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The first P in the PPP teaching model stands for____, which aims to get learners to perceive the form and meaning of a structure.
A . practice
B . production
C . presentation
D . preparation
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以下PPP的运作方式中，涉及对PPP存量项目进行评估的方式有（）。
A . 建设-运营-移交（BOT）
B . 建设-拥有-运营（BOO）
C . 转让-运营-移交（TOT）
D . 改建-运营-移交（ROT）
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All WAN links inside the ABC University network use PPP with CHAP for authentication security. Which command will display the CHAP authentication process as it occur between two routers in the network?（）
A . show chap authentication
B . show interface serial0
C . debug ppp authentication
D . debug chap authentication
E . show ppp authentication cha
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Which of the following are key characteristics of PPP?（）
A . can be used over analog circuits
B . maps Layer 2 to Layer 3 address
C . encapsulates several routed protocols
D . supports IP only
E . provides error correctio
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Which PPP subprotocol negotiates authentication options?（）
A . NCP
B . LCP
C . ISDN
D . DLCI
E . SLIP
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PPP是今后发展的的主流?下列选项中（）不是PPP所提供的功能。
A . A、成帧的方法
B . B、LCP
C . C、IPX
D . D、NCP
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PPP是今后发展的的主流，下列选项中（）不是PPP所提供的功能。
A . A、成帧的方法
B . B、LCP
C . C、IPX
D . D、NC
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You are about to configure PPP n the interface of a Cisco router. Which authentication methods could you use?（）
A . SSL
B . SLIP
C . PAP
D . LAPB
E . CHAP
F . VNP
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电子移交过程中飞行计划传输的几个阶段：预告（Pre-notifying）、通告（notifying）、商议（negoti-ating）、协调进行（coordinating）、协调完成（coordinated）、再商议（Re-nego-tiating）。
A . 正确
B . 错误
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在PPP会话建立的过程中，当物理层可用时，PPP链路进入（）阶段。
A . A.Establish
B . B.Network
C . C.Authentication
D . D.Dead
E . E.Terminate
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在PPP协议中，PPP验证成功后，将由Authenticate阶段转入Establish阶段。（）
A . 正确
B . 错误
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PPP模式在我国应用广泛，取决于它具有的特征，以下属于PPP特征的是（）。
A . 利益共享，风险共担
B . 伙伴关系，利益共享，风险共担
C . 互赢互利，伙伴关系
D . 互赢互利，风险共担
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Which two statements about using the CHAP authentication mechanism in a PPP link are true?（）
A . CHAP uses a two-way handshake
B . CHAP authentication periodically occurs after link establishment
C . CHAP has no protection from playback attacks
D . CHAP authentication is performed only upon link establishment
E . CHAP uses a three-way handshake
F . CHAP authentication passwords are sent in plaintext
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Which of the following can LCP successfully negotiate during the establishment of a PPP connection?（）
A . Q.931
B . IPCP
C . multilink
D . CHAP
E . callback
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The first P in the PPP teaching model stands for＿＿，which aims to get learners to perceive the form and meaning of a structure.
A . practice
B . production
C . presentation
D . preparation
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Which PPP subprotocol negotiates authentication options？（）
A . NCP
B . LCP
C . ISDN
D . DLCI
E . SLIP
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Which of the following are key characteristics of PPP (Choose three.)（）。
A . can be used over analog circuits
B . maps Layer 2 to Layer 3 address
C . encapsulates several routed protocols
D . supports IP only
E . provides error correctio
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Which of the following correctly describe characteristics of PPP?（）
A . Encapsulates several different types of routing protocols.
B . Supports only IP.
C . Can be used over analog circuits.
D . Is proprietary to Cisco
E . Supports error correction.
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Which of the following options lists the steps in PPP session establishment in the correct order?（）
A . Optional authentication phase, link establishment phase, network layer protocol phase.
B . Network layer protocol phase, link establishment phase, optional authentication phase.
C . Network layer protocol phase, optional authentication phase, link establishment phase.
D . Link establishment phase, network layer protocol phase, optional authentication phase.
E . Link establishment phase, optional authentication phase, network layer protocol phase.
F . Optional authentication phase, network layer protocol phase, link establishment phase.
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Which is not a reason that Internet Service Providers prefer to use PPP over Ethernet (PPoE)?（）
A . access control and billing can be done on a per-user, rather than a per-site basis
B . supports Link Fragmentation and Interleaving
C . provides the ability to connect a network of hosts over a simple bridging access device
D . provides a consistent means of authenticating users (RADIUS for example)
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Which of the following are key characteristics of PPP? (Choose three.)（）
A . can be used over analog circuits
B . maps Layer 2 to Layer 3 address
C . encapsulates several routed protocols
D . supports IP only
E . provides error correctio
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The ERX Edge Router responds toa received PPP over Ethernet Active Discovery Initiation（PADI) with which message type？（）
A.PPPoE Active Discovery Offer
B.PPPoE Active Discovery Initiation
C.PPPoE Active Session Confirmation
D.PPPoE Active Session Acknowledgment
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根据《云南红塔银行PPP贷款业务管理办法》规定，PPP贷款指本行针对不同的PPP运营模式向社会资本和项目公司发放的贷款，以下哪些贷款类型属于PPP贷款（）
A．O&M贷款
B．OT贷款
C．TOT贷款
D．T贷款
