survey-manager/survey-nginx/secure_html/data/tests/os3.testcentral

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os3.001&mcs&0&Y&Which one of the following best describes the purpose of an operating system?&Managing hardware and providing services to applications&Sorting large files;Managing on-line application development;Managing the tape library;&&&&a&undefined.0&&&&&1:v&&&N.
os3.002&mcs&0&Y&Which of the following IBM eServers use IRQs, I/O addresses, and DMAs as a way for the operating system to connect with the processor?&xSeries and Netfinity servers&iSeries and AS/400 servers;zSeries and S/390 servers;pSeries and RS/6000 platforms;&&&&a&undefined.0&&&&&1:v&&&N.
os3.003&mcs&0&Y&Which of the following is a false statement?&Virtual memory reduces main memory requirements per program by no more than  5 percent.&Very positive and practical results have been achieved with virtual memory environments because the 80/20 rule has proven to be reliable.;Virtual memory implementations help programmers.;&This statement is false because virtual memory reduces main storage by much more that 5 percent. &&&a&undefined.0&&&&&1:v&&&N.
os3.004&tf&0&Y&True or False? IBM eServer platforms are capable of handling concurrent transactions and providing sub-second response time, while running batch jobs to fill in any idle time.&TRUE&FALSE&&&&&undefined.0&&&&&1&&&N.
os3.005&mcs&0&Y&Which one of the following did the material in this lesson suggest was a very popular and cost-effective security measure?&Passwords changed at regular intervals&Retina scanners;Card swipes;Security guards;&&&&a&undefined.0&&&&&1:v&&&N.
os3.006&mcs&0&Y&Your CIO says, "We have a lot of technology personnel who leave to pursue other opportunities. How can I be sure someone doesn't take some of our business files with them on their way out?" Click the best security rule to apply in this situation.&Restrict file access&Create an audit trail;Issue new user IDs once a month;Institute a multiple password system;&&&&a&undefined.0&&&&&1:v&&&N.
os3.007&mcs&0&Y&What kind of services does the operating system provide to coordinate shared resources and maintain the integrity of updated resources? &Serialization services&Timer services ;Locking services;Management services;&&&&a&undefined.0&&&&&1:v&&&N.
os3.008&tf&0&Y&True or False? The AIX kernel provides the ability to share resources simultaneously among many processes or threads and users.&TRUE&FALSE&&&&&undefined.0&&&&&1&&&N.
os3.009&tf&0&Y&True or False? A computer's operating system workload can not be prioritized using preemptive multitasking.  &TRUE&FALSE&&&&&undefined.0&&&&&1&&&N.
os3.010&tf&0&Y&True or False? Virtual memory is used to optimize central storage.&TRUE&FALSE&&&&&undefined.0&&&&&1&&&N.
os3.011&mcs&0&Y&Virtual memory operating systems can keep only how much of a typical program in main memory and still meet service level objectives for the program.&20%&30%;50%;10%;&&&&a&undefined.0&&&&&1:v&&&N.
os3.012&tf&0&Y&True or False? One advantage of virtual memory is that it degrades the overall performance of the operating system. &FALSE&TRUE&The degrading of the overall performance of the operating system is a disadvantage.&&&&undefined.0&&&&&1&&&N.
os3.013&tf&0&N&True or False? <br><br>Additional memory can not do anything to help reduce or eliminate the effects of disk <br>drag and its impact on overall system performance.&FALSE&TRUE&Additional memory can help reduce or eliminate the effects of disk drag and its impact on overall system performance&&&&undefined.0&&&&&1&&&N.
os3.014&tf&0&N&True or False?<br><br> One benefit of virtual memory is that when a large portion of the system is present in <br>virtual memory, ongoing upgrades of main memory or expanded storage capacity improve <br>the overall performance?&TRUE&FALSE&&&&&undefined.0&&&&&1&&&N.
os3.015&tf&0&Y&True or False? A subsystem makes the larger processing system operate slower and less efficiently.&FALSE&TRUE&The opposite is true, the subsystem makes the larger system operate more efficiently.&&&&undefined.0&&&&&1&&&N.
os3.016&mcs&0&Y&What is the opposite of batch processing?&Transaction processing&Automatic processing;Management processing;&&&&a&undefined.0&&&&&1:v&&&N.
os3.017&tf&0&Y&True or False? Hackers pose almost no threat to zSeries and s/390&TRUE&FALSE&&&&&undefined.0&&&&&1&&&N.
os3.018&mcs&0&Y&What is the most secure server?&zSeries&iSeries;UNIX;Windows;&&&&a&undefined.0&&&&&1:v&&&N.
os3.019&mcs&0&Y&What is the most widely used security technique?&Passwords&Retina scanners;Tracking;&&&&a&undefined.0&&&&&1:v&&&N.
os3.020&esa&0&&A block of main memory is called a _____ frame.&page&&A block of main memory is called a page frame.&&&&undefined.0&&&&&1&&&N.
os3.021&esa&0&&A block of secondary memory -- ___ space --contains slots for files.&page&&A block of secondary memory -- page space --contains slots for files.&&&&undefined.0&&&&&1&&&N.
os3.022&esa&0&N&The operating system uses ______________ tables to keep track of an individual address space (task).&translation&&The operating system uses translation tables to keep track of an individual address space (task).&&&&undefined.0&&&&&1&&&N.
os3.023&esa&0&&Translation tables map virtual memory and associate entries with ____ locations in central memory and 
;auxiliary storage.&current&&Translation tables map virtual memory and associate entries with current locations in central memory and 
;auxiliary storage. Since data can be in either central memory or auxiliary storage, it's important to know 
;WHERE to look at the moment you need it.&&&&undefined.0&&&&&1&&&N.
os3.024&tf&0&&The main benefit provided by virtual storage is that a program can operate as if it had much more main 
;memory to work with than is actually the case.&TRUE&FALSE&Like the resort hotel, a virtual storage environment comes with benefits and costs. The main benefit 
;provided in our hotel analogy is that a company can operate as if it were a much larger hotel than it 
;really is.&&&&undefined.0&&&&&1&&&N.
os3.025&esa&0&&The negative impact that disk I/O has on system performance is known as _____ drag.&disk&&Even though disk devices have become faster through the years, in many transactions, disk I/O represents a 
;very high percentage of overall response time. This situation makes disk I/O an undesirable element in all 
;system performance equations, especially when paging I/O is involved.&&&&undefined.0&&&&&1&&&N.
os3.026&esa&0&&When a large portion of the system is present in virtual memory, ongoing upgrades of main memory or 
;expanded storage capacity improve the overall system _____.&performance&&When a large portion of the system is present in virtual memory, ongoing upgrades of main memory or 
;expanded storage capacity improve the overall system performance.&&&&undefined.0&&&&&1&&&N.
os3.027&esa&0&N&A page frame table keeps track of both external and ___ memory locations.&real&&A page frame table keeps track of both external and real memory locations.&&&&undefined.0&&&&&1&&&N.
os3.028&esa&0&&Virtual memory environments come with benefits and ___.&costs&&Virtual memory environments come with benefits and costs.&&&&undefined.0&&&&&1&&&N.
os3.029&esa&0&&Additional memory can help reduce or eliminate the effects of disk _____ and its impact on overall system 
;performance.&drag&&Additional memory can help reduce or eliminate the effects of disk drag and its impact on overall system 
;performance.&&&&undefined.0&&&&&1&&&N.