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What are gateways?
Gateways give connectivity among two or more network segments. It is usually a computer that runs the gateway software and gives translation services. This translation is a key in allowing dissimilar systems to communicate on the network.
Quetion: An amplifier increases the peak-to-peak voltage of a signal from 1 V to 20 V. What is the amplifier's gain in dB?
Bridge A bridge operation sin both physical and data link layer of OSI model. At physical layer it works like repeater as it regenerates the signal and performs int
802.11b HR DSSS a) High-rate DSSS using a 2.4 GHz band b) Similar to DSSS excluding for encoding method c) Uses complementary code keying (CCK), encoding 4 or 8 bits to
Reliable data transfer over a channel bit error rdt : 20 A more realist model of the underlying channel is one in which bits in packet may be computed. Such bit erro
Can you describe the concept of IP multicasting or multicast IP address?
Control Frame: claim_token Consider first station turned on Station notices no tokens Sends claim_token No competitors, so makes a ring of just itself P
Serialized data is not generally sent at a uniform rate by a channel. Instead, there is usually a burst of regularly spaced binary data bits followed by a pause, after which the da
explain history of internet?
UDP sends packets 'blind' down the network, and relies on upper-layer protocols to form connections and identify errors. TCP is a connection-oriented protocol that can give reliabl
Telephone companies (Telco's) stated ATM to meet various goals. It gives universal service for all support and subscribers for all users for video, voice and data. It has a single
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