What Is Virtual Address?

⟩ What is virtual address?

In virtual storage systems, virtual addresses are assigned to auxiliary storage locations. The use of virtual addresses allow those locations to be accessed as though they were part of the main storage.

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0 program TRICKY 1 var1, var2, var3 integer 2 begin 3 read ( var2 ) 4 read ( var1 ) 5 while var2 < 10 loop 6 var3 = var2 + var1 7 var2 = 4 8 var1 = var2 + 1 9 print ( var3 ) 10 if var1 = 5 then 11 print ( var1 ) 12 else 13 print ( var1+1 ) 14 endif 15 var2 = var2 + 1 16 endloop 17 write ( "Wow - that was tricky!" ) 18 write ( "But the answer is…" ) 19 write ( var2+var1 ) 20 end program TRICKY Which of the following statements about the TRICKY program MOST correctly describes any control flow anomalies in it? A. The TRICKY program contains unreachable code and an infinite loop B. The TRICKY program contains no control flow anomalies C. The TRICKY program contains unreachable code D. The TRICKY program contains a loop with multiple entry points

0 program Calculate Commission 1 total, number integer 2 commission_hi, commission_lo real 3 begin 4 read ( number ) 5 while number ≠ -1 loop 6 total = total + number 7 read ( number ) 8 endloop 9 if total > 1000 then 10 commission_hi = 100 + 0.2 * ( total - 1000 ) 11 else 12 commission_lo = 0.15 * total 13 endif 14 write ( "This salesman's commission is") 15 write ( commission_hi ) 16 end program Calculate Commission Which of the following correctly lists data flow anomalies that exist in the 'calculate commission' program? A. total line 6; commission_lo line 12; commision_hi line 15 B. commision_hi line 10; commission_lo line 12 C. number line 5; number line 6 D. total line 6; commision_hi line 10; commission_lo line 12

Which of the following is a way to use call graphs to determine integration testing requirements? A. Establishing the number of locations within the software from where a module or system is called B. Establishing the number of locations within the software from where a method or function is called C. Determining conditional and unconditional calls for performance analysis D. Detecting areas to be targeted for possible memory leaks

Which of the following statements would BEST justify the use of dynamic analysis in this situation? A. Dynamic analysis could identify memory access violations caused by a wild pointer that result in the occasional 'crashes'. B. Dynamic analysis could be used to measure response times for various functions to subsequently allow system tuning. C. Dynamic analysis could be used to generate call graphs of the system to allow targeted performance enhancement. D. Dynamic analysis could be used to determine if defects introduced by programmers failing to release allocated memory are causing the 'crashes'.

Assume you are working as a test analyst on a project where a new banking system is being developed. This system will store customer financial data, including personally identifying information, account numbers and balances and transaction history. Based on this information, which of the following topics are you most likely to need to contribute to the test plan? A. Testing data encryption B. Test data anonymization C. Coordination of distributed components D. Testing in production

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