名词解释题负反馈(negative feedback)
名词解释题
负反馈(negative feedback)
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● The usual way to ensure reliable delivery is to provide the （71） with some feedback about what is happening at the other end of the line. Typically, the protocol calls for the receiver to send back special （72） frame. bearing positive or negative （73） about the incoming frames. If the sender receives a positive acknowledgement about a frame, it knows the frame. has arrived safely. On the other hand, a negative acknowledgement means that something has gone wrong, and the frame. must be transmitted again. An additional complication comes from the possibility that hardware troubles may cause aframe. to （74） completely. In this case, the receiver will not react at all, since it has no any reason to react. It should be clear that a protocol in which the sender transmits a frame. and then waits for an acknowledgement, positive or negative, will hang forever if a frame. is ever lost due to, for example, （75） hardware.（71）A. receiverB. controllerC. senderD. customer（72）A. dataB. controlC. requestD. session（73）A. applicationB. connectionC. streamD. acknowledgement（74）A. vanishB. varyC. appearD. incline（75）A. actingB. workingC. malfunctioningD. functioning
The usual way to ensure reliable delivery is to provide the (71) with some feedback about what is happening at the other end of the line. Typically, the protocol calls for the receiver to send back special (72) flame bearing positive or negative (73) about the incoming frames. If the sender receives a positive acknowledgement about a frame, it knows the frame. has arrived safely. On the other hand, a negative acknowledgement means that' something has gone wrong, and the frame. must be transmitted again.An additional complication comes from the possibility that hardware troubles may cause a flame to (74) completely. In this case, the receiver will not react at all, since it has no any reason to react. It should be clear that a protocol in which the sender transmits a frame. and then waits for an acknowledgement, positive or negative, will hang forever if a frame. is ever lost due to, for example, (75) hardware.A．receiverB．controllerC．senderD．customer
Children who have negative relationships with their parents often develop______problems including low academic achievement，negative social relationships，and delinquency。A.domesticB.influentialC.diverseD.identical
在不设置询盘速递的情况下，客户收到询盘的发件人是（），点击回复直接生成买家email地址，同时在邮件主题和邮件正文中也有买家email地址。A、feedback@support.alibaba.comB、feedback@support.alibaba-inc.comC、feedback@alibaba.comD、feedback@alibaba-inc.com
tommy has created a sales view in his sales.nsf database. Tommy wants negative numbers in the sales number column in the view parenthesis. which one of the following should tommy do?（）A、select the parenthesis when negative value in the view properties box B、select the parenthesis when negative value in the column properties box C、use the @function @negative to set this in the column formula in the view D、use a formula to format the value in the field on the form that will be displaying in the view
Examine the parameters for your database instance: Which three statements are true about the process of automatic optimization by using cardinality feedback?（）A、The optimizer automatically changes a plan during subsequent execution of a SQL statement if there is a huge difference in optimizer estimates and execution statistics.B、The optimizer can re optimize a query only once using cardinality feedback.C、The optimizer enables monitoring for cardinality feedback after the first execution of a query.D、The optimizer does not monitor cardinality feedback if dynamic sampling and multicolumn statistics are enabled.E、After the optimizer identifies a query as a re-optimization candidate, statistics collected by thecollectors are submitted to the optimizer.
单选题What role does the teacher play at the feedback stage? _____AAssessorBInstructorCManagerDResearcher
多选题Examine the parameters for your database instance: Which three statements are true about the process of automatic optimization by using cardinality feedback?（）AThe optimizer automatically changes a plan during subsequent execution of a SQL statement if there is a huge difference in optimizer estimates and execution statistics.BThe optimizer can re optimize a query only once using cardinality feedback.CThe optimizer enables monitoring for cardinality feedback after the first execution of a query.DThe optimizer does not monitor cardinality feedback if dynamic sampling and multicolumn statistics are enabled.EAfter the optimizer identifies a query as a re-optimization candidate, statistics collected by thecollectors are submitted to the optimizer.