What is the special register on a computer that contains the address of the next instruction to execute? Stack pointer Program counter Accumulator Heap What kind of situation occurs when program behavior depends on the order of execution of multiple threads of control? TOCTOU Deadlock Hypervisor Race condition What kind of malware propagates copies of itself across a network? Worm Virus Trojan horse Logic bomb What kind of attack or exploit occurs before a control can be developed? Ambush attack Rabbit Trojan horse Zero day exploit Which of the following is an example of a countermeasure that is not effective? Black-box testing Design by contract Fuzzing Security through obscurity

What is the special register on a computer that contains the address of the next instruction to execute? Stack pointer Program counter Accumulator Heap What kind of situation occurs when program behavior depends on the order of execution of multiple threads of control? TOCTOU Deadlock Hypervisor Race condition What kind of malware propagates copies of itself across a network? Worm Virus Trojan horse Logic bomb What kind of attack or exploit occurs before a control can be developed? Ambush attack Rabbit Trojan horse Zero day exploit Which of the following is an example of a countermeasure that is not effective? Black-box testing Design by contract Fuzzing Security through obscurity

Systems Architecture

7th Edition

ISBN:9781305080195

Author:Stephen D. Burd

Publisher:Stephen D. Burd

Chapter11: Operating Systems

Section: Chapter Questions

Problem 12VE

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Similar questions

Argument transmission is a weakness in many operating systems' security systems. Both nested routines often use a similar shared stack for arguments as well as the remainder of the background of each calling method. (a) Describe the flaws that this vulnerability exposes. (b) Describe how the flaw can be mitigated. The shared stack can also be used for statement passing and background storage.
Define the cancellation of threads and the thread that will be the target of the cancellation.
Java programming language * Make the user able to perform several operations at the same time. * Each Thread that you run works separately from the rest of the commands in the program, and therefore in the event of any error occurring in the Thread, it will not affect the rest of the commands in the program, as it does not affect any other Thread running in the program. In light of your study of multiple channels, • Write a program in the Java language that demonstrates this concept - you can choose the nature of the program that you want to achieve
Solve the following problem in C programming language: Four threads will run in parallel. The threads have a shared variable x. The initial value of x is equal to 0. The critical section of Thread1 and Thread3 will increment the value of x by 1, while the critical section ofThread2 and Thread4 will decrement the value of x by 2. The program will return the final value of x which will be equal to 2.
Why is it preferable in a cooperative multithreading system for two threads to communicate with each other via the event queue rather than directly? What are some of the drawbacks of direct communication?
Do you understand the difference between a user-level thread and a kernel-level thread?
What is the purpose of a thread's stack and heap memory, and how are they managed in multithreaded programs?
Assembly Language x86: (Micro Macro): templet: .386.model flat, stdcall.stack 4096ExitProcess PROTO, dwExitCode: DWORD.data day BYTE 0month BYTE 0year WORD 0 .codemain PROC main ENDPINVOKE ExitProcess, 0END main Question: What bit string repersents April 1, 2024? Examples: Date: 00111 (year) 1100 (month) 10010 (day)00111 = 18, 1100 = 12, 10010 = 30, 1980 + 30 = 2010 = 2010 Dec 18mov ax, 00111110010010b; 2010 Dec 10; 30 12 18 DAY:mov dx, ax and dx, 0000000000011111bmov day, dl (18) ; 00111 Month: mov dx, ax and dx, 00000001111000000b shr dx, 5 ; 000000000000 1100 (12) mov month, dl Year:mov dx, axshr dx, 9 ; 011110and dx, 0000000001111111bmov year, dl (30) 10010
6. What are the different ways in which a thread can be cancelled?
Java Language : Write a program for the following: Create three child threads with the name first, second and third. Change the priority of the threads in the main thread as first with priority 3, second with priority 6 and third with priority 5. Display the name and priority of each thread in the run method. Main thread must wait until the termination of child thread. Output must be in the order of execution threads.
What is the difference between a thread running in user mode and a thread running in the kernel? Do any advantages exist that one species may have over another?
6. Initial value of shared variable m is equal to 0 and it is stored at memory address 1100. Four threads A, B, Y, Z use this variable as follows: Processes A and B increase the value of m by 1. Processes Y and Z decrease the value of m by 1. Since m is shared, each process protects the critical region using semaphore S initialized to 2. Write the sequence of operations so that after each thread is executed once, the value of m is equal to -2.3 assume the code is used S=2 Proses A A1: W(S) A2: LOAD m, 1100 A3: ADD 1 A4: MV A, 1100 A5: S(S) Proses B B1; W(S) B2: LOAD m, 1100 83: SUBT 1 B4: MV A, 1100 85: S(S) Proses Y Y1: W(S) Y2: LOAD m, 1100 Y3: ADD 1 Y4: MV A, 1100 Y5: S(S) Proses 2 21: W(S) 22: LOAD m, 1100 23: SUBT 1 24: MV A, 1100 25: S(S)