When the system upon which a transport entity is running fails and subsequently restarts, the(66)information of all active connections is lost. The affected connections become half-open, as the side that did not fail does not yet realize the problem.The s

题目

When the system upon which a transport entity is running fails and subsequently restarts, the(66)information of all active connections is lost. The affected connections become half-open, as the side that did not fail does not yet realize the problem.The still active side of a half-open connection can close the connection using a(67)timer. This timer measures the time the transport machine will continue to await an(68)of a transmitted segment after the segment has been retransmitted the maximum number of times. When the timer(69), the transport entity assumes that either the other transport entity or the intervening network has failed. As a result, the timer closes the connection, and signals an abnormal close to the TS user.In the event that a transport entity fails and quickly restarts, half-open connections can be terminated more quickly by the use of the RST segment. The failed side returns an RST i to every segment i that it receives. When the RST i reaches the other side, it must be checked for validity based on the(70)number i, as the RST could be in response to an old segment. If the reset is valid, the transport entity performs an abnormal termination.

A．data

B．state

C．signal

D．control

相似考题

1.Trust is typically interpreted as a subjective belief in the reliability,honesty and security of an entity on which we depend( )our welfare.In online environments we depend on a wide spectrun of things,ranging from computer hardware,software and data to people and organizations.A security solution always assumes certain entities function according to specific policies.To trust is precisely to make this sort of assumptions , hence,a trusted entity is the same as an entity that is assumed to function according to policy.A consequence of this is that a trust component of a system must work correctly in order for the security of that system to hold, meaning that when a trusted( )fails,then the sytems and applications that depend on it can( )be considered secure .An often cited articulation of this principle is："a trusted system or component is one that can break your security policy”(which happens when the trust system fails).The same applies to a trusted party such as a service provider (SP for short )that is , it must operate according to the agreed or assumed policy in order to ensure the expected level of securty and quality of services. A paradoxical conclusion to be drawn from this analysis is that security assurance may decrease when increasing the number of trusted components and parties that a service infrastructure depends on. This is because the security of an infrastructure consisting of manyTrusted components typically follows the principle of the weakest link,that is,in many situations the the overall security can only be as strong as the least reliable or least secure ofall the trusted components.We cannot avoid using trusted security components,but the fewer the better.This is important to understand when designing the identity management architectures,that is,fewer the trusted parties in an identity management model,stronger the security that can be achieved by it.The transfer of the social constructs of identity and trust into digital and computational concepts helps in designing and implementing large scale online markets and communities,and also plays an important role in the converging mobile and Internet environments.Identity management (denoted Idm hereafter) is about recognizing and verifying the correctness of identitied in online environment.Trust management becomes a component of( )whenever different parties rely on each other for identity provision and authentication.IdM and Trust management therefore depend on each other in complex ways because the correctness of the identity itself must be trusted for the quality and reliability of the corresponding entity to be trusted.IdM is also an essential concept when defining authorisation policies in personalised services.Establishing trust always has a cost , so that having complex trust requirement typically leads to high overhead in establishing the required trust.To reduce costs there will be incentives for stakeholders to “cut corners”regarding trust requirements,which could lead to inadequate security.The challenge is to design IdM systems with relatively simple trust requirements.Cryptographic mechanisms are often a core component of IdM solutions,for example,for entity and data authentication.With cryptography,it is often possible to propagate trust from where it initially exists to where it is needed .The establishment of initial( )usually takes place in the physical world,and the subsequent propagation of trust happens online,often in an automated manner.A.withB.onC.ofD.for72A.entityB.personC.componentD.thing73A.No longerB.neverC.alwaysD.often74A.SPB.IdMC.InternetD.entity75A.rustB.costC.IdMD.solution请帮忙给出每个问题的正确答案和分析，谢谢！

2.Which log contains information about service restarts, system errors, warnings, and requests to check server connectivity? ()A. Events logB. System logC. User Access logD. Admin Access log

3.Trust is typically interpreted as a subjective belief in the reliability，honesty and security of an entity on which we depend（ ）our welfare.In online environments we depend on a wide spectrun of things,ranging from computer hardware,software and data to people and organizations.A security solution always assumes certain entities function according to specific policies.To trust is precisely to make this sort of assumptions,hence,a trusted entity is the same as an entity that is assumed to function according to policy.A consequence of this is that a trust component of a system must work correctly in order for the security of that system to hold,meaning that when a trusted（ ）fails,then the sytems and applications that depend on it can（ ）be considered secure.An often cited articulation of this principle is:＂a trusted system or component is one that can break your security policy”（which happens when the trust system fails）.The same applies to a trusted party such as a service provider（SP for short）that is,it must operate according to the agreed or assumed policy in order to ensure the expected level of securty and quality of services.A paradoxical conclusion to be drawn from this analysis is that security assurance may decrease when increasing the number of trusted components and parties that a service infrastructure depends on.This is because the security of an infrastructure consisting of many. Trusted components typically follows the principle of the weakest link,that is,in many situations the the overall security can only be as strong as the least reliable or least secure of all the trusted components.We cannot avoid using trusted security components,but the fewer the better.This is important to understand when designing the identity management architectures,that is,fewer the trusted parties in an identity management model,stronger the security that can be achieved by it. The transfer of the social constructs of identity and trust into digital and computational concepts helps in designing and implementing large scale online markets and communities,and also plays an important role in the converging mobile and Internet environments.Identity management（denoted Idm hereafter）is about recognizing and verifying the correctness of identitied in online environment.Trust management becomes a component of（ ）whenever different parties rely on each other for identity provision and authentication.IdM and Trust management therefore depend on each other in complex ways because the correctness of the identity itself must be trusted for the quality and reliability of the corresponding entity to be trusted.IdM is also an essential concept when defining authorisation policies in personalised services. Establishing trust always has a cost,so that having complex trust requirement typically leads to high overhead in establishing the required trust.To reduce costs there will be incentives for stakeholders to“cut corners”regarding trust requirements,which could lead to inadequate security.The challenge is to design IdM systems with relatively simple trust requirements.Cryptographic mechanisms are often a core component of IdM solutions,for example,for entity and data authentication.With cryptography,it is often possible to propagate trust from where it initially exists to where it is needed.The establishment of initial（ ）usually takes place in the physical world,and the subsequent propagation of trust happens online,often in an automated manner. A.entity B.person C.component D.thing

4.when the system upon which a transport entity is running fails and subsequently reatarts，the（）information of all active connections is lost.the affected connections become half-open，as the side that did not fail does not yet realize the promble. The still active side of a half-open connections using a（）timer.this timer measures the time transport machine will continue to await an（）of a transmitted segment after the segment has been retransmitted the maximum number of times.when the timer（），the transport entity assumes that either the other transport entity or the intervening network has failed.as a result，the timer closes the connection，and signals an abnormal close to the TS user. In the event that a transport entity fails and quickly restart，half-open connections can be teminated more quickly by the use of the RST segment.the failed side returns an RST I to every segment I that it receives.when the RST I reaches the other side，it must be checked for validity dased on the （）number I，as the RST could be in response to an old segment .if the reset is valid，the transport entity performs an abnormal termination.A.data B.state C.signal D.control A.give-up B.abandon C.quit D.connection A.reset B.acknowledgment C.sequence D.synchroizer A.stops B.restarts C.expires D.abandons A.sequence B.acknowledgment C.connection D.message

更多“When the system upon which a transport entity is running fails and subsequently restarts, ”相关问题

  • 第1题：

    Trust is typically interpreted as a subjective belief in the reliability，honesty and security of an entity on which we depend（ ）our welfare.In online environments we depend on a wide spectrun of things,ranging from computer hardware,software and data to people and organizations.A security solution always assumes certain entities function according to specific policies.To trust is precisely to make this sort of assumptions,hence,a trusted entity is the same as an entity that is assumed to function according to policy.A consequence of this is that a trust component of a system must work correctly in order for the security of that system to hold,meaning that when a trusted（ ）fails,then the sytems and applications that depend on it can（ ）be considered secure.An often cited articulation of this principle is:＂a trusted system or component is one that can break your security policy”（which happens when the trust system fails）.The same applies to a trusted party such as a service provider（SP for short）that is,it must operate according to the agreed or assumed policy in order to ensure the expected level of securty and quality of services.A paradoxical conclusion to be drawn from this analysis is that security assurance may decrease when increasing the number of trusted components and parties that a service infrastructure depends on.This is because the security of an infrastructure consisting of many.
    Trusted components typically follows the principle of the weakest link,that is,in many situations the the overall security can only be as strong as the least reliable or least secure of all the trusted components.We cannot avoid using trusted security components,but the fewer the better.This is important to understand when designing the identity management architectures,that is,fewer the trusted parties in an identity management model,stronger the security that can be achieved by it.
    The transfer of the social constructs of identity and trust into digital and computational concepts helps in designing and implementing large scale online markets and communities,and also plays an important role in the converging mobile and Internet environments.Identity management（denoted Idm hereafter）is about recognizing and verifying the correctness of identitied in online environment.Trust management becomes a component of（ ）whenever different parties rely on each other for identity provision and authentication.IdM and Trust management therefore depend on each other in complex ways because the correctness of the identity itself must be trusted for the quality and reliability of the corresponding entity to be trusted.IdM is also an essential concept when defining authorisation policies in personalised services.
    Establishing trust always has a cost,so that having complex trust requirement typically leads to high overhead in establishing the required trust.To reduce costs there will be incentives for stakeholders to“cut corners”regarding trust requirements,which could lead to inadequate security.The challenge is to design IdM systems with relatively simple trust requirements.Cryptographic mechanisms are often a core component of IdM solutions,for example,for entity and data authentication.With cryptography,it is often possible to propagate trust from where it initially exists to where it is needed.The establishment of initial（ ）usually takes place in the physical world,and the subsequent propagation of trust happens online,often in an automated manner.

    A.SP
    B.IdM
    C.Internet
    D.entity

    答案：B
    解析：
    略

  • 第2题：

    Under which two circumstances would an RSTP bridge flush its CAM table？（）

    • A、upon a port state change
    • B、upon receiving a topology change notification
    • C、when transitioning from discarding to forwarding
    • D、when transitioning from forwarding to discarding
    • E、only when changing from listening to discarding
    • F、when CAM resources have been completely used up

    正确答案:B,C

  • 第3题：

    A customer notifies the integrator that the system keypad reports trouble at a window. Upon inspection， the customer finds the window closed and locked； the customer resets the system and it fails to correct the issue. Which of the following steps should the integrator take to resolve the issue？（）

    • A、Check that the sensor is not misaligned.
    • B、Clean the space between the sensor and the plate.
    • C、Toggle the tamper switch to reset the sensor.
    • D、Bypass the zone.

    正确答案:A

  • 第4题：

    When configuring the messaging system， which of the following are valid parameters for the file transport？ （）

    • A、File Name
    • B、Operating System
    • C、Location
    • D、Host
    • E、Mode

    正确答案:A,C,E

  • 第5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 -w
    • B、 svmon -w
    • C、 schedtune -w
    • D、 vmstat -s

    正确答案:A

  • 第6题：

    If a disk module on an XIV Storage System fails, what likely happens?（）

    • A、the system slows significantly but still runs 
    • B、the customer data is lost temporarily but can be recovered 
    • C、the system goes into Read Only mode until redundancy is restored 
    • D、the system redistributes itself and keeps running seamless to the end user 

    正确答案:D

  • 第7题：

    Which log contains information about service restarts, system errors, warnings, and requests to check server connectivity? （）

    • A、Events log
    • B、System log
    • C、User Access log
    • D、Admin Access log

    正确答案:A

  • 第8题：

    单选题
    A system administrator was able to boot a system from the AIX installation CDROM. The migration install was selected, but the process hung at 92% complete. The system administrator then rebooted the system, which subsequently hung at LED 552. Which of the following options is the most probable cause?（）
    A

    The ODM is corrupted.

    B

    There is a hardware failure.

    C

    The bosboot command failed.

    D

    Not enough space is available in the filesystems.


    正确答案： A
    解析： 暂无解析

  • 第9题：

    单选题
    Given the following code：     public class Person{ static int arr[] = new int[10]；  public static void main（String a[]） {     System.out.println（arr[1]；）     }     }  Which statement is correct？（）
    A

     When compilation some error will occur.

    B

     It is correct when compilation but will cause error when running.

    C

     The output is zero.

    D

     The output is null.


    正确答案： C
    解析：  int型数组是类对象，它在类被加载时完成初始化，在前面题目中已经有叙述，由于是原始数据类型int，其初始值为0。

  • 第10题：

    单选题
    If a disk module on an XIV Storage System fails, what likely happens?（）
    A

    the system slows significantly but still runs 

    B

    the customer data is lost temporarily but can be recovered 

    C

    the system goes into Read Only mode until redundancy is restored 

    D

    the system redistributes itself and keeps running seamless to the end user 


    正确答案： B
    解析： 暂无解析

  • 第11题：

    单选题
    Given the following code：     public class Person{     int arr[] = new int[10]；  public static void main（String a[]） {     System.out.println（arr[1]）；     }     }  Which statement is correct？（）
    A

     When compilation some error will occur.

    B

     It is correct when compilation but will cause error when running.

    C

     The output is zero.

    D

     The output is null.


    正确答案： B
    解析： 实例变量在类的一个实例构造时完成初始化，而且在类的静态方法中不能直接访问类的非静态成员而只能访问类成员（像上题中一样），类的普通方法可以访问类的所有成员和方法，而静态方法只能访问类的静态成员和方法，因为静态方法属于类，而普通方法及成员变量属于类的实例，类方法（静态方法）不能使用属于某个不确定的类的实例的方法和变量，在静态方法里面没有隐含的this，而普通方法有。

  • 第12题：

    单选题
    Which command series should be used to determine whether file paging or paging space paging is a problem when running a program from an idle system？（）
    A

     foo ； lsps -s

    B

     tprof -kx ； foo

    C

     iostat ； foo ； iostat

    D

     vmstat -s ； foo ； vmstat s


    正确答案： C
    解析： 暂无解析

  • 第13题：

    Which of the following is TRUE about the ate program？（）

    • A、When running ate for the first time it will prompt for all the required information and configure all the required devices
    • B、The program is used by cu to communicate to a remote system
    • C、The program is used for remote communications between the host and a remote system using a modem or null modem via a tty port
    • D、The program ate calls cu to communicate with the remote system

    正确答案:C

  • 第14题：

    When the system upon which a transport entity is running fails and subsequently restarts,the(21) information of all active connections is lost. The affected connections become half-open, as the side that did not fail does not yet realize the problem.The still active side of a half-open connections can close the connection using a(22)timer. This timer measures the time the transport machine will continue to await an (23) of a transmitted segment after the segment has been retransmitted the maximum number of times.When the timer (24),the transport entity assumes that either the other transport entity or the intervening network has failed. As a result, the timer closes the connection, and signals an abnormal close to the TS user. In the event that a transport entity fails and quickly restarts, half-open connections can be terminated more quickly by the use of the RST segment, the failed side returns an RST i to every segment i that it receives. When the RST i reaches the other side, it must be checked for validity based on the (25) number i, as the RST could be in response to an old segment. If the reset is valid, the transport entity performs an abnormal termination. 空白处（25）应选择（）

    • A、sequence
    • B、acknowledgment
    • C、connection
    • D、message

    正确答案:A

  • 第15题：

    Company.com complains that an outage is required when adding a new filesystem to cluster. The  System management function of HACMP （C-SPOC） functions in which manner when adding filesystems to a cluster？（）  

    • A、 Adds to all nodes with the cluster running.
    • B、 Adds to all nodes with the cluster stopped.
    • C、 Adds with the cluster running，uses "Lazy Update" to perform the logical volume synchronization.
    • D、 Adds to all nodes with the cluster running but requires the volume groups to be exported andimported after.

    正确答案:A

  • 第16题：

    A system administrator was able to boot a system from the AIX installation CDROM. The migration install was selected, but the process hung at 92% complete. The system administrator then rebooted the system, which subsequently hung at LED 552. Which of the following options is the most probable cause?（）

    • A、The ODM is corrupted.
    • B、There is a hardware failure.
    • C、The bosboot command failed.
    • D、Not enough space is available in the filesystems.

    正确答案:C

  • 第17题：

    Which command series should be used to determine whether file paging or paging space paging is a problem when running a program from an idle system？（）

    • A、 foo ； lsps -s
    • B、 tprof -kx ； foo
    • C、 iostat ； foo ； iostat
    • D、 vmstat -s ； foo ； vmstat s

    正确答案:D

  • 第18题：

    Given the following code：     public class Person{     int arr[] = new int[10]；  public static void main（String a[]） {     System.out.println（arr[1]）；     }     }  Which statement is correct？（） 

    • A、 When compilation some error will occur.
    • B、 It is correct when compilation but will cause error when running.
    • C、 The output is zero.
    • D、 The output is null.

    正确答案:A

  • 第19题：

    You have an Exchange Server 2010 Edge Transport server.You discover that e-mail delivery to an external SMTP host named Host1 fails.You need to identify which SMTP error codes occur when the delivery to Host1 fails. What should you do？（）

    • A、Run the Queue Viewer.
    • B、Enable pipeline tracing.
    • C、Run the Mail Flow Troubleshooter.
    • D、Configure the protocol logging level on the Send connector.

    正确答案:D

  • 第20题：

    单选题
    Which log contains information about service restarts, system errors, warnings, and requests to check server connectivity? （）
    A

    Events log

    B

    System log

    C

    User Access log

    D

    Admin Access log


    正确答案： B
    解析： 暂无解析

  • 第21题：

    单选题
    When a refrigeration compressor is in the ‘off’ cycle, the thermal expansion valve will（）.
    A

    always be wide open when the compressor restarts

    B

    continue to operate as if the system were in operation

    C

    remain open until evaporator pressure equalizes, then close until the compressor restarts

    D

    always be completely closed until the compressor restarts


    正确答案： B
    解析： 暂无解析

  • 第22题：

    多选题
    When configuring the messaging system， which of the following are parameters of the e-mail transport？ （）
    A

    Location

    B

    Protocol

    C

    Mode

    D

    Web Address

    E

    Host


    正确答案： B,E
    解析： 暂无解析

  • 第23题：

    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 -w

    B

     svmon -w

    C

     schedtune -w

    D

     vmstat -s


    正确答案： C
    解析： 暂无解析

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