楼主 2007-04-08 19:12
270考完了，这里是关于TK和PS的错题整理！
Q：1
from: tesking v37. page 208.
You are the network administrator for TestKing. All computers at TestKing is installed with Windows XP Professional. Many of the employees occasionally work from home and connect to the company network by using PPTP virtual private network (VPN) connections.
An employee named Andrea reports that she cannot connect to the network over her new DSL connection. You confirm that the connection is configured correctly in Network Connections on her portable computer. However, when Andrea attemptsto establish a connection to the VPN server vpn1.testking.com, she receives the following error message: "Unable to establish the VPN connection. The VPN server may be unreachable or the security parameters may not be configured properly for
this connection." No other employees who use cable modems or DSL connections report similar problems. You verify that Andrea's DSL provider permits VPN traffic on its network.
Andrea needs to be able to establish a connection to the company network.
What should you do?
A. Configure Andrea's DSL modem to allow TCP port 1723 and IP protocol 47 to pass
through the connection.
B. Configure Windows Firewall on Andrea's computer to allow incoming VPN
connections.
C. Configure the VPN connection to use the IP address of the VPN server rather than the
host name of the VPN server.
D. Configure TCP/IP properties of the VPN connection to include the IP address of a
DNS server on the company network.
Answer: D
Explanation: Name resolution is big issue in VPN access. If your VPN server doesn't
setup correctly or the VPN client can't receive the VPN DNS and WINS settings,
you may setup them yourself. To do this, go to the VPN
connection>properties>TCP/IP properties>Advanced. Click DNS and WINS tabs to
assign the VPN server's DNS and WINS.
正确答案确定为A
1.因为Andrea新买的DSL，之前并没有出现过这样的问题，而其他的用户也没有问题，说明 VPN SERVER 没有问题。一定是新 DSL的设置问题。
2.而答案D是说DNS的解析问题，可是连接失败的MEESSGES是 "Unable to establish the VPN connection. The VPN server may be unreachable or the security parameters may not be configured properly for this connection." 这说明已经找到（DNS 解析）了VPN服务器，而因为某种原因无法创建连接，与DNS解析无关，所以不会是答案D。
