Computer Networking Which of the following is considered a broadband communications channel? coaxial cable satellites systems fiber optic cable All of these microwave circuits coaxial cable satellites systems fiber optic cable 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. 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? Little configuration required None of these Fast for small networks to Self-tuning Routable Highly-customizable Little configuration required None of these Fast for small networks to Self-tuning Routable Highly-customizable ANSWER DOWNLOAD EXAMIANS APP
Computer Networking The difference between a multiplexer and a statistical multiplexer is Statistical multiplexers need buffers while multiplexers do not need buffers Multiplexers use Time Division Multiplexing (TDM) while statistical multiplexers use Frequency Division Multiplexing (FDM) None of these Multiplexers often waste the output link capacity while statistical multiplexers optimize its use Multiplexer use X.25 protocol, while statistical multiplexers use the Aloha protocol Statistical multiplexers need buffers while multiplexers do not need buffers Multiplexers use Time Division Multiplexing (TDM) while statistical multiplexers use Frequency Division Multiplexing (FDM) None of these Multiplexers often waste the output link capacity while statistical multiplexers optimize its use 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? Ethernet ARCnet CSMA/CA Token-Ring CSMA/CD Ethernet ARCnet CSMA/CA Token-Ring CSMA/CD ANSWER DOWNLOAD EXAMIANS APP
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