Select True or False for the following statements An access control matrix that consists of a large number of groups, and objects will take up more storage space than an access control list of the same number of groups, and objects.[1] A user at security level 2 using the Bell-Lapadula model can only read objects at level 2.[2] In asymmetric secret-key cryptography, the encryption key is always announced publicly.[3]

Which of the following are true of chained table allocation (e.g. FAT file system)? I. Files are allocated in fixed-sized blocks. [BL] II. All parts of the file are stored at contiguous addresses.  [CON] III. Chained table allocation (FAT) uses a table to track free disk space.[MA] IV. Uses index block entries to locate data. [IN]  

Select True or False for the following statements. The Short Term Scheduler is responsible for maintaining memory load.[1]  The Long Term Scheduler prevents Batch systems from being overloaded.[2]  The Medium Term Scheduler selects which process will be allocated to the CPU.[3] 

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.[1] 2. This algorithm uses a referenced and modified bit for each page to approximate the least recently used algorithm.[2] 3. This algorithm tracks the number of times a page is used, evicting the least recently used page.[3] 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.[4]  

Which of the following types of IO is handled by a co-processor? Memory-Mapped (MMIO).[1] Port-Mapped (PMIO).[2] Direct Memory Access (DMA).[3] Dedicated Channels.[4]

Given the following Resource Allocation Graph, identify which processes are part of a deadlock. Note: dots indicate the number of instances of a resource.   P1.[1] P2.[2] P3.[3] P4.[4]

A restaurant’s daily lunch revenue follows a normal distribution with mean $800 and standard deviation $100. Using the empirical rule, approximately what percentage of days will have revenue between $600 and $1000?

The table below shows the number of state-registered automatic weapons and the murder rate for several Northwestern states.   x 11.9 8.4 6.7 3.9 2.6 2.7 2.3 0.3 y 13.9 11 9.6 7 6.3 6.2 6.2 4   x = thousands of automatic weapons y = murders per 100,000 residents   Use the data from the table to calculate the line of best fit.

A researcher is studying whether living near a park affects physical activity levels. They collect information about daily step counts from people who live within 1 mile of a park and people who live more than 3 miles from a park. Which statement correctly identifies the components of this observational study?

A neighborhood grocery store collects data about shopping patterns. They find that 60% of customers buy fresh produce and 25% buy organic products. If these events are independent, which of the following must be true?