Computer Networks Basic — Test 1

Correct Answer: C. C. Both lcp and ncp
Explanation: LCP stands for Link Control Protocol and NCP stands for Network Control Protocol. LCP and NCP are the PPP protocols which provide interface for handling the capabilities of the connection/link on the network.

Correct Answer: C. C. Is designed for simple links which transport packets between two peers and making an internet connection over a phone line
Explanation: The PPP protocol is designed for handling simple links which transport packets between two peers. It is a standard protocol that is used to make an Internet connection over phone lines.

Correct Answer: A. A. Link
Explanation: PPP provides function of the link layer in the TCP/IP suite. It focuses on the link between two nodes that is going to be used by the users to communicate. It can use pre-installed phone line for the purpose.

Correct Answer: B. B. Three (encapsulating, a link control protocol, ncp)
Explanation: PPP consists of three components namely Link Control Protocol (LCP), Network Control Protocol (NCP), and Encapsulation. LCP and NCP are the PPP protocols which provide interface for handling the capabilities of the connection/link on the network and encapsulation provides for multiplexing of different network-layer protocols.

Correct Answer: A. A. Provides for multiplexing of different network-layer protocols
Explanation: Encapsulation is a part of PPP which provides means for multiplexing of different network-layer protocols. The other two parts of PPP are Link Control Protocol and Network Control Protocol.

Correct Answer: A. A. Establishing, configuring and testing the data-link connection
Explanation: The Link Control Protocol (LCP) is the part of PPP that is used for establishing, configuring and testing the data-link connection. The other two components are Network Control Protocol and Encapsulation.

Correct Answer: B. B. Are a series of independently-defined protocols that encapsulate
Explanation: The family of network control protocols (NCPs) is a series of independently-defined protocols that encapsulate the data flowing between the two nodes. It provides means for the network nodes to control the link traffic.

Correct Answer: A. A. Ppp can terminate the link at any time
Explanation: PPP allows termination of the link at any time in any phase because it works on the data link layer which is the layer in control of the link of the communication.

Correct Answer: D. D. Link dead phase
Explanation: The link necessarily begins and ends with the link dead phase. During this phase, the LCP automata will be in the initial or its final state. The link is non-functioning or inactive during the link dead phase.