Your ISP assigned you a full class B address space. From this, you need at least 300 sub-networks that can support at least 50 hosts each. Which of the subnet masksbelow are capable of satisfying your needs?（）
A.255.255.255.0
B.255.255.255.128
C.255.255.252.0
D.255.255.255.224
E.255.255.255.192
F.255.255.248.0
第1题：
Part A
51. Directions:
You are preparing to ask for some help from your teacher, write a letter that:
1) detail what you want him or she does for you,
2) express your thanks to your teacher,
You should write about i00 words on ANSWER SHEET II. Do not sign your own name at the end of the letter. You do not need to write the address.
第2题：
Your ISP assigned you a full class B address space. From this, you need at least 300 sub-networks that can support at least 50 hosts each. Which of the subnet masksbelow are capable of satisfying your needs?（）
第3题：
You are developing a Web control. The Web control captures user address information in a Web application. You create a class named AddressControl that inherits from CompositeControl. This control consists of child controls.You need to ensure that the child controls are properly output to the browser.Developers using your control must be able to set the appropriate text for labels. In addition, they must be able to pull user address information from the associated text boxes during postback.What should you do?（）
A. Override the EnsureChildControls method of the base class. Add the child controls to the base container.
B. Override the CreateControlCollection method of the base class. Add the child controls to the ControlCollection class
C. Override the CreateChildControls method of the base class. Add the child controls to the base container.
D. Override the DataBindChildren method of the base class. Add the child controls to the ControlCollection class.
第4题：
You are developing a Web control. The Web control captures user address information in a Web application. You create a class named AddressControl that inherits from CompositeControl. This control consists of child controls. You need to ensure that the child controls are properly output to the browser. Developers using your control must be able to set the appropriate text for labels. In addition, they must be able to pull user address information from the associated text boxes during postback. What should you do? （）
第5题：
You develop a Web control. The Web control consists of labels and associated text boxes. You need to ensure that the Web control has both toolbox and visual designer support. What should you do?（）
第6题：
You are creating a Windows Forms application by using the .NET Framework 3.5.You plan to develop a custom control for the application. The control will be a composite control.Your need to derive from the class that will create the control by using the minimum amount of development effort.What should you do？（）
第7题：
Your ISP has assigned you the following IP address and subnet mask: IP address: 199.141.27.0 Subnet mask: 255.255.255.240 Which of the following addresses can be allocated to hosts on the resulting subnet?（）
第8题：
A. Add a Web Control Library project to your solution. Define a class that inherits from CompositeControl.
B. Add a Windows Control Library project to your solution. Define a class that inherits from UserControl.
C. Add a Web User Control to your project. Define a class that inherits from UserControl.
D. Add a Mobile Web User Control to your project. Define a class that inherits from MobileUserControl.
第9题：
You are creating a templated Web control for use in your Web application. You need to add the Web control to your Web application pages without compiling your control into a .dll file. What should you do?（）
第10题：
Your network contains a computer named Computer1. Computer1 is assigned an IP address of 39 / 84 192.168.1.112/26.Your companys corporate policy states that the first usable address in each subnet is allocated to the default gateway.You need to configure the default gateway for Computer1.Which address should you choose？（）