保护区（Protected area）
保护区（Protected area）
相关考题：
（ 13 ）如果派生类以 protected 方式继承基类，则原基类的 protected 成员和 public 成员在派生类中的访问属性分别是A ） public 和 publicB ） public 和 protectedC ） protected 和 publicD ） protected 和 protected
如果派生类以protected方式继承基类，则原基类的protected成员和public成员在派生类中的访问属性分别是A．public和publicB．public和protectedC．protected和publicD．protected和protected
在哪种派生方式中,派生类可以访问基类中的protected成员() A、public和privateB、public和protectedC、protected和privateD、仅protected
使用VC6打开考生文什夹下的工程test1_3。此工程包含一个test1_3.cpp，其中定义了类circle和column，其中column类由circle类protected派生，但两个类的定义并不完整。请按要求完成下列操作，将程序补充完整。(1)定义类circle的保护数据成员r和area，它们都是double型的数据。请在注释“//**1**”之后添加适当的语句。(2)添加类circle的无参数的构造函数，使circle对象的r默认值为0，请在汁释“//**2**”之后添加适当的语句。(3)添加派生类column构造函数的定义，传入的参数为double型的height和radius，并将具分别赋值给数擗成员h和基类的r，请在注释“//**3**”之后添加适当的语句。(4)完成派生类column的成员函数print的定义，使其以格式“r=_area=_”先输出半径r和底面积area，再以格式“h=_vol=_”输出高h和体积vol的值，请在注释“//**4**”之后添加适当的语句。输山结果如下：r=1 area=3.1416h=2 vo1=6.2832注意：除在指定的位置添加语句外，请不要改动程序中的其他语句。源程序文件test1_3.cpp清单如下：include＜iostream.h＞const double pi=3.1416;class circle{protected://**1**public://**2**circle(double radius){ r=radius;}void print(){area=r*r*pi;cout＜＜"r="＜＜r＜＜" "＜＜"area="＜＜ared＜＜endl;}};class column: protected circle{protected:double h;public://** 3 **void print(){// ** 4 **}};void main(){column col(1.0,2.0);Col.print();}
下列选项中的接口声明正确的是______。A．interface Shape{...}B．abstract private interface Shape extends Area{...}C．private interface Shape{...}D．protected privated interface;
下面叙述错误的是 ______。A．基类的protected成员在派生类中仍然是protectedB．基类的protected成员在private派生类中仍然是protected的C．基类的protected成员在private派生类中是private的D．基类的protected成员不能被派生类的对象访问
访问修饰符作用范围由大到小是( )A)private-default-protected-publicB)public-default-protected-privateC)private-protected-default-publicD)public-protected-default-private
Refer to the exhibit. Will redistribute d RIP routes from OSPF Area 2 be allowed in Area 1? () A. RIP routes will be allowed in Area 1 only if they are first redistributed into EIGRP.B. Because NSSA will discard type 7 LSAs, redistributed RIP routes will not be allowed in Area 1.C. Redistrib uted RIP routes will be allowed in Area 1 because they will be changed into type 5 LSAs in Area 0 and passed on into Area 1.D. Redistributed RIP routes will be allowed in Area 1 because they will be changed into type 7 LSAs in Area 0 and passed on into Area 1.E. Because Area 1 is an NSSA, redistributed RIP routes will not be allowed.
Refer to the diagram. Which OSPF configuration command is required to configure Area 3 a s atotally stubby area?() A. On the ABR router ospf 10 area 3 stubB. On all Area 3 routers router ospf 10 area 3 stubC. On all Area 3 routers router ospf 10 area 3 stub no - summaryD. On the ABR router ospf 10 area 3 nssaE. On the ABR rou ter ospf 10 area 3 stub no - summary
Which statement is TRUE concerning protection of double bottom tanks against excessive pressure?A.Each vent for the tank must be equal to the area of the tank filling lineB.The tanks must be protected by overflowsC.The total area of the vents or the overflow shall be at least equal to the area of the fill lineD.There must be twice as much vent area as the area of the fill line
If not attached to the nozzle, each low-velocity spray applicator on a vessel must be stowed__________.A.in a protected area on the main deckB.inside a machinery space near the entranceC.next to the fire hydrant to which the fire hose is attachedD.on a rack inside the quarters near the entrance
You want to suppress advertisement of all routes within the 200.200.0.0/16 range to your OSPFneighbors in other areas. Which configuration accomplishes this goal?（）A、[edit protocols ospf area area-id] area-range 200.200.0.0/16 discard;B、[edit protocols ospf area area-id] area-range 200.200.0.0/16 restrict;C、[edit protocols ospf area area-id] area-range 200.200.0.0/16 no-summary;D、[edit protocols ospf area area-id] area-range 200.200.0.0/16 suppress;
Object类的finalize（）方法是如何声明的（）。A、public void finalize（）B、protected int finalize（）C、C.protected void finalize（intD、protected void finalize（）throws Throwable
What is the correct virtual link configuration on an OSPF router？（）A、area 0.0.0.0{ linkneighbor-id 172.168.18.2 transit-area 0.0.2.1；}B、area 0.0.0.0{ virtual-linkneighbor-id 172.168.18.2 transit-area 0.0.2.1；}C、area 0.0.0.1{ virtual-linkneighbor-id 172.168.18.2 transit-area 0.0.2.1；}D、area 0.0.2.1{ virtual-linkneighbor-id 172.168.18.2 transit-area 0.0.0.0；}
VLAN是的（）缩写.A、virtual local area networkB、virtual long area networkC、virtual local area networkingD、virtua llong area networking
What type of protection is implemented when the DBA issues the ALTER DATABASE SET STANDBY DATABASE PROTECTED； command？（）A、The standby database is protected against write operations. B、The primary database is protected against write operations. C、The primary database is protected against data loss and data divergence. D、The standby database is protected against data loss and data divergence.
单选题What type of protection is implemented when the DBA issues the ALTER DATABASE SET STANDBY DATABASE PROTECTED； command？（）AThe standby database is protected against write operations. BThe primary database is protected against write operations. CThe primary database is protected against data loss and data divergence. DThe standby database is protected against data loss and data divergence.
单选题You want to suppress advertisement of all routes within the 200.200.0.0/16 range to your OSPFneighbors in other areas. Which configuration accomplishes this goal?（）A[edit protocols ospf area area-id] area-range 200.200.0.0/16 discard;B[edit protocols ospf area area-id] area-range 200.200.0.0/16 restrict;C[edit protocols ospf area area-id] area-range 200.200.0.0/16 no-summary;D[edit protocols ospf area area-id] area-range 200.200.0.0/16 suppress;
多选题Which two statements are true about Shared SQL Area and Private SQL Area（）AShared SQL Area will be allocated in the shared pool.BShared SQL Area will be allocated when a session starts.CShared SQL Area will be allocated in the large pool always.DPrivate SQL Area will be allocated in the Program Global Area （PGA） always.EShared SQL Area and Private SQL Area will be allocated in the PGA or large pool.FThe number of Private SQL Area allocations is dependent on the OPEN_CURSORS parameter.
单选题下面叙述错误的是（）A基类的protected成员在派生类中仍然是protected的B基类的protected成员在public派生类中仍然是protected的C基类的protected成员在private派生类中是private的D基类的protected成员不能被派生类的对象访问
单选题Which statement is TRUE concerning protection of double bottom tanks against excessive pressure? （）AEach vent for the tank must be equal to the area of the tank filling lineBThe tanks must be protected by overflowsCThe total area of the vents or the overflow shall be at least equal to the area of the fill lineDThere must be twice as much vent area as the area of the fill line
单选题If not attached to the nozzle,each low-velocity spray applicator on a vessel must be stowed（）.Ain a protected area on the main deckBinside a machinery space near the entranceCnext to the fire hydrant to which the fire hose is attachedDon a rack inside the quarters near the entrance