Which two commands allow you to return to a previous verision of software on the device?()A. request sytem software addB. request sytem software downgradeC. request sytem software replaceD. request sytem software rollback

题目
Which two commands allow you to return to a previous verision of software on the device?()

A. request sytem software add

B. request sytem software downgrade

C. request sytem software replace

D. request sytem software rollback

相似考题

1.有如下程序：#includeusing namespace std;class ONE{public:virtual void f(){cout<<"l";}};class TWO:public ONE{public:TWO(){cout<<"2";}};class THREE:public TWO{public:virtual void f(){TWO::f(); cout<<"3";}};int main(){ONE aa, *p;TWO bb;THREE cc;p = &cc;p->f();return 0;}执行上面程序的输出是 【 11 】 。

2.28______A. presentB. firstC. recentD. previous

3.有如下程序: include using namespace std; class ONE { public: virtual void f() {有如下程序：include ＜iostream＞using namespace std;class ONE{public:virtual void f() { cout ＜＜ "1"; }};class TWO: public ONE{public:TWO() { cout ＜＜ "2"; }};class THREE: public TWO{public:virtual void f() {TWO::f(); cout ＜＜ "3"; }};int main(){ONE aa, *p;TWO bb;THREE cc;p=&cc;P-＞f();return 0;}执行上面程序的输出是【 】。

4.有如下程序: include using namespaee std; class ONE{ public: virtual void f有如下程序：include ＜iostream＞using namespaee std；class ONE{public：virtual void f( ){cout＜＜"1"；}}；class TWO：public ONE{public：TWO( )1 cout＜＜"2"；}{；class THREE：public TWO{public：virtual void f( )}TWO::f( )；cout＜＜"3"；}}；int main( ){ONE aa，*P；TWO bb；THREE cc；P=&cc；p-＞f( )；return 0；}程序的输出结果是______。

更多“Which two commands allow you to return to a previous verision of software on the device?() ”相关问题

  • 第1题：

    publicclassDrinkimplementsComparable{publicStringname；publicintcompareTo（Objecto）{return0；}}and：Drinkone=newDrink（）；Drinktwo=newDrink（）；one.name=Coffee”；two.name=Tea”；TreeSetset=newTreeSet（）；set.add（one）；set.add（two）；AprogrammeriteratesovertheTreeSetandprintsthenameofeachDrinkobject.Whatistheresult？（）

    A.Tea

    B.Coffee

    C.CoffeeTea

    D.Compilationfails.

    E.Thecoderunswithnooutput.

    F.Anexceptionisthrownatruntime.


    参考答案：B

  • 第2题：

    To enable the Database Smart Flash Cache, you configure the following parameters:DB_FLASH_CACHE_FILE = ‘/dev/flash_device_1’ , ‘/dev/flash_device_2’DB_FLASH_CACHE_SIZE=64GWhat is the result when you start up the database instance?（）

    A. It results in an error because these parameter settings are invalid.

    B. One 64G flash cache file will be used.

    C. Two 64G flash cache files will be used.

    D. Two 32G flash cache files will be used.


    参考答案：B

  • 第3题：

    【填空题】运行下列程序,输出结果是____。 #include ＜iostream＞ using namespace std; enum opt{ONE,TWO,THREE,FOUR,FIVE,SIX,SEVEN}op; int main（void) { cout＜＜ONE; cout＜＜TWO; cout＜＜SIX; return 0; }


    B 解析：本题考查循环辅助控制语句break和continue，前者退出整个for循环，后者跳过本次循环没有执行完的若干条语句，开始下一次循环操作，建议读者采用本书推荐的列表法分析。

  • 第4题：

    YouaremanaginganOracleDatabase11gdatabaserunninginARCHIVELOGmode.TheFlashRecoveryAreaisspecifiedasthedestinationforthearchivedredologfiles.Younoticethiswarninginthealertlogfile：ORA-19815：WARNING：db_recovery_file_dest_sizeof3221225472bytesis100.00%used，andhas0remainingbytesavailable.WhatwouldyoudotoreclaimtheusedspaceintheFlashRecoveryArea（）

    A.BackuptheFlashRecoveryArea.

    B.Decreasetheretentiontimeforthedatabasebackupandflashbacklogfiles.

    C.ManuallydeleteallthearchivedlogfilesfromtheFlashRecoveryAreabyusingoperatingsystem（OS）commands.

    D.ManuallydeletealltheexpiredbackupsetsfromtheFlashRecoveryAreabyusingoperatingsystem（OS）commands.


    参考答案：A, B

  • 第5题：

    有下列程序段:include using namespace std;int main() { char b[]= "Hello,you"; b[

    有下列程序段: #include ＜iostream＞ using namespace std; int main() { char b[] = "Hello,you"; b[5] = 0; cout＜＜b＜＜end1; return 0; } 执行此程序后，得到的输出结果是( )。

    A．Hello,you

    B．Hello0you

    C．Hello

    D．0


    正确答案：C
    解析：本题考核字符数组的特性。本题表面上看起来很简单，其实不然，出题者在题中隐藏了一个陷阱。常见的错误答案是：字符数组b初始化后，得b[5]=''，执行“b[5]=0；”后，把0代替b[5]中的'，'即可。最后输出整个字符串“Hello0you”。下面是正确解答：在C++语言中规定：以字符’0’作为字符串结束标志。语句“b[5]=0；”就相当于语句b[5]='\0'，即在数组b的b[5]加上了字符串结束标志，故执行该语句后，数组中存放的内容变为Hello。

  • 第6题：

    【填空题】写出下面程序执行后的运行结果: #include＜iostream＞ using namespace std; int main____ { char a[30]="nice to meet you!"; strcpy____/2,"you"); cout＜＜a＜＜endl; return 0; }


    a=1,b=111

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