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In communication weakening or loss of signal energy, typically caused by distance
Problem 1. Explain the term Switching. Describe the following Switching Mechanisms a) Circuit Switching b) Packet Switching c) Message Switching Defining Switching
Routing Information Protocol (RIP) is a distance vector routing protocol that used hop count as its metric. The maximum hop count is 15, 16 hops are considered unreachable. RIP upd
Q. Show the properties of Microwaves? Microwaves - Frequencies among 1 and 300 GHz - Unidirectional - Narrow focus requires sending as well as receiving antennas to
Explain Fiber-Optics cable. A cable with central glass tube covered with protective shield which transmit data using photons is fiber optics cable. These cables transmit data t
Most networks give dynamic connections, which last for a relatively short period. To operate this, ATM can dynamically join a switched virtual circuit (SVC), allow it last as long
A carrier is frequency modulated with a sinusoidal signal of 2 kHz, resulting in a maximum frequency deviation of 5 kHz. (a) Find the bandwidth of the modulated signal (b) The ampl
which are 5 major network services
Q. Describe about Cryptography? - Some media cannot be protected from unauthorized reception (or interception) - Encryption involves transforming the original information in
Physical layers defines with synchronizing the 1s and 0s on the wire.
Repeater Repeater is also named as active hub operates at physical layer of OSI model. Repeater is an electronic device that simply regenerates the signal. Signals travell
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