Question 37 What could occur if you dereference the null pointer? O Nothing will happen, O The portions of the operating system that are currently in memory can be overwritten. O The C++ compiler will be crashed. O A portions of the operating system in memory could be copied over. O There will have stack overflow situation.
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- 3. In the StackGuard approach to solving the buffer overflow problem, the compiler inserts a canary value on the memory location before the retum address in the stack. The canary value is randomly generated. When there is a return from the function call, the compiler checks if the canary value has been overwritten or not. Do you think this approach would work? Why or why not?What is the difference between dynamic and static libraries? A. Dynamic libraries are linked when executable libraries are added to memory, and static libraries are inked alter the program is placed in the memory B. Dynamic libraries are much larger than static libraries because external programs are built in the executable file that is added to memory C. Static libraries are linked when executable libraries are added to memory, and dynamic libraries are linked after the program is placed in the memory D. Static libraries can be linked to any program at run time however, the program has to be loaded for the dynamic library code to be used8.19. The UNIX kernel will dynamically grow a process's stack in virtual memory as needed, but it will never try to shrink it. Consider the case in which a program calls a C subroutine that allocates a local array on the stack that consumes 10 K. The kernel will expand the stack segment to accommodate it. When the subroutine returns, the stack pointer is adjusted and this space could be released by the kernel, but it is not released. Explain why it would be possible to shrink the stack at this point and why the UNIX kernel does not shrink it.
- 4. Suppose we want to create a stack of names that vary in length. Why is it advantageous to store the names in separate areas of memory and then build the stack out of pointers to these names rather than allowing the stack to contain the names themselves?Computer organization and assembly language Please help me with this. I have to write line by line what each line of codes does. CODE IS BELOW: .model small .386 .stack 100h .data msg1 db 13, 10, "Enter any number --> ", "$" msg2 db "Enter an operation +,- * or / --> ",13, 10, "$" msg3 db "The Operation is --> ", "$" msg4 db "The result is --> ", "$" By_base dd 21 by_10 dd 10 ; 32 bits variable with initial value = 10 sp_counter db 0 ; 8 bits variable with initial value of zero disp_number dd 0 ; 32 bits variable with initial value = 0 disp_number2 dd 0 disp_number3 dd 0 op_type db 0 last_key dd 0 ; 32 bits variable with initial value of zero remainder db 0 .code main proc mov ax,@data;set up datasegment movds,ax mov dx,offset msg1 call display_message callm_keyin calloperation mov dx,offset msg1 calldisplay_message callm_keyin cmpop_type, "+" jnz short skip_plus callop_plus skiP_plus: cmp op_type, "-" jnz short skip_minus callop_minus…Virtual memory can be implemented with? A. Segmentation B. Segmentation with paging C.Paging D. All of the above Justify your answer with explanations
- Computer Science pls answer this questions Which of the following statements is false? Select one: O a. There is a variety of concurrent collections implemented in Java. O b. Concurrency is a subset of parallelism. Oc. Java programs can have multiple threads of execution, where each thread has its own metht call stack and program counter, allowing it to execute concurrently with other threads. This capability is called multithreading. O d. Today's multi-core computers have multiple processors that can perform tasks in parallel. O e Java makes concurrency available to you through the language and APIS. Which of the following statements is false? Select one: O a. There is a variety of concurrent collections implemented in Java. O b. Concurrency is a subset of parallelism. O. Java programs can have multiple threads of execution, where each thread has its own methe call stack and program counter, allowing it to execute concurrently with other threads. This capability is called…I need help doing problem set questions regarding concurrency..................How can one simply copy a collection of shared pointers into another array using the C++ programming language? Create a list of potential answers to the problems you've been presented with in this scenario. Is it true that when shared pointers are copied, the objects they control are likewise copied along with them? Explain
- In c++ write an assembler in which it will read a program written in HACK assembly language from an external file and ultimatley translate each line of code into the binary equivalent that can be run on the computer I built so based off the following hdl files Computer below others are in the images. CHIP Computer { IN reset; PARTS: //Read-only memory (ROM) for instruction fetch ROM32K(address=PC,out=instruction); //Central Processing Unit (CPU) for instruction executionCPU(instruction=instruction,reset=reset,inM=outMemo,outM=CPUoutM,writeM=wM,addressM=adM,pc=PC); //Memory for data storage and control logic Memory(in=CPUoutM,load=wM,address=adM,out=outMemo); }Question 1 The concept of Resource Acquisition Is Initialization (RAII) refers to: O None of these answers. O Having the destruction of acquired resources determined by the lifetime of variables on the stack. O The compiler rule that states that an object's base components must be constructed during a derived object's initialization. O The convention that variables and object should always have an initial value. O The stealing of Rvalue data to improve the performance of your code.3. Which stack protection techniques are vulnerable to return-orlented programming? a. Stack Canaries b. Address space layout randomization c. Limiting Executable Code Regions 4. In malloclab, several students implemented an optimization where small blocks would be allocated at the beglinning of a free block, and large blocks would be allocated at the end of a free block. In what way was this useful on some traces? a. It increases the memory utilization due to less Internal fragmentation. b. It increagos tho momory utlization duo to moro coaloscing opportunities. c. Itincreases the throughput due to smaller free lists. d. It increases the throughput due to better temporal locality in caches. 5. After a forki), to access which datastnuctures, should the resulting two processes synchronize? а. Неар b. Stack c. Registers d. Globals e. Program Code