225.225.224.0.
225.225.240.0.
225.225.255.0.
255.255.255.224
225.225.255.240
第1题：
You have a network containing 120 routers. You must establish and maintain connectivity between the loopback interfaces of all routers. Because of the critical services using the network, you need redundancy and fast failover. Which routing protocol should you use in this scenario?（）
A. OSPF
B. RIP
C. BGP
D. static
第2题：
You have a computer that runs Windows Vista. You create a virtual private network (VPN) connection between the computer and your company’s network.You notice that while the computer is connected through the VPN connection, users on the company network can access shared folders on the computer.You need to prevent network users from accessing your shared folders when you are connected to the company’s network by using the VPN connection.What should you do?（）
A.A
B.B
C.C
D.D
第3题：
You have recently created a serializable class named Vehicle.The class is shown below:[Serializable]public class Vehicle{public string VIN;public string Make;public string Model;public string Year;}You are planning to create a custom formatter class to control the formatting of Vehicle objects when they are serialized.You need to ensure that is achieved with as little development effort as possible.What should you do?（）
A.
B.
C.
D.
第4题：
You are the network administrator setting up the IP network for a new branch office. You need at least 5 networks with 25 hosts each. You have been allocated a /24 network.Which prefix length will satisfy the given requirements?（）
第5题：
A. 255.255.255.192
B. 255.255.255.224
C. 255.255.255.240
D. 255.255.255.248
E. None of the above
第6题：
You are the network administrator setting up the IP network for a new branch office. You need at least 5 networks with 25 hosts each. You have been allocated a /24 network.Which prefix length will satisfy the given requirements?（）
A./24
B./26
C./27
D./28
第7题：
Ezonexam has a Class C network and you need ten subnets. You wish to have as many addresses available for hosts as possible. Which one of the following subnet masks should you use?
A．255.255.255.192
B．255.255.255.224
C．255.255.255.240
D．255.255.255.248
E．None of the above
第8题：
You have a class C network, and you need to design it for 5 usable subnets with each subnet handling a minimum of 18 hosts each. Which of the following network masks should you use?
A．225.225.224.0.
B．225.225.240.0.
C．225.225.255.0.
D．255.255.255.224
E．225.225.255.240
第9题：
Your network has 1，000 client computers that run Windows XP. You are planning to deploy Windows 7. You plan to use the Microsoft Deployment Toolkit Lite Touch Installation deployment method to deploy the Windows 7 image. You have the following requirements： Migrate 20 computers at a time. Ensure that you conserve network bandwidth. You need to design a deployment strategy that meets the requirements. What should you do？（）
第10题：
You work as an application developer at Certkiller .com. Certkiller .com has been contracted to develop an application for the local bank.You have been given the responsibility of creating this application and need to store each transaction record， which is identified using a complex transaction identifier，in memory. The bank informs you that the total amount of transaction records could reach 200 per day. To achieve this， you decide to utilize one of the existing collection classes in the .NET 2.0 class library. You need to ensure that you the collection class you select is the most efficient one for storing transaction records.What should you do？（）