Computer Network Questions and Answers August 28, 2022

4. (a) Consider an Elmantype recurrent neural network (RNN) that receives 2 dimensional input patterns x E R and has one hidden layer. The RNN has five neurons in the hidden layer and two neurons in the output layer. We denote the weight matrices connecting the input to the hidden layer as U, the weight matrices connecting the previous hidden

Write a piece of code in Python that grabs N in the input and print out the N number of the sequence below (in this example, the user had entered 10 as the number of the desired terms) 1 1, 5 1, 5, 12 1, 5, 12, 22 1, 5, 12, 22, 35 1, 5, 12, 22, 35, 51 1, 5, 12, 22, 35, 51, 70 1, 5, 12, 22, 35, 51, 70, 92 1, 5, 12, 22, 35, 51, 70, 92, 117 1, 5, 12,

Consider the following Python list 34, 6, 20, 10, 30, 56, 50 Suppose the elements in the above list are inserted into an initially empty minheap in that order. What does the binary minheap look like Draw the resulting tree in the answer box below.,Consider the following Python list 34, 6, 20, 10, 30, 56, 50 Suppose the elements in the above list

Please find the f(xyz) for the below circuit. x 1 2x1 2 (f(x,yz) y do Z Your answer O xy xzyz O xy xzyz O xy xzyz oxy xzyz O None of them, Please find the f(x,yz) for the below circuit. x Io 2x1 2 (f(x, y, z) y do Z Your answer oxy xz yz oxy xz yz O xy xz yz O o xy x2 yz O None of them

As a Network Administrator (NA), you are requested to setup a data centre. What are the factors that you would consider in terms of disasters and recovery mchen aisms Justify your answers by providing examples. You may use diagram or assumptions to help in your explanation.

5) Design, develop and implement C program to construct Predictive LL(1) Parsing Table for the grammar rules SAA, AaA b. Use this table to parse the sentence abab.,5)Design, develop and implement C program to construct Predictive LL(1) Parsing Table for the grammar rules SAA, AaA b. Use this table to parse the sentence abab.

The following picture shows an example of a Korchoff Graph. It is a weighted, directed graph. As you can see the graph has a binary tree component at is center. Moreover, there are edges going from each leaf of the binary tree backto the root. All edges are weighted and the weights are nonnegative. We wish to compute singlesource shortest paths in

Design, develop and implement a CJava program to generate the machine code using Triples for the statement AB (CD) whose intermediate code in threeaddress form T1B T2CD T3 T1T2 A T3,Design, develop and implement a CJava program to generate the machine code using Triples for the statement AB (CD) whose intermediate code in threeaddress form T1B

Which of the following codes could be used to detect the change on bit 3 of port C (PC3) and trigger an interrupt PCICR (1

In an application with ATmega328P the status of an input signal connected to pin 3 of port D is checked in an ifelse if statement. Which of the following options provides the correct macro to be replaced in the ifelse if statement define PD3ISHIGH PORTD (1

(c) Suppose that web server A sends a hypertext document to a web browser in machine B. Describe briefly what happens at each protocol layer. What does encapsulation mean in the context of network protocols 4 marks (d) Two wellknown protocols at the Transport layer are the Transmission Control Protocol (TCP), and the User Datagram Protocol (UDP).

Consider the following topology provided in Figure 2 below. Suppose Host B sends a datagram to Host E. For each of the following router links (i) B to Router 1, (ii) Router 1 to Router 2, and (iii) Router 2 to E Write (a) source MAC (b) destination MAC (c) source IP address (d) destination IP address used in each corresponding link. LAN

Assume that Alice and Bob are using the following authentication protocol (requires only three messages to achieve mutual authentication as shown in Figure4) for their chat application to establish a session key (K) for each communication. I am Alice, RAlice RBob RAliceBob (B mod NAlice RBobAlice A mod NBob Alice Bob Figure4 Authentication

Explain the difference between a router and a switch in a network?

What is the OSI model, and how does it relate to computer networks?

1 The contents of the shell script evensum.bash is shown below. Write down the output on when you execute it with the command .evensum.bash 10 binbash SUM0 for ((i0 i

Considering the following logic diagram, CLK 1J C1 1K Qo 1J C1 1K Q1 1J C1 1K Q2 (a) Write out the excitation equations and the next state equations. (6 points) (b) Construct the transition table of the sequential logic diagram. (6 points) (c) Construct the state table of the sequential logic diagram. (5 points)

Write down the outputs when you execute the following script binbash a5 b((a2)) echo b b let cb3a1 echo c c dexpr c a echo d d

Given the following coding import numpy as np arr np. array(2,2,1,3,2,3,7,4) i. Write a program that can find the dimension of the array Write a program that can find the indexes where the value is 2 Task 5 Write a program to compute the distance between two points (Pythagorean Theorem) by prompting the user to key in coordinator for P1 and P2

You have been assigned to write a software to convert between km per hour and meter per sec. The software should fulfill the following criteria i. Receive either msec or kmhour and leave 0 for the other. Exit program if both inputs are 0 and print out error message if the unit entered is not valid. ii. A function called kmhtomsec() to convert

Write a function which accepts two sequences of numbers from the user, each number separated by a comma and generates a list of common numbers between the two sequences. The resulting list can be in any order Example Output Enter the first sequence 1, 4, 2,7, 13,27 Enter the second sequence 7, 13, 2, 25, 39 Common numbers 7, 13, 2

What is the output of the program

include using namespace std int main() if int first 16 int second 8 ((first second 2) (second first 3)) second first 20 else if ((first second 2 second first 1)) else 10 second 15 first 5 first 10 second20 cout first return 0 11 11

Write a complete C program to calculate total pay which includes net salary and bonus. The sample of output is shown in Figure 1. The program is organized into several functions as follows double basic Salary () Ask the user to enter basic salary. double EPF (double) To calculate the amount of employee evident fund (EPF) deduction from basic

(iii) Which of the statements about protocol architecture are CORRECT Check all that apply 2 pts a. Packet network protocols are structured into layers such as ISO 7layer or IP 4layer. b. Protocol syntax refers to structure and information fields in control and data packets. c. Protocol semantics refers to actions to be performed on each packet.

1. A periodic taskset is to be scheduled on a preemptive processor under Earliest Deadline First (EDF). For a periodic task , denote its computation time with Ci, period with L. and relative deadline with Di. Assume that the first release of each task occurs at time zero. Task TI 22 T3 Computation Time Period 1 4 1 2 2 8 A periodic taskset

2. A periodic taskset as shown in Table 3 is to be scheduled on a preemptive processor. In addition, a job J with unknown arrival time and computation time of 5 units needs to be scheduled on the processor. Task TI T2 Computation Time 1 2 A periodic taskset Period 4 5 Deadline 4 5 a) (3 points) Assume Rate Monotonic (RM) scheduling for the

Write assembly language codes that will display the image below at the center after clearing the screen. Use appropriate functionsservices. USING DOSBOX

7. Given the code below. Write the outputs for each line of code. const arr 1, 2, 3, 4 write the output of the line below arr.push(5, 6, 7) Write the output of the line below. (suppose that the code above didnt change the array) arr.push(5, 6, 7) Write the output of the line below (both lines above are executed) console.log(arr)

Your program will take input from the console in the following format. It should not prompt the user in any way. The intent here is not to write a userfriendly user interface what youre actually doing is building a program that we can test automatically, so its vital that your program reads inputs and writes outputs precisely as specified below.

1. The bank account balances are a900, b300, c1000. What possible account balances can appear after concurrent execution of transactions bank transfer of 150 from a to c if (a 150) (ABORT) else bank transfer of 20 from b to c if (b 20) (ABORT) else (b b20 rbc rb (a a150 ra c rara 150 c ra rb 20 crb Modify the transactions so that their outcome

12. Let u and v be column vectors of length n. Define A square matrix of order n x n. (a) Give the general element Ai,j. What is the cost in number of operations to create A from u and u in the computer (b) uvT and note that A is a (c) What is the operations cost of evaluating Ax, where x is a general column vector of length n Give an alternative

Write an assembly language program which asks the user to enter hisher name and surname through the keyboard. After the entry The program clears the left top quarter of the screen and displays the name at the center of that quarter. Similarly the program clears the right bottom quarter of the screen and displays the surname at the center of that

4. Including the initial parent process, how many processes are created by the following program Assume that all fork() system calls succeed. include include int main(int argc, char for (int i 0 i 3 i) argv) fork()

write a java program that will print out the following pattern but squared. Use nested for loop 5 45 345 2345 12345 to get 25 16 25 9 16 25 4 9 16 25 1 4 9 16 25

For two languages L and L2, denote their concatenation L L2 as the set of strings obtained by concatenating strings from each of the languages L L xy x E L, y L. Prove (via a formal proof using settheoretic axioms) or disprove (via a counterexample) that (a) (4 points) If L, L2, L3 are languages, and L2 C L3 then L L2 C LL3. (b) (4 points) If

write a C program that works as the calculator which can operate with the four operations ( + - / * ) , the program should keep running and asks the user to end or continue use functions to create the calculator part .. 1- use if statements . with the upper operations 2- use functions to create the calculator part . 3- the program should keep

3. Write a LaTex technical report for the following questions. Remember to write in complete sentences and follow the guidelines for technical writing given in the Getting Started module. (a) Choose your favorite 6bit binary number and show how to convert to decimal. (b) Choose your favorite number in the range 130

Write a C program, to solve the quadratic equation a x 2 + b x + c = 0 of given coefficients a, b and c. When running the program, it prompts for the input of coefficients a,b,c as floating numbers. After inputting three floating numbers, it computes and prints out the solutions, then prompts for another round of input. Your program will quit when

write a Java program that asks the user for three numbers. The output will be the sum and average of the three numbers. Sample output (your output should look just like this for the same input): The three numbers are: 99, 99, and 99. The sum of the numbers is: 297 The average of the numbers is: 99.00

C) Write a program that will prompt the user to enter a sequence of values terminated by 0, (i.e. stop when the user enters a 0). Print the following on separate lines The average of the positive values The product of the negative values The total number of values entered Input 4.0 3.7 2.9 3.5 0

A) Write a program to prompt the user for 3 integers A, B, C. The program should print, on separate lines The number of unique values entered (1, 2 or 3) The difference between the maximum and minimum The quantity avgMin, (avg is the average of the A, B,C, Min is the minimum of A,B,C) Hint pow() Run this twice with the inputs shown (copy both

Sketch a circuit that implements function F using AND, OR, and NOT gates. F(A, B, C) ABCABCABC Problem 3. Determine if functions F and G are equivalent. F(A, B, C) A B C ABC G(A, B, C) (A C) B (a) Derive your answer using a truth table. (b) Derive your answer using Boolean algebra.

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1. Use Mathematical Induction to prove the following (0) 1 23 n(n1)(2n1) (ii) 2n for all integers n 2 10. for all integers n 21,1. Use Mathematical Induction to prove the following (0) 1 23 n(n1)(2n1) (ii) 2n for all integers n 2 10. for all integers n 21

Given the function f(x) cos(x) 0.5, use the Taylor series to compute the 2nd order approximation and the point f to find the value of f(0.25). Display your answer and the exact value of the function using 2 fprintf statements. Your output should look something like this The exact value of f(0.25) is x.xxxxx The estimated value is x.xxxxx

The knowledge of computer and network security is important in identifying the factor, planning and preventing computer and network environments. Lets say your team is responsible involve in securing the computer and network in your company, then your need to plan and prevent your computer and network from the threat and computer crime. You also

Construct the truth tables for the following expressions (x y) z x. y z. w x y z (xy) 1 a) b) c)

Write a C program called power.cpp to compute 2 for a nonnegative integer n. In this program, you have to develop a recursive function to calculate it. And also, you cant use a library in the program. For the problem, you can assume that the user always enter a correct integer number which is greater than or equal to zero. Hint Use the formula 2

(a) Explain the meaning of the terms address bus and data bus in respect of a microprocessor system making reference to memory locations, the direction of information flow and the effect of the bus width. Computer memory is usually expressed in either megabytes (Mbytes) or gigabytes (Gbytes). Calculate the address bus size required to directly

Write a C or C program using the std thread class and the fork () system call function. You will need to create 2 processes each process will create a thread and each thread adds a random value to a global variable. Firstly, create an integer global variable initialized to 0. Within the main function, create 2 subprocesses using the fork ()

(4) Use Strassens algorithm to compute the following matrix product. Show your work 7 5 (5) Show how to multiply the complex numbers a bi and c di using only three multiplications of real numbers. Recall that (abi) (cdi) (acbd)i(adbc). Hint generate the real part and the imaginary part separately. (6) Write up a proof using Guess and Check (as

Write a function named factorCount that accepts an integer (assumed to be positive) as its parameter and returns a count of its positive factors. For example, the eight factors of 24 are 1, 2, 3, 4, 6, 8, 12, and 24, so the call of factorCount(24) should return 8. Program in c++

Write a class Point that has x and y coordinates as private data. Write a constructor for the class and a toString method. Write a main() method that uses the constructor to set a Point object to x2, x 3 and uses the toString method to display the coordinates of the Point object via System.out.println(objectname)

Define a class named Student. A Student object represents a university student that, for simplicity, just has a name, ID number, and number of units earned towards graduation. Each Student object should have the following public behavior new Student (name, id) Constructor that initializes a new Student object storing the given name and ID number,

Which command will list all files that ends with .exe O a. Is .exe. O b. Is.exe. O C. None of the answers are correct. O d. Is .exe.

Which Linux command will generate ListE.txt Select one a. merge ListA.txt ListB.txt ListE.txt. O b. join ListA.txt ListB.txt ListE.txt. O c. cat ListA.txt ListB.txt ListE.txt. O d. paste ListA.txt ListB.txt ListE.txt.

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Construct PDA machines that will accept the following languages on a, b 2 Marks (a) L abn 1 Q2 Write a CFG grammar for the following languages 2 Marks L(G) abcd2 n20, m0 Q3 Explain ambiguity in the Grammar concept with an example. 1 Mark,Construct PDA machines that will accept the following languages on a, b 2 Marks (a) L abn 1 Q2 Write a CFG

1. Write a Python program to filter integers (150) into two lists (even numbers and odd numbers) (using Lambda argument) 2. Create a list and find numbers from 1 to 200, which are divisible by 29 (use for loop) 3. Create a list and find numbers from 1 to 200, which are divisible by 29 (use list comprehension) 4. Create a list to get the first 11

Discuss some terrorist tactics, targets, tradecraft and technologies, why do terrorists chose certain targets? Is it important for terrorist attacks to shock and intimidate intended victims? Are there advantages to this?

8. Let A 1, 2, 3, 4, 5, B 3,4,5,6,7, and C 2,3,5). (a) Find An B. (b) Find A U B. (c) Find A B. (d) Find An (B UC).

You connected to a switch and used the show command to find the MAC address information. Use output generated by your switch to answer the questions. S1 show interfaces vlan 1 Vlani is up, line protocol is up Hardware is EthersVI, address is 001b.0c6d.8f40 (bia 001b.0c6d.8f40) Internet address is 192.168.1.224 2. 3. MTU 1500 bytes, BW 1000000

6. Describe the operation of each of the following instructions (a) PUSH AX (c) PUSH BX 7. What is the value in AX after executing the following instructions MOV AX, C123H ROR AX, 1 MOV CL, 02 SAR AL, CL

What is the value of x after running the following code? 1 s = 'the brown fox jumped' 2 x = s[:-4:-1] A. 'dep' B. 'ped' C. 'the' D. 'eht' E. None of the above.

Define a function named getlongestwordlist (wordslist, targetletters) which takes a list of words and a string of letters as parameters and returns a list of words. For each letter in the targetletters parameter, the function finds the longest word in the parameter, wordslist, that contains that particular letter. The longest word that contains

Write a C++ code to unlock your account and then you are given three attempts to guess your pin if you guess it correctly then you can proceed. but if you fail so if you dont guess your pin correctly in those 3 attempts your account get Blocked

Write a C program that implements the Bankers Algorithm in which the banker will grant a request if it satisfies the safety algorithm outlined in Section 8.6.3.1. If a request does not leave the system in a safe state, the banker will deny it. The request function should return 0 if successful and 1 if unsuccessful. Demonstrate an order in which

Write a code that contains a matrix with the dimensions of 3 by 5 which is named MYMATA and whose elements are random number varying between zero and one. The code detects and converts the negative elements of MYMATA to positive elements. Finally, it prints out a new modified matrix named NEWMATA.

Write a scriptcode which prompts the user to enter an integer. Then, it calculates and prints the factorial of that number by using FOR loop (5p) b. WHILE loop (5p) a. C. The builtin function (5p)

Write a MATLAB code which calculates and returns the roots of the following quadratic equation. (15p) 2x 9x 9 0

5. There is a LP model (48 points) max z 7x 2x 10x3 x 2x 3x 300 3x 2x 3x3 600 (X X X3 0 (1) What are the optimal solution and value of objective function (14) (2) Write the optimal solution of dual problem according to the final table. (5) 1 (3) Please write the following vectors and matrices according to the model and final table. (5)

The character vector col records colours, chestnut, gray or pinto, of 100 horses. Which code produces a barplot of col barplot(col) O bar.plot(table(col)) barplot(col) O barplot(table(col))

Suppose that x is a numerical vector in R. Which command gives the root mean square of x O sqrt(sum(X mean(X))2length(X)) O sqrt(sum(X mean(X))) O sqrt(mean(X mean(x))2) O sqrt(mean((X mean(x))2))

A sociologist hypothesises that less than half of smokers exercise regularly. In a random sample of 85 smokers, it was found that only 32 exercised regularly. A proportion test was applied. The following R output was produced. Which of the following statements is TRUE p 0.5 n OV SE Z pnorm(Z) 1 0.01137015 There is strong evidence in favour of

Write a program to create the following pattern up to the given number n, where n 3, and n 128. 1, 1, 2, 3, 5, 8.... pls note add previous two number and generate new number For example if given number is 7 (ie. n7), then the result should be 1, 1, 2, 3, 5, 8, 13. Fo example if given number is 9 (ie. n9), then result should be 1, 1, 2, 3, 5, 8,

Consider the differential equation mu y u ku Fo cos(wt). Use Matlab to plot the amplitude of steadystate response versus frequency of driving force for several values of the dimensionless damping parameter ymk as shown in Fig. 1. RkFo 10 8 6 4 2 0 r 0.015625 r 0.1 r 0.5 2 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 wwo Fig. 1

You have an Azure web app named Contoso2023. You add a deployment slot to Contoso2023 named Slot1. You need to be able to perform a deployment slot swap with preview. What should you modify? Select only one answer. application settings for Contoso2023 general settings for Contoso2023 application settings for Contoso2023-Slot1 general settings for

Write a program to print the following shape. Using while loop. Form1 234860 35151 Start 936 10 13 16 59977 13 17 21

8 write a C program that reads the salaries for 10 worker then Read the gender (m or f) for the 10 workers Define a function max that finds the maximum salary. Define a function average that finds the average for all salary. Define function gender that finds the gender for minimum salary. I Define function called itsGender that finds the

1. What are the solutions of transition from IPv4 address to IPv6 address in the Internet 2. What are the solutions of translating between IPv4 packet and IPv6 packet

Write a Java program to create a GUI window with a label and a button. When the user clicks the button, the program should display a series up to 10 terms as follows: 1,2,4,7,11,16,22,........... The output should be displayed on the GUI window using a label. To display this output, you are required to use appropriate Java logic and other elements

Convert the following UML diagram into the Java code. Write constructor for the given class. Create an instance of the class in a main method using a Demo class. Player winnings float hand Hand drawAllowed bool 1getWinnings() float adjustWinnings(in amount float) setHand(Hand)() getHand() Hand drawAllowed() bool Player()

Write a program to calculate the following equation y. Where n, x, and k are entered by the user. (13M) n n y k1 x2 (x k) xx.

In order to carry IPv6 datagrams across a network that speaks only IPv4, what needs to be done A. B. n D. Encapsulate IPv6 datagrams within IPv4 datagrams. Nothing needs to be done. IPv6 datagrams know how to navigate an IPv4 network. Encapsulate IPv6 datagrams within UDP segments Encapsulate IPv4 datagrams within IPv6 datagrams.

Consider the following grammar exprexpr term expr term term term term factor term factor factor factor digit (expr) i) Write down the syntax directed definition for the grammar above. ii) Draw the annotated parse tree for the input 4539

In this problem we will look at a special case of matrix multiplication. Assume n is a power of 2. Let A be any real n x n matrix. Let B be a n x n matrix where every element in the matrix is a fixed constant c. W I For example, when n 2, for arbitrary w, x, y, z, and c, A and B y 2 (1) Describe a divideandconquer algorithm to compute C A x B

Write a program to implement the following flowchart. By c Mo Start Enter ints, m Enter int y zs y If z10 No m1 sm If 510 Print all variables End 51

write a code in Matlab program to draw the function (y 4e sinx 0 x5), the draw should contain title (exponential function), horizontal axis named as X and vertical axis named as Y, the colour of the line is black and the shape is star with active grid. (20 points)

Write a program that reads from the user an integer matrix with 14x14. First rotate the 1st quarter of that matrix 180, and then exchange the 2nd quarter with the 3rd quarter. After that, find how many Negative even numbers in the 4th quarter. (12M)

write a program that accepts a day, month and year then calculate the day of year corresponding to that date. (The day of year is the number of days including the current day that have elapsed since the beginning of a given year and its a number in the range 1 to 365 for ordinary years and 1 to 366 for leap years) (20 points)

Error detection is used in IP header to detect errors in a) in IPv4 header and data but in IPv6 header only b) only in IPv4 header c) in both IPv4 header and IPv6 header d) in IPv4 header and data but none in IPv6 e) only in IPv6 header but none in IPv4

The difference between an Internet address IPv4 versus an IPv6 address is: A. An IPV4 is twice as slow as the IPV6 address. B. An IPV4 was created in 2002 and IPV6 was launched in 2015. C. An IPV4 can handle 4billion addresses where an IPv6 can handle up to 1 quadrillion addresses. D. An IPV4 is ideally suited for Intranets whereas IPV6 is better

Consider the grammar A YYZ ZY Y XbBZ Ba B Ya Ya bYb X Z b Za B where A, B, X, Y and Z are nonterminal, A is the start symbol and a and b are tokens. Remember that represent the empty sequence. Y means that Y does not have to match any tokens or, equivalently, it matches an empty sequence of tokens. 1. Give a parse tree for the sequence of

a) What are supervised and unsupervised machine learning Describe each of them briefly, and for each of these types, give examples from a human agents perspective. 6 points b) What are the steps involved in a machine learning task Describe these steps in the context of a problem where the machine tries to predict whether a patient will have a

simplify the following function and implement it with a two-level NAND gate circuit F(A,B,C,D) = (A'+C'+D')(A'+C')(C'+D') SIMPLIFY THE FOLLOWING FUNCTion and implement it with a two level NOR GATE circuit. F(x,y,z) = [(x+y)(x+z)]'

Write an interactive Java program that prompts for and reads a string which contains characters that are both outside and inside a pair or pairs of nonnested parentheses, (...). For example, such a string might be for (int k 0 k

Consider the mixed IPv4IPv6 network shown below, where an IPv4 tunnel exists between IPv6 routers B and E. Suppose that IPv6 router A sends a datagram to IPv6 router F. IPv6 datagrams are shown in blue the IPv4 datagram is in red (containing the encapsulated IPv6 datagram in blue). Answer the questions below. A IPv6 (a) B IPv6v4 C IPv4 (b) D IPv4

i. Find the time and space complexity (4 marks) int a, b, x 0 for (a n2 a