Cisco Certified Network Associate (CCNA) Practice Exam

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Study for the Cisco Certified Network Associate (CCNA) exam with our comprehensive quiz featuring multiple-choice questions and detailed explanations. Prepare effectively and enhance your understanding of networking concepts!

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Which protocol is designed to provide encapsulation for multiple network layer protocols in a PPP connection?

Link Control Protocol (LCP)
Point-to-Point Protocol (PPP)
Network Control Protocol (NCP)
TCP/IP

The correct answer is: Network Control Protocol (NCP)

Network Control Protocol (NCP) is designed to provide encapsulation for multiple network layer protocols in a Point-to-Point Protocol (PPP) connection. NCP plays a critical role in enabling the PPP framework to support various network layer protocols such as IP, IPX, and AppleTalk. When PPP is established between two endpoints, the Link Control Protocol (LCP) is first used to configure and test the data link connection. Once the link is established and configuration is agreed upon through LCP, NCP comes into play. It allows for the encapsulation of different network layer protocols over the established PPP link. This capability gives NCP the flexibility to handle multiple protocols that may be used in networking, making it an integral part of the PPP framework. Essentially, NCP allows for the concurrent use of multiple network protocols over the same PPP link, ensuring that different types of traffic can be carried efficiently.