在客票上“NOT VALID AFTER”和“NOT VALID BEFORE”是什么意思？这两行字通常出现在什么类型的客票中？
在客票上“NOT VALID AFTER”和“NOT VALID BEFORE”是什么意思？这两行字通常出现在什么类型的客票中？
相关考题：
听力原文：The signature of the payee or of his duly authorized agent is essential to the validity of an endorsement.(7)A．The payee's signature can make the endorsement valid.B．The drawer's duly authorized agent can make the endorsement valid.C．The payer's signature can make the endorsement valid.D．The drawee's duly authorized agent can make the endorsement valid.
Which view shows all valid values for the NLS_LANGUAGE, NLS_SORT, NLS_TERRITORY,and NLS_CHARACTERSET parameters?() A. V$VALID_NLS_VALUESB. NLS_VALID_VALUESC. NLS_VALUE_OPTIONSD. V$NLS_VALUE_OPTIONSE. V$NLS_VALID_VALUES
汉译英：“原产地；有效期限”，正确的翻译为（ ）。A. place of issue ； Departure time B. place of origin ； Departure timeC. place of issue ； Valid period D. place of origin ； Valid period
在将一台linux计算机配置为samba服务器时，若要共享/files目录，并只允许class组的成员可以访问，除设置public=yes外，还应指定（）。A、guest ok=noB、valid users=classC、valid users=@classD、invalid users=@class
在将一台linux计算机配置为samba服务器时，若要以只读方式共享/files目录，只有managers组（成员：mary、tony）可以访问，以下关于访问用户限制的设置正确的是（）。A、valid users=mary tonyB、write list＝mary tonyC、invalid users=mary tonyD、valid users=@managersE、valid list=mary tony
国际客票的识读：（中译英或英译中） A、FARE BASIS： B、NOT VALID BEFORE:// C、AIRLINE DATA： D、TOUR CODE:// E、填开日期与地点： F、行李： G、免费行李额： H、始发地/目的地：
客票签注栏内注明“NON-ENDORSABLE”“NON-REFUNDABLE”“VALID ON THE DAY SHOWN ONLY”的含义是（）。A、不得签转B、不得改变航程C、不得改期D、不得退票
管理站用set命令在RMON表中增加新行的过程中，其状态对象的值的变化顺序为（）。A、underCreate、createRequest、validB、createRequest、underCreate、validC、valid、createRequest、underCreateD、valid、underCreate、createRequest
Given： 6. 7.%="processing" % 8. and a custom tag handler for foo which extends TagSupport. Which two are true about thetag handler referenced by foo？（）A、The doStartTag method is called once.B、The doAfterBody method is NOT called.C、The EVAL_PAGE constant is a valid return value for the doEndTag method.D、The SKIP_PAGE constant is a valid return value for the doStartTag method.E、The EVAL_BODY_BUFFERED constant is a valid return value for the doStartTag method.
当某控件对象获得焦点后又失去焦点，将依次激发（）事件.A、When Valid GotFocus LostFocusB、When GotFocus Valid LostFocusC、Valid When GotFocus LostFocusD、Valid GotFocus When LostFocus
You suspect that a hacker may be performing a MAC address flooding attack somewhere within the network. Which description correctly describes a MAC address flooding attack？（）A、The attacking device spoofs a source MAC address of a valid host currently in the CAM table. The switch then forwards frames destined for the valid host to the attacking device.B、Frames with unique， invalid destination MAC addresses flood the switch and exhaust CAM table space. The result is that new entries cannot be inserted because of the exhausted CAM table space， and traffic is subsequently flooded out all ports.C、The attacking device crafts ARP replies intended for valid hosts. The MAC address of the attacking device then becomes the destination address found in the Layer 2 frames sent by the valid network device.D、The attacking device crafts ARP replies intended for valid hosts. The MAC address of the attacking device then becomes the source address found in the Layer 2 frames sent by the valid network device.E、The attacking device spoofs a destination MAC address of a valid host currently in the CAM table. The switch then forwards frames destined for the valid host to the attacking device.F、Frames with unique， invalid source MAC addresses flood the switch and exhaust CAM table space. The result is that new entries cannot be inserted because of the exhausted CAM table space， and traffic is subsequently flooded out all ports.G、None of the other alternatives apply
根据IBM的定义，大数据的4V特征是（）。A、Volume、Velocity、Variety、VeracityB、Valid、Velocity、Variety、VeracityC、Volume、Valid、Variety、VeracityD、Volume、Velocity、Variety、Valid
单选题You suspect that a hacker may be performing a MAC address flooding attack somewhere within the network. Which description correctly describes a MAC address flooding attack？（）AThe attacking device spoofs a source MAC address of a valid host currently in the CAM table. The switch then forwards frames destined for the valid host to the attacking device.BFrames with unique， invalid destination MAC addresses flood the switch and exhaust CAM table space. The result is that new entries cannot be inserted because of the exhausted CAM table space， and traffic is subsequently flooded out all ports.CThe attacking device crafts ARP replies intended for valid hosts. The MAC address of the attacking device then becomes the destination address found in the Layer 2 frames sent by the valid network device.DThe attacking device crafts ARP replies intended for valid hosts. The MAC address of the attacking device then becomes the source address found in the Layer 2 frames sent by the valid network device.EThe attacking device spoofs a destination MAC address of a valid host currently in the CAM table. The switch then forwards frames destined for the valid host to the attacking device.FFrames with unique， invalid source MAC addresses flood the switch and exhaust CAM table space. The result is that new entries cannot be inserted because of the exhausted CAM table space， and traffic is subsequently flooded out all ports.GNone of the other alternatives apply
多选题Which two are true about the tag handler referneed by my Tag. （）AThe do Start Tag method is called once.BThe do After Body method is NOT called.CThe EVAL_Page constant is a valid return value for the do End Tag Method.Dthe EVAL_BODY_BUFFERED constant is a valid return value for the do Start Tag method.
单选题当某控件对象获得焦点后又失去焦点，将依次激发（）事件.AWhen Valid GotFocus LostFocusBWhen GotFocus Valid LostFocusCValid When GotFocus LostFocusDValid GotFocus When LostFocus
单选题Which view shows all valid values for the NLS_LANGUAGE， NLS_SORT， NLS_TERRITORY， and NLS_CHARACTERSET parameters？（）A V$VALID_NLS_VALUESB NLS_VALID_VALUESC NLS_VALUE_OPTIONSD V$NLS_VALUE_OPTIONSE V$NLS_VALID_VALUES
单选题根据IBM的定义，大数据的4V特征是（）。AVolume、Velocity、Variety、VeracityBValid、Velocity、Variety、VeracityCVolume、Valid、Variety、VeracityDVolume、Velocity、Variety、Valid
多选题You create a table with the PERIOD FOR clause to enable the use of the Temporal Validity feature of Oracle Database 12c. Examine the table definition: Which three statements are true concerning the use of the Valid Time Temporal feature for the EMPLOYEES table?（）AThe valid time columns employee_time_start and employee_time_end are automatically created.BThe same statement may filter on both transaction time and valid temporal time by using the AS OF TIMESTAMP and PERIOD FOR clauses.CThe valid time columns are not populated by the Oracle Server automatically.DThe valid time columns are visible by default when the table is described.ESetting the session valid time using DBMS_FLASHBACK_ARCHIVE.ENABLE_AT_VALID_TIME sets the visibility for data manipulatio
单选题Which view shows all valid values for the NLS_LANGUAGE, NLS_SORT, NLS_TERRITORY,and NLS_CHARACTERSET parameters?（）AV$VALID_NLS_VALUESBNLS_VALID_VALUESCNLS_VALUE_OPTIONSDV$NLS_VALUE_OPTIONSEV$NLS_VALID_VALUES