MAC(membrane attack complex)

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MAC(membrane attack complex)

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第1题:

有以下程序include using namespacestd;class Complex{public:Complex (doubler=0, d

有以下程序 #include <iostream> using namespace std; class Complex { public: Complex (double r=0, double i =0 :re(r) ,im (i) {} double real() const {return re;} double imag() const { return im;} Complex operator + (Complex c} const {return Complex(re+c.re, im+c.im);} privane: double re,im; }; int main { Complex a =Complex (1,1)+Complex(5); cout<<a.real()<<'+'<<a.imag() << 'i' <<endl return 0; } 程序执行后的输出结果是

A.6+6i

B.6+1i

C.1+6i

D.1+1i


正确答案:B
解析:本题考核类与对象、运算符重载。运算符“+”在类Complex中作为成员函数重载,实现两个对象的数据成员的相加。所以main函数中语句“Complexa=Complex(1,1)+Complex(5);”的作用相当于“Complexa(1+5,1);”即对象a的数据成员re的值为6,imag的值为1,所以输出为6+1i。

第2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?()

  • 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

正确答案:F

第3题:

So sudden ________ that the enemy had no time to escape.

A. did the attack B. the attack did C. was the attack D. the attack was


正确答案:C

第4题:

英译中(Translate):plasma membrane-intrinsic protein()


正确答案:质膜内在蛋白

第5题:

外周膜蛋白(peripheral membrane proteins)


正确答案:通过与膜脂的极性头部或内在膜蛋白的离子相互作用和形成氢键与膜的内、外表面弱结合的膜蛋白。膜蛋白一旦从膜上释放出来,通常都是水溶性的。

第6题:

Filtration membrane


正确答案: 即滤过膜,当血液流经血管球毛细血管时,血浆内的部分物质从毛细血管进入肾小囊腔所经过的结构称滤过膜或滤过屏障。由血管球毛细血管的有孔内皮、基膜和足细胞裂孔膜三层组成,允许分子量7万以下、直径4nm以下的物质通过,其中以带正电荷的物质易于通过。

第7题:

inner nuclear membrane (内核膜)


正确答案:内核膜面向核基质,与外核膜平行排列,其表面没有核糖体颗粒。

第8题:

有以下程序include using namespace std;class Complex{public: Complex(double r=O,

有以下程序 #include<iostream> using namespace std; class Complex { public: Complex(double r=O,double i=0):re(r),im(i){} double real() const {return re;} double imag()const {return im;} Complex operator +(Complex C) const {return Complex (re+c.re,im+c.im);} private: double re,im; }; int main() { Complex a=Complex(1,1)+Complex (5); cout<<a.real()<<'+'<<a.imag()<<'i'<<endl; retum 0; } 程序执行后的输出结果是

A.6+6i

B.6+1i

C.1+6i

D.1+1i


正确答案:B
解析:本题考核类与对象、运算符重载。运算符“+”在类Complex中作为成员函数重载,实现两个对象的数据成员的相加。所以main函数中语句“Complex a=Complex(1,1)+Complex(5);”的作用相当于“Complex a(1+5,1);”即对象a的数据成员re的值为6,imag的值为1,所以输出为6+1i。

第9题:

英译中(Translate):Photosynthetic membrane()


正确答案:光合膜

第10题:

TippingPoint IPS对应用保护的过滤器分为哪几类?()

  • A、Attack Pretection,Reconnaissance,Security Policy,Informational
  • B、Attack Pretection,Scan,Security Policy,Informational
  • C、Attack Pretection,Reconnaissance,Misuser&Abuse,Informational
  • D、Attack Pretectio,Scan,Security Policy,Misuser&Abuse

正确答案:A

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