To what end does Linux's repquota command serve? Explain. Where does this instruction diverge from the quota instruction?
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To what end does Linux's repquota command serve? Explain. Where does this instruction diverge from the quota instruction?
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- How do Linux capabilities enhance or restrict the permissions of binaries?1. Write a program to implement LRU page replacement algorithm 2. Write a program to implement FIFO page replacement algorithm Instruction for lab work: + Students will be allocated any one / choose anyone question to answer. + Kindly use suitable Kali Linux tools to solve these assignment problems. + You have to write the step-by-step commands to solve each problem as well as screenshots at each step. Students can work in teams + Viva will be conducted by course teachers. Students will have to share their screen with the course teacher and practically demonstrate the lab work as per the report submitted. Submit assignment on or before the deadline on Blackboard portal. Late assignment submission will not be allowed. Students should not copy and paste assignments directly from other students. Assignments will also be evaluated based on plagiarism and marks will be deducted if plagiarism found.How do functions pass arguments and return values in the X64 Linux system? Compare and contrast the use of stacks and registers in passing arguments.
- Someone has modified the utils.asm file to insert a PrintTab subprogram immediatelyafter the PrintNewLine subprogram as shown below (changes are highlighted in yellow).The programmer complains that the PrintTab command cannot be called using the "jalPrintTab" instruction. What is wrong, and how can this be fixed? Explain all theproblems in the code this programmer has written.# subprogram: PrintNewLine# author: Charles Kann# purpose: to output a new line to the user console# input: None# output: None# side effects: A new line character is printed to the# user's console.textPrintNewLine: li $v0, 4 la $a0, __PNL_newline syscall jr $raSomeone has modified the utils.asm file to insert a PrintTab subprogram immediatelyafter the PrintNewLine subprogram as shown below (changes are highlighted in yellow).The programmer complains that the PrintTab command cannot be called using the "jalPrintTab" instruction. What is wrong, and how can this be fixed? Explain all theproblems in the code this programmer has written.# subprogram: PrintNewLine# author: Charles Kann# purpose: to output a new line to the user console# input: None# output: None# side effects: A new line character is printed to the# user's console.textPrintNewLine: li $v0, 4 la $a0, __PNL_newline syscall jr $ra .data __PNL_newline: .asciiz "\n"PrintTab: li $v0, 4 la $a0, tab syscall jr $ra.data tab: .asciiz "\t"What is the correct order for converting the source code into an executable file? Answer Choices: a. Preprocessing -> Compiling -> Assembly -> Linking b. Preprocessing -> Linking -> Assembly -> Compiling c. Compiling -> Preprocessing -> Linking -> Assembly d. Compiling -> Preprocessing -> Assembly -> Linking
- The NX (“no execute”) bit can also be supported by modern CPUs. To force a CPU to avoid running the code on a file, set the NX bit to 1 on that page. Currently, the OS and paging hardware implement this maximum quantity. Keep in mind that non-X86-compliant software/hardware can be executed on an OS and hardware How about a parser who wants to enforce NX above the operating system level? The programmer inserts a nX-bit association with each memory page at the bottom (in other words, at each memory location of nX bits.) The programmer imposes a size limit of 4095 bytes for application-level data structures. each stack frame is allocated in its own page, and no stack frame is larger than a page. At a given point in time, a stack frame might look like this: |-----------------------| | | +-----------------------+ entry %esp-->| return address | +-----------------------+ new %ebp---->| saved %ebp | +-----------------------+ | buf[4] | | buf[3] | | buf[1] | | buf[0] |…a) Give an example of a one-byte instruction available in SIC/XE. b) Give one disadvantage of hashing over binary search trees for implementing symbol tables. c) In a load module, why is it better to have a checksum in each text record (T-record) instead of one checksum after all the T-records? d) What is the purpose of the super block in the Unix file system?When it says "memory leaks," what exactly are we talking about when it comes to dynamic memory allocation?
- implement a Python script that checks whether the file "tmp" exists (hint: take a look at the "os" module of Python) checks whether the file "tmp" is readable checks whether the file "tmp" is writable checks whether the file "tmp" is executableLinux: The complete path and filename for the Debian Package Management list of repositories is...Write a program that simulates a paging system using the aging algorithm. The number of page frames is a parameter. The sequence of page references should be read from a file. For a given input file, plot the number of page faults per 1000 memory references as a function of the number of page frames available. Code Solution: https://github.com/preethikandhalu/C/blob/master/aging.c Task to be done based on the above program: Describe what the code does, explaining how it accomplishes its task of implementing the aging page replacement algorithm. You must create an input file for simulating a sequence of page references. Run the program. (Fix any bugs that it may contain, first). Vary the number of page frames, keeping the sequence of page references constant. What can you infer from the results? Plot the output in an Excel graph. Explain your findings. Adjust your inputs to get meaningful outputs.