cisco ccna exam 200 301

cisco ccna exam 200 301.. Link Control Protocol (LCP) o .. Network Control Protocol (NCP) o .Each of these three components plays an important role in establishing and configuring a PPP connection and in transmitting information through it. The next few subsections discuss these components.Frame formatThe first component of PPP is the frame format (encapsulation method) it uses. o The frame format specifies how network layer packets are encapsulated in a PPP frame, and the format of the PPP frame. PPP is typically used for serial WAN connections because it is based on open standards. It can be used for asynchronous (modem) and synchronous (ISDN, point-to-point, and HSSI) connections. A dial-up connection to an ISP will use PPPo As can be seen from Figure 24.5, the PPP frame format is based on ISOHDLC, the main difference being that the PPP frame contains a protocol field to indicate which network layer protocol data is being encapsulated.LCP and NCPThe second and third components of PPP are the LCP and NCPoLCP is responsible for the establishment, configuration, authentication and checking of the PPP connection, and all the preparatory work before establishing the connection is handled by it. The following are some of the aspects that the LCP will negotiate when establishing a PPP connection.. The authentication method to be used (PPP Authentication Process [PAP] or Question Handshake Authentication Protocol [CHAP]) o. The compression algorithm to be used (Stacker or Predictor) o . The callback phone number to be used. . Multi-link: other physical connections to be used. LCP and NCP establish a PPP connection in three steps.1. link establishment (