if the single-channel transmission rate of a WDM system goes up to 2.5G or above, the phenomenon of （）will take place.
第1题：
The ONS 15216 OADM can be provisioned to add/drop one， two， or four channels via Cisco Transport Manager （CTM）.
The ONS 15216 OADM consists only of a four-channel module， and the number of ports utilized determines whether it is a one， two， or four channel OADM.
Three separate OADM modules are available for one， two， and four channels. The wavelengths to be dropped and added are programmable via Cisco Transport Manager （CTM）.
The ONS 15216 OADM consists only of a single-channel module. Two-channel and four-channel support is available by stacking the single-channel module.
The ONS 15216 OADM is available in one， two， four channels. There are 32 single-channel OADM modules， 16 two-channel OADM modules， and 8 four-channel OADM modules.
第2题：
You are the network administrator for your company. The network consists of a single Active Directory domain. All network servers run Windows Server 2003. Half of the client computers run Windows XP Professional, and the other half run Windows NT 4.0 Workstation. You install Terminal Server on three member servers named Server1, Server2, and Server3. Each server has a single Pentium III 600-Mhz CPU with 512 MB of RAM and a single-channel EIDE disk subsystem.You place all three terminal servers in an organizational unit (OU) named Terminal Server. You link a Group Policy object (GPO) to the Terminal Server OU. Several days after the installation, users report that the performance of all three terminal servers is unacceptably slow. You discover that each server has at least 50 active sessions at once. You need to improve the performance of all three terminal servers. You must achieve this goal by using theminimum amount of administrative effort, without upgrading any hardware. What should you do? （）
第3题：
You are the network administrator for TestKing. The network consists of a single Active Directory domain. All network servers run Windows Server 2003. Half of the client computers run Windows XP Professional, and the other half run Windows NT 4.0 Workstation. You install Terminal Services on three member servers named Testking1, Testking2, and Testking3. Each server has a single Pentium III 600-Mhz CPU with 512 MB of RAM and a single-channel EIDE disk subsystem. You place all three terminal servers in an organizational unit (OU) named Terminal Server. You link a Group Policy Object (GPO) to the Terminal Server OU. Several days after the installation, users report that the performance of all three terminal servers is unacceptably slow. You discover that each server has at least 50 active sessions at once. You need to improve the performance of all three terminal servers. You must achieve this goal by using the minimum amount of administrative effort, without upgrading any hardware. What should you do?（）