Which of the following is considered a broad band communication channel?
Answer: D
Correct answer: All of these
Broadband means a channel of wide bandwidth, and coaxial cable, microwave links and optical fibre all qualify - each carries far more than a single voice channel.
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A protocol is a set of rules governing a time sequence of events that must take place
Answer: D
Correct answer: across an interface
A protocol governs the exchange at the boundary between two entities, so the sequence of events it specifies takes place across an interface. The phrasing matters: peers communicate through an interface, and the rules apply at it.
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................ is the most important/powerful computer in a typical network.
Answer: A
Correct answer: Network server
The server holds the shared data and services and answers requests from every other machine, so it needs the greatest capacity and its failure affects everyone. Clients and stations are the machines making the requests.
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P2P is a ............ application architecture.
Answer: A
Correct answer: distributed
In peer-to-peer every node acts as both client and server, so there is no central machine and the work and data are spread across the participants. That is a distributed architecture; client/server is precisely the arrangement it dispenses with.
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Network components are connected to the same cable in the ............ topology.
Answer: C
Correct answer: bus
In a bus topology every station taps into the same length of cable, so one break can disable the whole segment. A star gives each node its own cable to a central device.
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Two or more computers connected to each other for sharing information form a
Answer: A
Correct answer: network
Two or more computers connected so as to share information form a network. A server is a role a machine may play on one, and a router is a device that joins networks together.
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Which of the following is not a network device?
Answer: C
Correct answer: Modem
Routers, switches and bridges all forward traffic between hosts or segments within a network. A modem converts between digital and analogue signals so that data can cross a telephone line; it adapts the signal rather than making forwarding decisions, which is why it is not counted among the network devices proper.
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What is the use of bridge in network?
Answer: A
Correct answer: To connect LANs
A bridge joins two LAN segments and forwards frames between them, learning which addresses lie on each side so that local traffic stays local. It therefore connects the segments while separating their collision domains.
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The first network that has planted the seeds of internet was
Answer: A
Correct answer: ARPANET
ARPANET, built for the US Defense Department's Advanced Research Projects Agency from 1969, was the first packet-switched network and the direct ancestor of the internet. NSFNET came later and carried the traffic once ARPANET was retired.
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Ethernet, token ring and token bus are types of
Answer: B
Correct answer: LAN
Ethernet, token ring and token bus are all local area network technologies, distinguished by how stations gain access to the shared medium: contention in Ethernet, a circulating token in the other two.
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