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What are the important topologies for networks?
BUS topology:In this each computer is directly connected to primary network cable in a single line.Advantages:Inexpensive, easy to install, simple to understand, easy to extend.STAR topology:In this all computers are connected using a central hub.Advantages:Can be inexpensive, easy to install and reconfigure and easy to trouble shoot physical problems.RING topology:In this all computers are connected...
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What is passive topology?
When the computers on the network simply listen and receive the signal, they are referred to as passive because they don’t amplify the signal in any way. Example for passive topology - linear bus.
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What is SAP?
Series of interface points that allow other computers to communicate with the other layers of network protocol stack.
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What is Beaconing?
The process that allows a network to self-repair networks problems. The stations on the network notify the other stations on the ring when they are not receiving the transmissions. Beaconing is used in Token ring and FDDI networks.
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What is cladding?
A layer of a glass surrounding the center fiber of glass inside a fiber-optic cable.
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What is attenuation?
The degeneration of a signal over distance on a network cable is called attenuation.
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What is Bandwidth?
Every line has an upper limit and a lower limit on the frequency of signals it can carry. This limited range is called the bandwidth.
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Explain 5-4-3 rule?
In a Ethernet network, between any two points on the network, there can be no more than five network segments or four repeaters, and of those five segments only three of segments can be populated.
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What MAU?
In token Ring , hub is called Multistation Access Unit(MAU).
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What is virtual channel?
Virtual channel is normally a connection from one source to one destination, although multicast connections are also permitted. The other name for virtual channel is virtual circuit.
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What is multicast routing?
Sending a message to a group is called multicasting, and its routing algorithm is called multicast routing.
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What is wide-mouth frog?
Wide-mouth frog is the simplest known key distribution center (KDC) authentication protocol.
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What is Mail Gateway?
It is a system that performs a protocol translation between different electronic mail delivery protocols.
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What is IGP (Interior Gateway Protocol)?
It is any routing protocol used within an autonomous system.
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What is EGP (Exterior Gateway Protocol)?
It is the protocol the routers in neighboring autonomous systems use to identify the set of networks that can be reached within or via each autonomous system.
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What is autonomous system?
It is a collection of routers under the control of a single administrative authority and that uses a common Interior Gateway Protocol.
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What is Gateway-to-Gateway protocol?
It is a protocol formerly used to exchange routing information between Internet core routers.
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What is NVT (Network Virtual Terminal)?
It is a set of rules defining a very simple virtual terminal interaction. The NVT is used in the start of a Telnet session.
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What is a Multi-homed Host?
It is a host that has a multiple network interfaces and that requires multiple IP addresses is called as a Multi-homed Host.
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What is SLIP (Serial Line Interface Protocol)?
It is a very simple protocol used for transmission of IP datagrams across a serial line.
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