A、 The elements in the collection are ordered.
B、 The collection is guaranteed to be immutable.
C、 The elements in the collection are guaranteed to be unique.
D、 The elements in the collection are accessed using a unique key.
E、 The elements in the collections are guaranteed to be synchronized.
更多“ Which statement is true for the class java.util.HashSet？ （） ”相关的问题
A、a table name which has 100s of records B、a table name which has 10s of records C、a table name which has empty records D、a table name which has 1000s of records E、never use a table name
A、A.${userName} B、B.${cookie.userName} C、C.${cookie.user.name} D、D.${cookies.userName[0]}
A、It is the time period after which the undo data becomes obsolete. B、It is the time period after which the committed undo data would be transferred to a temporarytablespace. C、It is the minimum time period up to which the committed undo data would be retained if free undo spaceis available. D、It is the time period after which the undo data is transferred to the Flash Recovery Area to provide readconsistency.
A、It is the time period after which the undo data becomes obsolete. B、It is the time period after which the committed undo data would be transferred to a temporary tablespace. C、It is the minimum time period up to which the committed undo data would be retained if free undo space isavailable. D、It is the time period after which the undo data is transferred to the Flash Recovery Area to provide readconsistency.
A、A.Execute the ALTER DATABASE ARCHIVELOG statement B、B.Select ARCHIVELOG option in the database control and restart the database to apply the changes. C、C.Shut down and start the instance， and in the NOMOUNT state execute the ALTER DATABASE ARCHIVELOG statement. D、D.Shut down and start the instance， mount the database， then execute the ALTER DATABASE ARCHIVELOG statement.
A、FIFO queuing， which provides a means to hold packets while they are waiting to exit an interface B、Priority queuing， which ensures a fixed amount of bandwidth C、Custom queuing （CO）， which provides a queuing tool that services all queues， even during times of congestion D、Bandwidth queuing， which ensures a minimum amount of bandwidth E、Weighted fair queuing （WFO）， which classifies packets based on flows
A、 FIFO queuing， which provides a means to hold packets while they are waiting to exit an interface B、 Priority queuing， which ensures a fixed amount of bandwidth C、 Custom queuing （CQ）， which provides a queuing tool that services all queues， even during times of congestion D、 Bandwidth queuing， which ensures a minimum amount of bandwidth E、 Weighted fair queuing （WFQ）， which classifies packets based on flows
客服
TOP
查看正确答案
