单选题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.Th

题目
单选题
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(23)应选择()
A

reset

B

acknowledgment

C

sequence

D

synchroizer


相似考题
更多“When the system upon which a transport entity is running fai”相关问题
  • 第1题:

    When creating a Web service which requires reliable delivery of SOAP messages, which transport should be used?()

    • A、 SOAP/TCP
    • B、 SOAP/JMS
    • C、 SOAP/HTTP
    • D、 SOAP/SMTP
    • E、 SOAP/HTTPS

    正确答案:B

  • 第2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3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4题:

    When running a Windows server, which option is used with the ping command to define the number of packets transmitted?()

    • A、 -n
    • B、 -a
    • C、 -r
    • D、 -v

    正确答案:A

  • 第5题:

    A graphics card has been added and the system rebooted. When running the lsdev-Cc adapter, the graphics card is not listed in the output. Which of the following actions should be performed?()

    • A、Reboot system sing the mkdev -l command.
    • B、Install device support suing the cfgmgr -i command.
    • C、Use the SMIT console to redirect the console.
    • D、Use SMIT devices and choose the correct adapter.

    正确答案:B

  • 第6题:

    When an operator is trying to log off the system displays this message: you have running jobs?? What does this mean?()

    • A、One or more processes are running in the background, preventing log off.
    • B、One or more processes are paused, requiring operator input prior to logging off.
    • C、At least one process is running in the background and it will keep running after the operator logs off
    • D、At least one process is running in the background using nohup and it will terminate when the operator logs off

    正确答案:C

  • 第7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8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9题:

    单选题
    Which of the following is the best revision of the underlined portion of sentence 2 (reproduced below)?This is the experience that a thinker has when, after they thought about a problem long and hard, they suddenly come upon a solution in a flash when they are no longer thinking about it.
    A

    that a thinker has when, after they thought long and hard about a problem, their solution suddenly arises like a flash

    B

    that thinkers have when a solution suddenly had arisen like a flash after they were thinking long and hard about a problem

    C

    that a thinker has when, after having thought long and hard about a problem, they suddenly come upon a solution

    D

    that thinkers have when, after having thought long hard hard about a problem, they suddenly come upon a solution

    E

    that thinkers have when, thinking long and hard about a problem, they suddenly come upon a solution in a flash


    正确答案: B
    解析:
    D选项最符合逻辑且最简洁。

  • 第10题:

    单选题
    When creating a Web service which requires reliable delivery of SOAP messages, which transport should be used?()
    A

     SOAP/TCP

    B

     SOAP/JMS

    C

     SOAP/HTTP

    D

     SOAP/SMTP

    E

     SOAP/HTTPS


    正确答案: E
    解析: 暂无解析

  • 第11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12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

  • 第13题:

    The system administrator did a new install of AIX on a server about a week ago. The system was not rebooted after the installation. CDE is running on this system as is TCPIP. The system administrator has started configuring the system percompany directives. The power cable was inadvertently disconnected from the wall causing the sever to lose power. Upon reboot, the system appears to hang during log in from the console or from Xterminals. Which of the following is the most probable cause?()

    • A、It is a hardware problem caused by the power failure.
    • B、There is a network problem, most probably with name resolution.
    • C、Sine the system was never rebooted, devices are marked defined instead of available and need to be activated.
    • D、Some filesets may be marked as broken and need to be reinstalled.

    正确答案:B

  • 第14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15题:

    A company is looking to improve upon their current remote management capabilities.  Thecompany must ensure that access is removed from all systems when a user is terminated and that administrators can remotely manage a system’s BIOS.  Which of the following remote management systems would support both these requirements?()

    • A、Remote management card
    • B、Terminal services
    • C、Remote desktop
    • D、LDAP enabled IP KVM

    正确答案:D

  • 第16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17题:

    Which of the following WLM commands should be used to monitor performance on a system running wlm?()

    • A、 wlmcntrl
    • B、 wlmstat
    • C、 wlmcheck
    • D、 wlmassign

    正确答案:B

  • 第18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19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20题:

    Your production database is running in the ARCHIVELOG mode and the ARCn process is functional. You have two online redo log groups. Which three background processes would be involved when a log switch happens? ()

    • A、archival
    • B、log writer
    • C、database writer
    • D、system monitor
    • E、process monitor
    • F、change tracking writer

    正确答案:A,B,C

  • 第21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22题:

    单选题
    Which of the following WLM commands should be used to monitor performance on a system running wlm?()
    A

     wlmcntrl

    B

     wlmstat

    C

     wlmcheck

    D

     wlmassign


    正确答案: D
    解析: 暂无解析

  • 第23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24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