8/7/22, 1:37 AM
Self-Quiz Unit 7: Attempt review
Started on Monday, 1 August 2022, 7:00 AM State Finished Completed on Monday, 1 August 2022, 7:01 AM Time taken 21 secs Grade 10.00 out of 10.00 (100%)
Question 1 Correct Mark 1.00 out of 1.00
Setting the dirty bit causes what action to be performed on a block: (select the best answer)
Select one: O a. It is deleted because it is no longer consistent O b. It flushes or writes the block out to the disk O c. Refreshes the data by re-reading the block O d. It cleans the cache by flushing all data from the cache
The correct answer is: It flushes or writes the block out to the disk
Question 2 Correct Mark 1.00 out of 1.00
Which of the following is NOT one of the buffer pool heuristics defined in the text : (select the best answer)
Select one: O a. FIFO O b. LIF0 O c. LRU O d. LFU
The correct answer is: LIFO
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8/7/22, 1:37 AM
Self-Quiz Unit 7: Attempt review
Question 3 Correct Mark 1.00 out of 1.00
A technique that allows a programmer to use more main memory than exists in the computer is called: (select the best answer)
Select one: Oa. Buffer cache
O b. Random access memory O c. Secondary storage O d. Virtual memory
The correct answer is: Virtual memory
Question 4 Correct Mark 1.00 out of 1.00
Internal Fragmentation refers to: (select the best answer)
Select one: O a. Space that is left empty because records do not fit evenly into a sector
O b. Space allocated to a file that is not physically adjacent on the disk drive O c. Space that is left empty because records do not fit evenly into a sector or Space allocated to a file that is not physically adjacent O d. None of the options
The correct answer is: Space that is left empty because records do not fit evenly into a sector or Space allocated to a file that is not physically adjacent
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8/7/22, 1:37 AM
Self-Quiz Unit 7: Attempt review
Question 5 Correct Mark 1.00 out of 1.00
Data is stored within the disk drive on the: (select the best answer)
Select one: O a. Spindle O b. Platter O c. Cylinder O d. Sector
The correct answer is: Platter
Question 6 Correct Mark 1.00 out of 1.00
The process of storing blocks of data in main memory after reading from disk is referred to as:
Select one: O a. Buffering O b. Hashing O c. Pooling O d. Indexing
The correct answer is: Buffering
Question 7 Correct Mark 1.00 out of 1.00
A characteristic of RAM (random access memory) is that it is persistent and is not lost when the power to a computer is turned off.
Select one: O True O False v
The correct answer is 'False'
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