PE1 has connections to VPN sites that are served by three remote PE routers. How many LSP’s must be established to support 2547bis？（）A、an LSP for each local CE deviceB、an LSP for each remote PE deviceC、an LSP for each remote CE deviceD、an LSP for each CE 

第1题：

第2题：

在IS-IS协议中（）用于识别一个LSP的新旧。

• A、LSP序列号
• B、LSP剩余生存时间
• C、LSP ID
• D、LSP的Source ID

正确答案:A

第3题：

What is the role of Forwarding Equivalence Class （FEC） in MPLS？（）

• A、FEC determines how IP packets are forwarded in MPLS LSP.
• B、FEC determines how to establish an LSP path.
• C、FEC determines how a group of IP packets are mapped to an LSP.
• D、FEC determines how MPLS labels are stacked in LSP.
• E、None of above.

正确答案:C

第4题：

PE1 has connections to VPN sites that are served by three remote PE routers. How many LSPs must be established to support 2547bis?（）

• A、an LSP for each local CE device
• B、an LSP for each remote PE device
• C、an LSP for each remote CE device
• D、an LSP for each CE facing interface

正确答案:B

第5题：

在NE80E上配置MPLS时选择建立LSP的触发策略的命令是？（）

• A、系统视图下：mpls lsp-trigger
• B、MPLS视图下：mpls lsp-trigger
• C、系统视图下：lsp-trigger
• D、MPLS视图下：lsp-trigger

正确答案:D

第6题：

Bypass LSP不能同时是主LSP，LSP不能被嵌套保护。

正确答案:正确

第7题：

At a minimum how many NICs must a machine have to host virtual machines？（）

• A、 One NIC will support all virtual machines
• B、 One for each virtual machine and one for management
• C、 Three for each virtual machine
• D、 Two for each virtual machine and one for management

正确答案:A

第8题：

There are three routers on a Gigabit Ethernet LAN: Router A, Router B, and Router C. Router A is the Designated Intermediate System (DIS) at Level 1 for that LAN. Router A's DIS priority is 64. The LAN is a Level 1-only link. Router D has just been powered up on that same LAN and its DIS priority is 80. Which statement is true?（）

• A、Router A remains the DIS and generates a new pseudonode LSP for that LAN
• B、Router A remains the DIS and NO new pseudonode LSP is generated for that LAN
• C、Router D becomes the new DIS, generates a new pseudonode LSP for that LAN, and purges the old pseudonode LSP generated by Router A
• D、Router D becomes the new DIS, does NOT generate a new pseudonode LSP for that LAN, and does NOT purge the old pseudonode LSP generated by Router A

正确答案:C

第9题：

You are the systems engineer for your company. The network consists of a single Active Directory domain. The company has a main office and two branch offices. All servers run Windows Server 2003. All client computers run either Windows XP Professional or Windows 2000 Professional.   Each branch office maintains a dedicated 256-Kbps connection to the main office. Each office also maintains a T1 connection to the Internet. Each office has a Microsoft Internet Security and Acceleration （ISA） Server 2000 computer， which provides firewall and proxy services on the Internet connection. Each branch office contains one domain controller and five servers that are not domain controllers. There is minimal administrative staff at the branch offices.  A new company policy states that all servers must now be remotely administered by administrators in the main office. The policy states that all remote administration connections must be authenticated by the domain and that all traffic must be encrypted. The policy also states that the remote administration traffic must never be carried in clear text across the Internet.   You choose to implement remote administration by enabling Remote Desktop connections on all servers on the network. You decide to use the Internet-connected T1 lines for remote administration connectivity between offices.   Because administrative tasks might require simultaneous connections to multiple servers across the network， you need to ensure that administrators do not lose connections to servers in one office when they attempt to connect to servers in another office.   What should you do？ （）

• A、 Configure Routing and Remote Access on one server in each branch office. Create L2TP/IPSec VPN ports on these servers. Create new VPN connections on the administrators’ computers to connect to the VPN servers in the branch offices.
• B、 Configure a VPN server in each branch office. Create connections that use IPSec Authentication Header （AH） in tunnel mode from the main office connect to VPN servers in the branch offices.
• C、 Configure a local L2TP/IPSec VPN connection on the ISA Server 2000 firewall computer in the main office. Configure the ISA Server 2000 firewall computers at the branch offices as remote L2TP/IPSec VPN servers.
• D、 Configure a local PPTP VPN connection on the ISA Server 2000 firewall computers in each branch office. Configure the ISA Server 2000 firewall computer at the main office as a remote PPTP VPN server.

正确答案:C

第10题：

第11题：

第12题：

第13题：

以下关于MP说法正确的是（）。

• A、MP是Detour LSP或Bypass LSP的头节点
• B、MP是Detour LSP或Bypass LSP的尾节点
• C、MP必须在主LSP路径上
• D、MP可以是主LSP的头节点

正确答案:B,C

第14题：

Which statement about VPLS is true？（）

• A、All CE devices emulate a bridge
• B、All provider devices emulate a bridge
• C、Hierarchical VPLS reduces signaling overhead
• D、Each PE device emulates a bridge
• E、Each CE device emulates a bridge

正确答案:C

第15题：

Which two steps are required for a Kompella Layer 2 VPN?（）

• A、Configure a site id for each ce.
• B、Configure a VPN label for each VPN.
• C、Configure a MP-bgp session to each pe.
• D、Configure an Extended LDP Session to each pe.

正确答案:A,C

第16题：

What does the LSP Holdtime field in an IS-IS database indicate?（）

• A、the LSP age
• B、the LSP refresh interval
• C、the LSP elapsed lifetime
• D、the LSP remaining lifetime

正确答案:D

第17题：

Which condition must be met to allow a PE router to forward VPN traffic across a LSP in a Layer 3 VPN environment？（）

• A、The BGP next hop must be in inet.1.
• B、The BGP next hop must be in inet.3.
• C、Must have a bidirectional LSP configured.
• D、Must have a static route to allow an RP for connected interfaces.

正确答案:B

第18题：

保护倒换1：1模式下，1条备LSP为1条主LSP提供保护。在链路状态正常的情况下备LSP上会有主LSP上的流量。

正确答案:错误

第19题：

Two Label-Switched Paths called LSP A and LSP B have been configured on a router. LSP A has been configured with a hold-priority of 3. There is insufficient reservable bandwidth along the path to accomodate both LSPs reservation requirements. Which setup priority must LSP B have to pre-empt LSP A and use its bandwidth?（）

• A、2
• B、3
• C、4
• D、7

正确答案:A

第20题：

You are designing a remote access strategy to meet the business and technical Requirement.  What should you do？（）

• A、 Configure each server running Routing and Remote Access as a RADIUS Client.
• B、 Add a Remote Access policy to each server running Routing and Remote Access. Configure the Access method as VPN access.
• C、 Add a Remote Access policy to each server running Routing and Remote Access. Configure the Access method as dialup access.
• D、 Add a Remote Access policy to each server running Routing and Remote Access. Configure the Access method as wireless access.

正确答案:A

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