In demand paging (virtual memory), when free physical frame number is low, the kernel will select some victim pages to be replaced. For the following page reference sequence, select the number of page faults when the LRU page replacement algorithm is used, assuming there are three physical frames available.  9, 2, 3, 6, 3, 2, 9, 2

After you completed your exam, scan your solution pages into a single PDF, name it Midterm1_Student Name (example: Midterm1_JohnSmith).  Before uploading, verify your file has all the pages you need to submit. Upload it by clicking on “Choose a File” button in “Question 1” below. You are only allowed to upload one file to a question. Then click “Submit Quiz”. You may get a warning saying that you have some unanswered questions if you do not use optional file upload sections, click OK to submit anyway. View quiz document here. Use double-sided arrow icon on the tool bar below to preview it in full screen mode. You can also download it by clicking on the downwards arrow to the right of the exam file and open it on your computer. Math4261_Fall_2024_Final exam.pdf

Write an SQL query to list all country names (sorted alphabetically) and the name of the region. Select C.name, R.name From countries C, regions R Where C. = R. region_id   C.name; 

When they occur in the atmosphere, aerosols such as dust and sulfates tend to decrease environmental temperature. 

Internet_Scale_Computing_2c Map Reduce   The context for this question is the same as the previous question. 2. Consider the following implementation of a MapReduce Application. It operates on a cluster of server nodes with the following execution model: Each worker thread executes its assigned map tasks sequentially (one map task at a time) Intermediate data from each map task is stored on the worker’s local disk Data transfer occurs for reducers to collect the intermediate data from the mapper tasks  No network cost for accessing data on the same server node Network transfer cost applies only between different server nodes All inter-server-node data transfers can occur in parallel A reduce task begins processing only after receiving all its required intermediate data. Each worker thread executes its assigned reduce tasks sequentially (one reduce task at a time) Specifications of the MapReduce Application to be run: Input data: 100GB split into 100 shards of 1GB each Number of map tasks: 100 (one per shard) Number of reduce tasks: 10 (the desired number of outputs from the Map-Reduce Application) Each map task produces 100MB of intermediate data Each reduce task gets equal of amount of intermediate data from each of the map tasks to process for generating the final output Simplifying assumptions: Ignore local disk I/O time All network paths between server nodes have same bandwidth. Parallel network transfers don’t affect each other (no bandwidth contention). All data transfers occur ONLY after ALL the map tasks have completed execution Perfect load balancing (work distributed evenly to all reduce tasks) All server nodes in a given configuration have identical performance Compare two different cluster configurations: Configuration A (High-Performance Server Nodes): 5 server nodes Processing speed: 1 minute per GB (for either map or reduce task) Network transfer speed: 2GB per minute between server nodes Configuration B (Commodity Nodes): 10 server nodes Processing speed: 1.5 minutes per GB (for either map or reduce task) Network transfer speed: 1GB per minute between server nodes   (c) Which configuration is faster in this example – configuration A (smaller number of high-performance nodes) or configuration B (larger number of commodity nodes)? 

According to the expectancy theory, the term __________ refers to how desirable each of the outcomes available from an organization is to a person.

In Maslow’s hierarchy, managers must first ensure a person’s __________ needs are fulfilled in order to have a motivated workforce.

__________ are third-party negotiators who can impose what they believe is a fair solution to a dispute that both parties are obligated to abide by.

To find candidates for positions in her technology consulting firm, Tiara networks with computer science professors and hosts informational sessions at a variety of colleges and universities. Tiara is performing

__________blank is a valuable leadership trait that allows managers to avoid acting selfishly, control their feelings, and admit when they have made a mistake.