Computer Networking Which of the following is considered a broadband communications channel? coaxial cable fiber optic cable satellites systems All of these microwave circuits coaxial cable fiber optic cable satellites systems All of these microwave circuits 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. P I (K + 1) None of these 1/ (1 - F) KIK (1 + F) K I (K - P) P I (K + 1) None of these 1/ (1 - F) KIK (1 + F) K I (K - P) ANSWER DOWNLOAD EXAMIANS APP
Computer Networking Which of the following characteristics is not true of NetBEUI? 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 None of these 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 Multiplexers use Time Division Multiplexing (TDM) while statistical multiplexers use Frequency Division Multiplexing (FDM) Multiplexer use X.25 protocol, while statistical multiplexers use the Aloha protocol 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 Multiplexers use Time Division Multiplexing (TDM) while statistical multiplexers use Frequency Division Multiplexing (FDM) Multiplexer use X.25 protocol, while statistical multiplexers use the Aloha protocol 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/CA Ethernet CSMA/CD ARCnet Token-Ring CSMA/CA Ethernet CSMA/CD ARCnet Token-Ring ANSWER DOWNLOAD EXAMIANS APP
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