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?

Select which of the following operations always require switching to Kernel Mode for execution. Handling Interrupts.  Opening a web browser. Disk I/O operations. Memory Allocation.

Which of the following are TRUE for TCP: TCP is connection less. Lost data is retransmitted. Packets may arrive out of order, but once received, are re-ordered before delivery to the receiving application. Data is delivered as datagram. Built on top of IP.  

Select True or False for the following statements. The Short Term Scheduler is responsible for maintaining memory load.  The Long Term Scheduler prevents Batch systems from being overloaded.  The Medium Term Scheduler selects which process will be allocated to the CPU. 

Identify whether each of the following layers belongs to IP, OSI, or Both: Network Layer. Access Layer. Presentation Layer. Physical Layer.  Application Layer.

Match the page eviction algorithm to the description. 1. This algorithm proceeds in a round-robin fashion. On page fault, if the current page’s reference bit is set, it is cleared and the next page is chosen, this repeats until a page whose reference bit is not set is found. That page is then evicted. 2. This algorithm uses a referenced and modified bit for each page to approximate the least recently used algorithm. 3. This algorithm tracks the number of times a page is used, evicting the least recently used page. 4. This algorithm uses a time window to define a working set of pages that are the most active. It then attempts to evict a page that is not in the working set, only evicting the oldest page if all pages are in the working set.  

Identify whether each of the following layers belongs to IP, OSI, or Both: Application Layer.  Session Layer. Data Link Layer.  Access Layer.  Transport Layer. 

Select which of the following is/are True for Spinlocks Spinlocks are a type of synchronization primitive.  Spinlocks are a form of busy-waiting.  Spinlocks are a type of mutual exclusion mechanism.  Spinlocks are suitable for scenarios where threads may need to sleep while waiting for a lock. 

A sports researcher is testing three different training programs but knows that initial fitness level affects results. Which design approach is best?

A class of 20 students took a quiz worth 10 points. The mean score was 7.5 with a standard deviation of 0.5 points. Which statement best interprets this standard deviation?