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Mark True or False for each statement below. Kernel-space threads can have threads with different states (e.g., ready, blocked). [1] Threads in a multithreaded process share code, data, and file descriptors, but have their own register information and stack. [2] User-space threads are managed by the operating system’s scheduler. [3] User-space threads can block the entire process if one thread requests a blocking operation. [4] Each process in a kernel-space multithreaded system has a separate thread table for managing threads. [5]

Mark True or False for each statement below. 1. In contiguous file allocation, files are stored in sequential order on the drive, which can lead to fragmentation issues. [1]2. Linked list allocation is efficient for random access because each block contains a pointer to the next. [2]3. File Allocation Table (FAT) is an example of chained table allocation, where the linked list of blocks is stored in memory to reduce disk access. [3]4. Indexed allocation uses an index block containing pointers to each file block, which allows more flexibility in file size than a single pointer. [4]5. Multi-level indexed allocation combines direct and indirect blocks, allowing for larger maximum file sizes compared to a single-level index. [5]

Mark True or False for each statement below. 1. Batch scheduling systems aim to maximize CPU utilization and minimize mean turn-around time. [1] 2. Shortest Job First (SJF) scheduling requires prior knowledge of the duration of each job to be optimal. [2] 3. Mean Turn-Around Time (MTT) is calculated by dividing the total turn-around time of all processes by the number of processes. [3] 4. The Crystal Ball algorithm is a practical, real-time scheduling algorithm used to optimize turn-around time. [4] 5. Priority-based scheduling assigns the highest priority to processes with the largest CPU time. [5]

Evaluate the following statements about memory and storage: The closer a type of memory is to the CPU, the faster it is but also the smaller in size. [1]  L1 cache is typically farther from the CPU than SSDs. [2]  The cost of memory typically increases the farther it is from the CPU. [3]  Strictly speaking, a kilobyte is equal to 1,000 bytes. But, sometimes, like in this course, we will use kilobytes to refer to 1024 bytes. [4]  A kibibyte is larger than 1000 bytes by 24 bytes. [5] 

Mark True or False for the Following Questions In the first generation of operating systems, computers were highly reliable and did not require frequent maintenance.[1] The Altair 8800’s Operating System implemented automated program loading.[2] Multiprogramming allows the CPU to be less idle, for example by loading a new program while another is executing.[3] During the second generation, computational systems were characterized by transistors and batch processing.[4] Real-time operating systems are optimized for user interaction and feedback rather than strict timing constraints. [5]

Mark True or False for the Following Questions 1. The term “process” and “job” are completely interchangeable and have no differences. [1]2. The first generation of operating systems (1945–1955) had no OS and required programmers to act as operators. [2]3. Multiprogramming increases CPU efficiency by ensuring that the processor is always performing useful computations rather than remaining idle. [3]4. Batch systems, introduced in the second generation of operating systems (1955–1965), allowed users to interact with the computer in real time. [4]5. The operating system serves as both a resource manager and an extended machine, simplifying the user’s interaction with the hardware. [5]

Listed below are general rules that help establish a suitable testing environment for the test taker and for the proctor. Testing environment: A desk area that is free of papers and clutter. Uniform lighting and avoidance of strong lighting (electric light or sunlit window) in the direction the camera is pointing. Test Taker No headphones or ear plugs. No cell phones, tablets, or unauthorized materials (blank scratch paper is OK) No head gear or hair that obscures the eyes. No sound from radio or TV during the exam. No other persons in the room.  Question: Which of the following situations provides the best testing environment for both the test taker and the proctor?

I will be able to wait until the last day or two before a project is due to crank it out.

When I feel that there is an error in grading, I should…

Which of the following types of assignments are to be done in groups? Mark all that apply.