1. Consider the following snapshot of a system:AllocationRequestMarABCD ABCD0023 0001011012202356 1000A B C DP₁0 0 1 2P₂1000Pa1354PA00012201 2200Available12201.1. Is the system in a safe state?1.2. Can P3's request be safely granted immediately?1.3. If P3's request is granted immediately, does the system enter a deadlock?Show all your workings.

Step 1: 1.1 answer 1.1. To determine if the system is in a safe state, use the banker's algorithm.…

Answered: 1. Consider the following snapshot of a…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Consider a system with seven processes, A though G, and six resources, R through W. The state of which resources are currently owned and which ones are currently being requested is as follows: 1. ProcessA holds R and wants S. 2. Process B holds nothing but wants T. 3. Process C holds nothing but wants S. 4. Process D holds U and wants S and T. 5. Process E holds T and wants V. 6. Process F holds W and wants S. 7. Process G holds V and wants U. Which of the following statements is true O There is no deadlock O There is deadlock, and it involves processes D, E, and G only O There is deadlock, and it involves processes A, D, and G only O There is deadlock, and it involves processes A, D, E, F, and G only.
IF AX = 9366H; BX = 9262H; What will be the value of CF, AF, PF and ZF after the execution of ADD AX, BX?
Give downvote if plagiarized or from internet A program is run on a system with two types of machine language instructions: type A instructions each require 3 clock cycles, while type B instructions each require 1 clock cycle. If 100 million type A instructions and 400 million type B instructions are executed, what is the CPI for this program? A program is run on a system with two types of machine language instructions: type A instructions each require 3 clock cycles, while type B instructions each require 1 clock cycle. If 100 million type A instructions and 400 million type B instructions are executed, what is the CPI for this program?
From Table 1 can the request by P5 be granted immediately if it comes in the order (0, 4, 2, 0)? If yes, show any possible sequence?
Operating system.
2.a)Consider a system which indicates which part of a laptop is damaged. There are sixpossible events here: fan damaged (F-001), keyboard damaged (K-111), speaker damaged(S-010), track-pad damaged (T-101), ethernet port damaged (E-011) and USB port damaged(U-100). Here, the first letter is the input and the three bits are the output. For example, inF-001, F is the input and001is the output. To maintain priority during the occurrence ofmultiple events at the same time, the priority sequence followed isF > K > T > E > U > S.Design an encoder that can encode the events based on given priority.You have to answerthe followings: i) Derive the truth table of the priority encoder including valid bit. ii) Derive the Boolean expressions for all the outputs. b)Design a 3 bit asynchronous down counter with positive edge triggered JK Flip flops.
Operating System
question
A collection of messages uses the following symbols with the given relative frequencies: s : 3 t : 10 e : 8 a : 7 m : 1 (a) Construct the optimal Huffman code for these frequencies. (b) Encode the string test using this code. (c) Calculate the lower and upper bound of the average code length. Compare to the actual code length. Please no plagiarism
Problem 3. Given the following dataset: item 13 1 0.854780 2.940656 0.627579 2 -2.608538 3.223424 0.179739 3 2.111369 2.647818 0.977920 4 0.295153 3.180525 1.027033 0.046809 3.509254 2.799846 6. -0.229770 3.436737 0.129923 1.236500 2.656545 0.761414 -0.766021 3.075824 0.369941 -0.701157 3.049471 0.800193 10 -0.977820 3.318038 1.317061 (a) Estimate the mean of r1, 12 and r3 respectively. (b) Estimate the variance of r1, r2 and r3 respectively. (c) Estimate the 7th moment of x1, x2 and r3 respectively. (d) Based on the above information, identify an item that is most probably an outlier.
Two processes P1 and P2 as stated below are up for execution where they share a variable A that is common to both. Before either process begins execution, A is set to 6. The code mentioned below also uses a binary semaphore S that is being shared. P1 P2 int P: P11: P = A*2; P12: A =P; signal (S); int Q; P21: wait (S) P22: Q = A+1; A= Q; Before any of the processes begins its execution, S is set as 0. State all the different possible values of A after both processes finish executing.
4. Consider the CRC polynomial P=11012=X³ + X² + 1. a) In order to compute the CRC code word for the information, I=1110101102, How many bits of CRC check sum will be appended? b) In order to send the above information, I, what is the message M will be sent to a receiver with check bits(remainder)? c) If the following message, M = 110110100010 is transmitted to the receiver, what is the remainder of this message? Does it have a transmission error or not?

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