Computer Networking Which of the following is considered a broadband communications channel? microwave circuits satellites systems All of these coaxial cable fiber optic cable microwave circuits satellites systems All of these coaxial cable fiber optic cable ANSWER DOWNLOAD EXAMIANS APP
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. None of these K I (K - P) KIK (1 + F) P I (K + 1) 1/ (1 - F) None of these K I (K - P) KIK (1 + F) P I (K + 1) 1/ (1 - F) ANSWER DOWNLOAD EXAMIANS APP
Computer Networking Which of the following characteristics is not true of NetBEUI? None of these Fast for small networks to Self-tuning Routable Little configuration required Highly-customizable None of these Fast for small networks to Self-tuning Routable Little configuration required Highly-customizable ANSWER DOWNLOAD EXAMIANS APP
Computer Networking The difference between a multiplexer and a statistical multiplexer is Multiplexers often waste the output link capacity while statistical multiplexers optimize its use Statistical multiplexers need buffers while multiplexers do not need buffers None of these Multiplexer use X.25 protocol, while statistical multiplexers use the Aloha protocol Multiplexers use Time Division Multiplexing (TDM) while statistical multiplexers use Frequency Division Multiplexing (FDM) Multiplexers often waste the output link capacity while statistical multiplexers optimize its use Statistical multiplexers need buffers while multiplexers do not need buffers None of these Multiplexer use X.25 protocol, while statistical multiplexers use the Aloha protocol Multiplexers use Time Division Multiplexing (TDM) while statistical multiplexers use Frequency Division Multiplexing (FDM) ANSWER DOWNLOAD EXAMIANS APP
Computer Networking You are trying to decide which type of network you will use at your office, and you want the type that will provide communication and avoid collisions on the cable. Which of the following is the best choice? CSMA/CD Ethernet ARCnet Token-Ring CSMA/CA CSMA/CD Ethernet ARCnet Token-Ring CSMA/CA ANSWER DOWNLOAD EXAMIANS APP
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