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单选题
Which of the following statements is TRUE concerning the po column of the vmstat command？（）
A
The sys is high when po is high.
B
The po represents the number of page steals.
C
The low values usually indicate insufficient paging space.
D
The low values usually indicate sufficient memory for the load.
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更多 “单选题Which of the following statements is TRUE concerning the po column of the vmstat command？（）A The sys is high when po is high.B The po represents the number of page steals.C The low values usually indicate insufficient paging space.D The low values usually indicate sufficient memory for the load.” 相关考题
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Evaluate the following command:Which statement is true regarding the above command?()
A. The LOB matically compressed.B. The LOB values are cached bvalues are autoy default in the buffer cache.C. The LOB values are automatically stored in encrypted mode.D. All LOB data that is identical in two or more rows in a LOB column share the same data blocks.
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Which statement is TRUE concerning equatorial tides ________．A.They occur when the Sun is at minimum declination north or southB.They occur when the Moon is at maximum declination north or southC.The difference in height between consecutive high or low tides is at a minimumD.They are used as the basis for the vulgar establishment of the port
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When monitoring a system using /usr/bin/vmstat with an interval， the metrics under page pi and page po represent which of the following phrases？（）A、 The pages to and from paging space per secondB、 The page intervals and page operations per secondC、 The page interrupts and page operations per secondD、 The page segments transferred between pi and po devices per second
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The system administrator has been getting complaints about slow performance from the server. After running vmstat the administrator notices average readings that show the free list （fre） approaching zero， as well as page-in （pi） and page-out （po） values to be high. Furthermore， the applications running are essential to daily business operations. Which of the following recommendations would provide the best overall improvement？（）A、 Increase physical diskB、 Increase number of CPU’sC、 Increase physical memoryD、 Increase number of servers
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Using output from "vmstat 2 8," which of the following options is most appropriate to consider when determining if a system is experiencing memory thrashing?（）A、 cy != 1 B、 re != 0 C、 po/fr 1/6 D、 fr/po 1/6
考题
Which of the following statements is TRUE concerning the po column of the vmstat command？（）A、 The sys is high when po is high.B、 The po represents the number of page steals.C、 The low values usually indicate insufficient paging space.D、 The low values usually indicate sufficient memory for the load.
考题
When monitoring a system using vmstat with an interval， the metrics under page po represent which of the following phrases？（） A、 The number pages over the limitB、 The pages to paging space per secondC、 The number of page operations per secondD、 The number of processes waiting for page out
考题
After running the vmstat command， which of the following would most likely cause the value in the blocked column to be unusually high？（）A、 Kernel threadB、 Too many usersC、 Memory shortageD、 Network contention
考题
When monitoring a system using vmstat with an interval， which of the following conclusions should be drawn about the metrics under page pi and page po？（）A、 The values do not include working storage.B、 The values do not include persistent storage.C、 The values include both persistent and working storage.D、 The values are not working or persistent storage.
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An AIX system administrator wants to reset the level at which the SIGDANGER signal is sent to processes so appropriate actions can be taken when paging space is running low. Which of the following commands is used to reset the level？（）A、 vmtune -wB、 svmon -wC、 schedtune -wD、 vmstat -s
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A system administrator is monitoring a system that has recently shown a decrease in performance.The administrator suspects that the system may be low on memory and may be paging excessively.Which of the following commands is best to identify a possible paging problem？（）A、iostatB、netstatC、psD、vmstat
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Which two statements are true about a bitmap index？ （）A、It is recommended for the columns that have unique values.B、It can be converted to a B-tree index by using the ALTER INDEX command.C、It has a bitmap segment for each distinct value in the key column， containing a string of bits in which each bit represents the presence or absence of a key column value.D、Updating the key column locks the whole bitmap segment that contains the bit for the key value to be updated.
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Evaluate the following command： SQL CREATE TABLE design_data （id NUMBER， doc CLOB） LOB（doc） STORE AS SECUREFILE（DEDUPLICATE）； Which statement is true regarding the above command？（） A、 The LOB values are automatically compressed.B、 The LOB values are cached by default in the buffer cache.C、 The LOB values are automatically stored in encrypted mode.D、 All LOB data that is identical in two or more rows in a LOB column share the same data blocks.
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Evaluate the following statements： CREATE TABLE purchase_orders （po_id NUMBER（4）， po_date TIMESTAMP， supplier_id NUMBER（6）， po_total NUMBER（8，2）， CONSTRAINT order_pk PRIMARY KEY（po_id）） PARTITION BY RANGE（po_date） （PARTITION Q1 VALUES LESS THAN （TO_DATE（？1-apr-2007？d-mon-yyyy？）， PARTITION Q2 VALUES LESS THAN （TO_DATE（？1-jul-2007？d-mon-yyyy？）， PARTITION Q3 VALUES LESS THAN（TO_DATE（？1-oct - 2007？d-mon-yyyy？）， PARTITION Q4 VALUES LESS THAN （TO_DATE（？1-jan-2008？d-mon-yyyy？））； CREATE TABLE purchase_order_items （po_id NUMBER（4） NOT NULL， product_id NUMBER（6） NOT NULL， unit_price NUMBER（8，2）， quantity NUMBER（8）， CONSTRAINT po_items_fk FOREIGN KEY （po_id） REFERENCES purchase_orders（po_id）） PARTITION BY REFERENCE（po_items_fk）； What are the two consequences of the above statements？（）A、 Partitions of PURCHASE_ORDER_ITEMS have system-generated names.B、 Both PURCHASE_ORDERS and PURCHASE_ORDER_ITEMS tables are created with four partitions each. C、 Partitions of the PURCHASE_ORDER_ITEMS table exist in the same tablespaces as the partitions of the PURCHASE_ORDERS table.D、 The PURCHASE_ORDER_ITEMS table inherits the partitioning key from the parent table by automatically duplicating the key columns.E、 Partition maintenance operations performed on the PURCHASE_ORDER_ITEMS table are automatically reflected in the PURCHASE_ORDERS table.
考题
单选题When monitoring a system using vmstat with an interval， which of the following conclusions should be drawn about the metrics under page pi and page po？（）A
The values do not include working storage.B
The values do not include persistent storage.C
The values include both persistent and working storage.D
The values are not working or persistent storage.
考题
单选题Which statement is TRUE concerning equatorial tides（）.A
They occur when the Sun is at minimum declination north or southB
They occur when the Moon is at maximum declination north or southC
The difference in height between consecutive high or low tides is at a minimumD
They are used as the basis for the vulgar establishment of the port
考题
单选题Using output from "vmstat 2 8," which of the following options is most appropriate to consider when determining if a system is experiencing memory thrashing?（）A
cy != 1 B
re != 0 C
po/fr 1/6 D
fr/po 1/6
考题
多选题Concerning the figure below, if a =b, which of the following statements must be true? (Indicate all such statements.)Ac=dBl and k are parallelCm and l are perpendicular
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单选题An AIX system administrator wants to reset the level at which the SIGDANGER signal is sent to processes so appropriate actions can be taken when paging space is running low. Which of the following commands is used to reset the level？（）A
vmtune -wB
svmon -wC
schedtune -wD
vmstat -s
考题
单选题After running the vmstat command， which of the following would most likely cause the value in the blocked column to be unusually high？（）A
Kernel threadB
Too many usersC
Memory shortageD
Network contention
考题
单选题When monitoring a system using /usr/bin/vmstat with an interval， the metrics under page pi and page po represent which of the following phrases？（）A
The pages to and from paging space per secondB
The page intervals and page operations per secondC
The page interrupts and page operations per secondD
The page segments transferred between pi and po devices per second
考题
单选题Which of the following statements is TRUE concerning the po column of the vmstat command？（）A
The sys is high when po is high.B
The po represents the number of page steals.C
The low values usually indicate insufficient paging space.D
The low values usually indicate sufficient memory for the load.
考题
单选题The system administrator has been getting complaints about slow performance from the server. After running vmstat the administrator notices average readings that show the free list （fre） approaching zero， as well as page-in （pi） and page-out （po） values to be high. Furthermore， the applications running are essential to daily business operations. Which of the following recommendations would provide the best overall improvement？（）A
Increase physical diskB
Increase number of CPU’sC
Increase physical memoryD
Increase number of servers
考题
单选题Which of the following statements is true concerning the cetane number of diesel fuel?（）A
The cetane number affects the amount of injection lagB
The cetane number is an indication of the fuels viscosityC
Ignition lag is reduced with fuels having a high cetane numberD
The cetane number is of little significance in the combustion process
考题
单选题Evaluate the following command： SQL CREATE TABLE design_data （id NUMBER， doc CLOB） LOB（doc） STORE AS SECUREFILE（DEDUPLICATE）； Which statement is true regarding the above command？（）A
The LOB values are automatically compressed.B
The LOB values are cached by default in the buffer cache.C
The LOB values are automatically stored in encrypted mode.D
All LOB data that is identical in two or more rows in a LOB column share the same data blocks.
考题
多选题Which two statements are true about a bitmap index？ （）AIt is recommended for the columns that have unique values.BIt can be converted to a B-tree index by using the ALTER INDEX command.CIt has a bitmap segment for each distinct value in the key column， containing a string of bits in which each bit represents the presence or absence of a key column value.DUpdating the key column locks the whole bitmap segment that contains the bit for the key value to be updated.
考题
单选题When monitoring a system using vmstat with an interval， the metrics under page po represent which of the following phrases？（）A
The number pages over the limitB
The pages to paging space per secondC
The number of page operations per secondD
The number of processes waiting for page out
考题
单选题Evaluate the following command: Which statement is true regarding the above command?（）A
The LOB matically compressed.B
The LOB values are cached bvalues are autoy default in the buffer cache.C
The LOB values are automatically stored in encrypted mode.D
All LOB data that is identical in two or more rows in a LOB column share the same data blocks.
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