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Carrier Sense Multiple Access/Collision Avoidance
a) Necessary since wireless LANs cannot implement CSMA/CD
b) Collision detection requires increased bandwidth requirements
c) Collisions might not be detected due to obstacles
d) Distance between stations may prevent collisions from being heard
e) Collision avoidance is accomplished through network allocation vector (NAV)
How does Intranet Work? An Intranet can be defined as a private network which uses Internet tools. The principal tool is the Web browser, but there are other Internet tools su
Q. Describe Physical Layer in OSI layers model? Physical Layer : Controls the transmission of the actual data onto the network. It describes the electrical signals, line state
Ping and Traceroute are used by ICMP for Testing. Destination Unreachable messages are obtained by a router when it does not have a route to the network.
The Common method for writing a program with PVM is as follows: A user writes one or more sequential programs in C, C++, or Fortran 77 having embedded PVM function (or subroutin
RIP and IGRP are Distance Vectoring protocols that send their whole routing tables to their neighbours. In some Cisco literature, EIGRP is listed as an 'advanced distance vector
Recognize the command to show the status of the Frame Relay virtual circuit Ans) Router# show frame-relay pvc
The science and art of manipulating messages in order to create them secure is known as cryptography..... Two types are:- Symmetric key cryptography and Asymmetric key crypto
The FORALL Statement The FORALL statement allows for more common assignments to sections of an array. A FORALL statement has the general form. FORALL ( triplet
When a P is returned when a Trace is run, it means the Protocol is unreachable.
A modified NRZ code known as enhanced-NRZ (E-NRZ) operates on 7-bit words; inverting bits 2,3,6 and 7; and adding one parity bit to each word. The parity bit is chosen to make the
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