bufsize S(S) Consumer W(S) While (count 0) do nothing counter counter 1 consumed bufferin out (out1) mod bufsize S(S)

The Mirai botnet, composed primarily of embedded and IoT devices, took the Internet by storm in late 2016 when it overwhelmed several highprofile targets with massive distributed denialofservice (DDoS) attacks. Critically analyse and report a. Attack mechanism b. Implication to the victim services c. Available prevention mechanism Of the following

Write a C program as described below. Call this program piglatin.cpp. Write a program that translates normal text in Pig Latin. Pig Latin translates words into the following way words that start with consonants have the consonant stripped and added as a suffix along with the string ay words that start with a vowel are appended with the string ay.

Suppose a byteaddressable memory with 4 frames of size 64 bytes each and a paged virtual memory using a threeentry TLB. Suppose a process P has 10 pages of virtual memory space. Assume the following TLB and page table for process P 7 2 60 91 TLD OHN 1 2 3 4 5 6 7 6 3 1 3 1 0 0 0 1 O 0 0 1 2 1 8 7 O 9 1 1 Page Table 0 G 3 2 H 3 C Main Memory 0 1 2

1. Draw the flowchart for the following algorithm. Create the two lists below. Ask the user to login. First ask for their username. If the username is in the usernames list ask for the password, otherwise print username not found. If the password is in passwords list in the SAME INDEX as the username print login successful. Otherwise print wrong

Write a program for this application. A sensor measures the weight of the persons in an elevator and gives the measurement as a digital value. The sensor is connected to 4 pins so the measurement can be a binary number from 0000 to 1111. Select the pins of the sensor. If the measurement is larger than the maximum value (100) (1) the elevators

Write a program that evaluates the polynomial 8x 4x 2x Your program should . Prompt the user to enter a value for z. Display the value of the polynomial at z. Use a function to compute the value of the polynomial. Handle the user interface in the main function.

Write a program for three tone siren generation. Write a program to generate a three tone siren using the boards buzzer with each tone lasting for half a second. The frequencies of the three tones are 200 Hz, 500 Hz, and 1Khz.

Design and implement a class to compute the area of a triangle using the values of their sides. The design of class (named Triangle) should include 1) Three private members sidel, side2, and side3, which present sides of a triangle. 2) One private member area to preserve the computed area of triangle. 3) A default constructor (i.e., Triangle()) to

Suppose you send a 24bit photo with resolution of 1,024 x 720 to your friend at 23 km away. The channel data rate is 1 Gbps and the propagation speed is 2.5 x 10 ms. (a) What is the size of the photo in terms of bytes (5) (b) The photo is divided into frames before sending out at the datalink layer. Assume each frame carries 1,500 bits of data

Consider that you are going to send the message x, where x is the 8th digit of your student ID number. Each character is encoded by 8bit ASCII. (a) What is the bit stream of your message (b) Find the CRC remainder of the message using the generator polynomial X X 1. What is the bit stream to be transmitted Show your steps clearly. (10) (5) (c)

(b) Design a network of a company that consists of two offices in different physical locations in the world (One is in Australia one is in Hong Kong) (8) . Australia Office . (a) Finance department (2 x PCs) (b) Human Resource department (3 x PCs) (c) Administration department (1 x PC) (d) Research and Development department (3 x laptops) (e)

The single line diagram of the figure shows a generator connected through parallel transmission lines to a large metropolitan system considered as an infinite bus. The machine is delivering 0.9 p.u power, 0.866 power factor lagging. V 1.0 p.u. The transient reactance of the generator is 0.25 p.u. Determine (a) The power angle equation for the

Write a Java statement that implements the following algebraic equation assuming that all variables have double data type z 5y 4x 3x 2y Question 7 (3 mark) 1 ft 30.48 cm, write a program that converts length in ft into cm and print out. The input is a length in ft typed by user, the output is a length in cm. REQUIREMENTS The user input is

(a) (b) Propose the types of cable to be used to install networks in the following scenario. Explain the reasons for your choice. Access to the network is required in an underground laboratory. You are required to cable up 4 PCs that is in this lab to a server room which is located outside the premise. This underground laboratory employ the use of

The following algorithm concerns what happens when we take any positive integer n If n is even, then n is updated to n2 if n is odd, then n is updated to 3n1. The algorithm is continually applied, all positive integers will eventually reach 1. For example, if n 35, the sequence is 35, 106, 53, 160, 80, 40, 20, 10, 5, 16, 8, 4, 2, 1. Write a java

Write a program to get input from user and print the multiplication table of that number. The example of the table is as followed. If your input value is 1, then generate the table of that whole row,111 122 133 144 155 166 172 188 199 212 224 236 248 2518 2612 2714 2816 2918 313 326 339 3412 3515 3618 3721 3824 3927 414 428 4312 4416 4528 4624

8) What will be the value of ans after the following code has been executed int x 90, y 55, ans 10 if (x y) ans 2 A) 10 B) 145 C) 20 D) No value, there is a syntax error.

Write the Python code to generate the following output exactly as shown. You must use a loop. bb CCC dddd eeeee Question 22. Write a program that prompts the user to enter an integer. The program then arranges the digits of the integer such that they form the largest possible number. Example given 5219, the largest formed number is 9521.

Write a program that takes the value of x as the single input and displays approximate value of In(1x) using the following series In(1x)x for x 1 The series given above has infinite number of terms. However, you can only include a finite number of terms in the series. The absolute value of each subsequent term is smaller than that of the term

For this paper, and using properly cited material from this module's reading or research in the library, select an ethical problem that has at least three possible causes that a system administrator might confront. one page paper, address the following: State the ethical problem with at least three possible solutions. Analyze the problem and

2. (1.5 marks) Write down the solution u(x, t) of the diffusion equation with D 1 on an infinite domain x x corresponding to the initial condition u(x,0) 0 x 1 11 1 0 1

Perform the following conversions (i) 1810 to 6 bit 2s complement. (ii) ABC16 to base 2. (iii) 0.510 to base 2.

Write a Python program that controls an LED and makes it blinks such that it turns ON for three seconds and turns OFF for one second. Task 2 Add a switch to control the LED, i.e., your Python program should read the switch status and turn on or off the LED blinking from Task 1 accordingly. In addition to time and loop functionality (also needed in

Consider two sets of integers, X x, x2, n and Y y, 92, ..., yn. Write two versions of a FINDUNCOMMON(X, Y) algorithm to find the uncommon elements in both sets. Each of your algorithms should return an array with the uncommon elements, or an empty array if there are no uncommon elements. You may make use of any algorithm introduced in the

3. 6 Marks Klutzy Pty Ltds CEO has asked you to help organise its end of the year splurge. Every body invited, one of which must be the CEO, has to attend. Employees at Klutzy are organised into a strict hierarchical structure resembling a binary tree, where the root node represents the CEO. The data scientists at human resources have assigned to

1. Given the following code public class Test ( static String message private static class Worker extends Thread public void run() ( try ( sleep (1000) catch (InterruptedException e) message I work. public static void main(String args) throws InterruptedException (new Worker()).start() message I do not work. Thread.sleep(2000)

2. Consider the following class definition class Q2 private int count public Q2 () count 1 public void increase () count public int getCount () return count ,(a) Whats the output of the following user method public static void testl () Q2 obj new Q2 () obj.increase () obj.increase () System.out.println( obj.getCount () ) (b) Whats the

Consider the following payoff matrix for a zerosum game. Compute, using your favorite software, the optimal strategy of each player, and the expected payoff. A 2 1 3 2 1 4 3 0 2 1 3 0

4. Let A A1, A2,..., An and B B1, B2,..., Bn be arbitrary (not necessarily sorted) arrays containing 2n distinct positive integers. Array A dominates array B if it is possible to rear range the arrays in a way such that Ai Bi for all 1 i n. Describe an efficient algorithm that decides if array A dominates array B. What is the complexity of

Write a program in Python that a teacher might use to get the average of each students test scores. The program provides the user to enter the number of students, and also how many test per student. Use a nested for loop The for loop that begins first iterates once for each student. The nested inner loop, iterates once for each test score.

Consider the following message authentication code H 0, 1 0, 1n H(m) m mod k where k is an nbit secret. (n is say 120 so you cant simply guess k) a. Can you easily forge a MAC tag for some messages Which messages can you do this for b. Give the best chosenmessage attack that can think of that breaks the MAC (finds the secret key k). Be sure to

Design a synchronous sequential circuit using D flipflops for the state diagram shown below. Show the state diagram, state table, kmap minimization, and schematic in your design. Complete your schematic by adding the appropriate input switches, output LEDs, and 7segment displays. 00 11 11 10 00 10 11 00 01 10 00 01

Briefly explain the following: a. Two different variations for defining IoT network lifetime, other than until first node failure or last node failure b. One similarity and one difference between traffic shaping and traffic policing c. Two reasons why pruning data sources in an IoT network could be beneficial d. Two reasons such pruning may be

Write a program to calculate approximate value of pi using the following formula 2 4 31

4. Write a function called mean that will return the average value of an integer array. The integer array and its length must be passed to the function as parameters. 5.Write a function called max that will return the index of the max value of an integer array. The integer array and its length must be passed to the function as parameters. E.g.

chegg Desc 3. Let A A1,..., An be an array of n distinct positive integers (the value of these integers could be very very large). An inversion is a pair of indices i and j such that i Aj. For example in the array 30000, 80000, 20000, 40000, 10000, the pair i 1 and j 3 is an inversion because A1 30000 is greater than A3 20000. On the other

Let f(x, y) x 3xy By hand, compute the partial derivatives Set these partial derivatives to 0 and solve to find all critical points. Enter answer

When considering the brains role in sexual arousal and behavior, researchers have discovered a portion of the brain that is sexually dimorphic (different in males and females), the structure that appears more central to female sexuality is the in males. versus the VMH SDN of the MPA SDN of the MPA Pituitary Gland Pituitary Gland SDN of the MPA SDN

3. Write a program to dispense change. The user enters the amount paid and the amount due. The program determines how many dollars, quarters, dimes, nickels, and pennies should be given as change. Write a function with four output parameters that determines the quantity of each kind of coin.

The spinor value for a particle is given by a 1sqrt(2) 1, 1. a) calculate expectation value for Sx Sy Sz b) what are the probabilites for spin up and spin down if the spin of the particle is measured c) calculate the eigenvalues and the edge vectors for Sx.

Write a program that uses two parallel 5 element arrays an array of strings that holds the five salsa names, and an array of integers that holds the number of jars sold during the past month for each salsa type. The salsa names should be stored using an initialization list at the time the name array is created. The program should prompt the user

a 1) Consider we are computing power of n (i.e., b) using recursive design approach. Here n is the exponent and b is the base for which we need to compute the power recursively. Show your complete work and justify for the following problems. a. Provide the recurrence expression T(n) for this recursive power function. 4pts b. Provide the base case

A Resistance Temperature Devices (RTD) is used in the circuit shown at the location of R1. The RTD has a resistance of 1002 at OC. If the temperature coefficient of resistance is equal to 0.0039K and R2R3R4100 2. Find Vo when the temperature 50C if Vs 5V. Vs R Vo

What is the output of the following code void declare(int x, int size) const int t 3 for (int i0 i 3 i) xi xi t int main() int x3 1,2,3 declare(x, 3) for (int i0i 3 i) cout xi return 0

What is printed by the printf statement int p, b10 for (int i0 i 10 i) bi i p b printf(d d, p2, (p)

The output of the following code is void edit(int x, int size) for (int i0 i 3 i) xi xi 1 int main() int x3 1,2,3 edit(x, 3) for (int i0i 3 i) cout xi return 0

We want to design a function that computes and returns the perimeter and the area of a rectangle. However, a function can have only one return value. One way to solve this problem is use input parameters passed by reference. a) Define a function that computes the perimeter and the area of a rectangle. This function has four input parameter, the

a python code that solve Mathematically, if you have a mixed number in the form a you can easily calculate it decimal equivalent. For example 3 is equivalent to 4.4. Now, write a function todecimal() that takes a, b, and c of a mixed number as arguments and return the number in decimal format. . The following are sample runs of the program. Sample