Computer Networking Data link layer retransmits the damaged frames in most networks. If the probability of a frame's being damaged is p, what is the mean number of transmissions required to send a frame if acknowledgements are never lost. KIK (1 + F) 1/ (1 - F) None of these K I (K - P) P I (K + 1) KIK (1 + F) 1/ (1 - F) None of these K I (K - P) P I (K + 1) ANSWER DOWNLOAD EXAMIANS APP
Computer Networking Which of the following ISO level is more closely related to the physical communications facilities? Data Link Session Application Networking Data Link Session Application Networking ANSWER DOWNLOAD EXAMIANS APP
Computer Networking The Acme Corporation is implementing dial-up services to enable remote-office employees to connect to the local network. The company uses multiple routed protocols, needs authentication of users connecting to the network, and since some calls will be long distance, needs callback support. Which of the following protocols is the best choice for these remote services? HDLC PAP Frame Relay 802.1 PPP HDLC PAP Frame Relay 802.1 PPP ANSWER DOWNLOAD EXAMIANS APP
Computer Networking Bulletin board system is a public access message system converts analog signals to digital signals converts digital signals to analog signals is a modem capable of accepting commands None of these is a public access message system converts analog signals to digital signals converts digital signals to analog signals is a modem capable of accepting commands None of these ANSWER DOWNLOAD EXAMIANS APP
Computer Networking An error-detecting code inserted as a field in a block of data to be transmitted is known as flow control Error detecting code Frame check sequence Checksum None of these flow control Error detecting code Frame check sequence Checksum None of these ANSWER DOWNLOAD EXAMIANS APP
Computer Networking Which of the following communications lines is best suited to interactive processing applications? simplex lines None of these full-duplex lines mixed band channels narrowband channels simplex lines None of these full-duplex lines mixed band channels narrowband channels ANSWER DOWNLOAD EXAMIANS APP
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