.Name three problems that will be encountered when developers of inter- faces to local resources are required to insert calls to enable and disable privi- leges to protect against unauthorized access by mobile programs as explained in the text.
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- Delve into the concept of exokernels and their advantages. How do they differ from traditional operating systems in terms of resource management?It is critical to identify and describe two of the expected effects of virtualization on operating systems. repercussionsselect one correct answer 5 __________ a set of IEEE standards that defines the standard user andprogramming interfaces for operating systems so that developers can portprograms from one operating system to another.(a) Script;(b) Parent process;(c) Portable Operating System Interface for Computer Environments (POSIX);(d) Sharable code;(e) CPU-bound.6 _______________ is the set of rules that determines where the virtual page is loadedin the memory.(a) Replacement policy;(b) Placement policy;(c) Process policy;(d) Device policy;(e) Memory policy.7 A __________ is defined in Android as a “sequence of activities a user follows toaccomplish a goal.”(a) Intent;(b) Activity;(c) Created state;(d) Task;(e) Manifest.8 _______ is a directory created by the user within the boundaries of an existingdirectory.(a) Extension;(b) Subdirectory;(c) Sequential record organization;(d) Variable-length records;(e) Relative addresses.9 Which of the following concepts is best at preventing page faults? (a) The…
- Predict and assess two virtualization-induced OS changes.Describe the challenges and solutions related to resource management and scalability in virtualized environments. How can administrators optimize resource allocation for VMs or containers?Predict two OS modifications that virtualization may cause.
- Which of the following best describe the idea of limited direct execution? It is the virtual address space (q.v.) which provided the operating system with the greatest facility to control processes in such a way as to grant and remove access to system resource on demand. A process must be able to use the system resources of CPU, memory and I/O without having complete control over the entire system, effectively overthrowing the operating system - all while providing a mechanism for the OS to regain control from that process and grant the same privilege to another process. An operating system must be able to grant limited time to a process at which point it removes that process from the CPU and grants time to another process. The CPU must be virtualized so that processes cannot execute privileged instructions in a non-privileged context. This is done by pretenting that those instructions do not exist in the user space and only execute NOP's.Determine and then analyse two of the effects that virtualization is likely to have on operating systems in the future.Consider two Operating System (OS) adjustments that may occur in the future as a consequence of virtualization and make an effort to predict them.
- Operating Systems: In brief: (MUST NOT be more than 3 lines) 1- Define the Critical-Section Problem in operating systems and explain why it is important to address. 2- How does busy waiting impact system performance and resource utilization? 3- What is the role of a binary semaphore in achieving mutual exclusion? How does it ensure that only one process can access a shared resource at a time?13. Which of the following is not typically a benefit of dynamic linking?I. Reduction in overall program execution time.II. Reduction in overall space consumption in memory.III. Reduction in overall space consumption on disk.IV. Reduction in the cost of software updates. a. I and IV b. I only c. II and III d. IV only1. Which of the following does the principle of least privilege (PoLP) apply to? (select all that apply) a. End users b. Systems c. Networks d. Hardware 2. What is NOT a benefit of cloud computing? a. Flexibility b. Prepaid services c. Pay as you go pricing d. Scalability 3. Which term represents the nearest point to a customer? a. Domain b. Edge location c. Region d. Availability Zone e. PreviousNext 4. _________________ is the process of running multiple virtual instances on top of a physical computer system using an abstract layer. a. Containerization b. Virtualization c. Scalability d. Software Emulation 5. Which action is the customer's responsibility under the AWS shared responsibility model? a. Securing the physical infrastructure b. Patching the underlying infrastructure c. Patching the network infrastructure d. Patching Amazon EC2 instances