A company is experiencing network delays. The network administrator discovers that a worker in a location far from the MDF has connected an old 10BASE-T switch with redundant links to the existing network.How could this action be responsible for the impaired network performance?（）
A. Connecting a host to the old switch has created a broadcast storm.
B. The 10BASE-T switch forced the entire network to be reduced to 10 Mbps operation.
C. The old switch does not support VLANs, which has disabled the VLAN configuration of the entire the network.
D. The old switch does not support full-duplex operation, effectively forcing half-duplex operation throughout the network.
E. Spanning Tree Protocol has elected the old switch as the root bridge, creating inefficient data paths through the switched network.
第1题：
You work as a network administrator in your company. Communication inside the company is ensured by network environments, such as GET VPN, Dynamic Multipoint VPN and Ethernet.Which PIN architecture is applicable in those environments?（）
A.Campus
B.Teleworker
C.Branch
D.Data center
第2题：
A network administrator is designing a Cisco network for a large company. The network must be able to use minimal bandwidth for routing updates, converge quickly, and support VLSM, CIDR, IP and IPX. Which routing protocol will best fit the requirements of this network?（）
第3题：
A.IDS
B.IPS
C.Firewall
D.Managed PKI
第4题：
The network administrator has discovered that the power supply has failed on a switch in the company LAN and that the switch has stopped functioning. It has been replaced with a Cisco Catalyst 2950 series switch.What must be done to ensure that this new switch becomes the root bridge on the network?（）
第5题：
An administrator is concerned about users utilizing the company's wireless signal with their personal laptops. Which of the following is the BEST method to use to prevent unauthorized devices from using the company's wireless network?（）
第6题：
A network administrator is designing a Cisco network for a large company. The network must be able to use minimal bandwidth for routing updates, converge quickly, and support VLSM, CIDR, IP and IPX. Which routing protocol will best fit the requirements of this network?（）
A. RIP v1
B. RIP v2
C. IGRP
D. OSPF
E. EIGRP
第7题：
A network administrator is planning a network installation for a large organization.The design requires 100 separate subnetworks,so the company has acquired a Class B network address.What subnet mask will provide the 100 subnetworks required, if 500 usable host addresses are required per subnet?（）
第8题：
Your computer has a wired network adapter and a wireless network adapter. You use the wireless network adapter only whe nyou are traveling. You need to configure the network adapter profile settings to ensure that the computer discovers other network devices only when you are at home.Which two actions should you perform?（）
A.A
B.B
C.C
D.D
第9题：
You are the network administrator for Company. Company’s network consists of 200 Windows 2000 Professional computers. CompanyW1 is a Windows 2000 Server computer that hosts Company’s intranet site. CompanyP1 is a computer running Microsoft Proxy Server that is used by all computers on the network to access the Internet. You discover that CompanyP1 is experiencing performance degradation due to large number of requests to authenticate with the proxy server. You want to minimize the number of authentication requests to the proxy server. What should you do on each computer？（）
第10题：
The Company network administrator needs to enable VTP pruning within the Company network. What action should a network administrator take to enable VTP pruning on an entire management domain？（）