55. The simplest way of remove deadlock from the system is to ... a. preempt a resource b. rollback c. kill one of the processes d. lock one of the processes
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| 55. | The simplest way of remove deadlock from the system is to ... |
| a. | preempt a resource |
| b. | rollback |
| c. | kill one of the processes |
| d. | lock one of the processes |
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Solved in 2 steps
- 1. Write the command(s) needed to list all processes running on your system, showing a full set of columns and pipe that output to the less command so that you can page through the list of processes. 2. Write the command(s) needed to list all processes running on your system, sorted according to memory utilization. 3. Assume that the process gedit is running. Explain the steps and commands needed to kill this process. 4. Write the command(s) needed to start Firefox with a nice value of 5. 5. Write the command(s) needed to change the niceness of Firefox to 7. 6. Write the command(s) needed to start the service sshd.A company has a policy of taking daily backup from Monday to Thursday and a weekly backup on Friday. Backups are taken at 11PM.An employee creates 20 new files (File1, File2…...File20) on Monday and save it on the file server. He comes back on Wednesday and modifies File3 and File4 and save it back. On Thursday he creates 2 more files (File21 and File22). On Friday he opens up File 5 but close it immediately without making any modification. On Friday he also accidently deleted File3, File5 and File11. Which backup strategy (Full, Incremental or Differential) will restore all his files in the shortest amount of time? Explain how.Which principle states that programs, users, and even the systems be given just enough privileges to perform their task?a) principle of least privilegeb) principle of process schedulingc) principle of operating systemd) none of the mentioned
- 40. Which of the following statements is not valid for deadlock prevention scheme? a. Number the resources uniquely and never request a lower numbered resource than the last one requested. b. Request and all required resources be allocated before execution. c. Release all resources before requesting a new resource. d. Never request a resource after releasing any resource.What happens when the "Delete" link is used from the Actions menu in Hyper-V Manager? Group of answer choices The virtual machine configuration files are removed, but the virtual disk files are left in place. The virtual machine configuration files are retained, but the virtual disk files are deleted. The virtual machine configuration files and virtual hard disks are deleted. The virtual machine is removed from the list in Hyper-V manager, but both the configuration files and disk files remain intact.Given the following ls -l output: drw-r-xr-x. 2 root accounting_grp 4096 Jan 28 19:0 accounting/ What is the access permission for the ‘accounting’ folder (directory)? Write the command to change the access permission of the accounting folder (directory), so that the owner can read and execute, and the group and everybody else (world) can only read the file.
- If a process fails, the error information is often sent to a) a new file, b) another ongoing process, c) a log file, or d) none of the above.Based on the following System log at time of system crash, answer the questions that follows: What are the recovery actions in each of the following recovery techniques? a. Deferred Update b. Immediate update (Undo/Redo)1. Create a C++ ATM program that allows one to login as an administrator and as User. This program reads from an administrator Text file(name it as you like) to allow one to login. The administrator should be able to: a. Deposit money for clientb. Register a new Client c. Change their own admin password from the default When logged in as a user(the program reads from the user Text File-Database name it as you like). The user should be able to do the following: a. Login to the systemb. Withdraw cash c. Check their account balance d. Change their own use passwords from the one they were registered with. Please Implement validation checks for usernames and passwords to enhance security and enable user to retype username or password if incorrect. =Validation also for account balance such that a user cannot withdraw more than they have in the account. The following pictures are how the programs look like but feel free to do it as you like.
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