7 - Q.1 Why are Network Control Protocols used in PPP to...

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Q.1 Why are Network Control Protocols used in PPP? to establish and terminate data links to provide authentication capabilities to PPP to manage network congestion and to allow quality testing of the link to allow multiple Layer 3 protocols to operate over the same physical link ** Q.2 What is the data transmission rate for the DS0 standard? 44 kb/s 64 kb/s ** 1.544 Mb/s 44.736 Mb/s Q.3 In which two layers of the OSI model are key differences found between a LAN and a WAN. (Choose two.) Layer 1 ** Layer 2 ** Layer 3 Layer 4 Layer 6 Layer 7 Q.4 Which statement is true about the Cisco implementation of the HDLC protocol? It supports authentication.
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It has a universally compatible frame format. It is the default encapsulation for serial interfaces on Cisco routers. ** It does not support multiple protocols across a single link. Q.5 Refer to the exhibit. A network administrator has a connectivity problem between the serial interfaces of Merida and Vargas. What is the cause of the problem? Authentication is required on the serial link. The encapsulation is misconfigured. ** The IP addresses are on different subnets. The serial interface on Vargas is shutdown. The loopback interfaces on both routers are not configured. Q.6 Refer to the exhibit. What statement is true about the exhibited output? LCP is in the process of negotiating a link. LCP and NCP are waiting for CHAP authentication to complete. LCP negotiation has completed successfully, but NCP negotiation is in progress. LCP and NCP negotiation is complete, and the data link service is available to carry packets. ** Q.7 Which three statements are true regarding LCP? (Choose three.) It is responsible for negotiating link establishment. ** It negotiates options for Layer 3 protocols running over PPP.
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