Networking using fibre optic cable is done as
Answer: D
Correct answer: All of the above
Fibre wins on all three counts: it carries far more bandwidth than copper, it is thin and light enough to run in great numbers, and being glass it is immune to electromagnetic interference and cannot radiate a signal to be tapped.
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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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A __________ is a group of independent computers attached to one another through communication media.
Answer: C
Correct answer: Network
A network is a set of independent computers joined by a communication medium so that they can exchange data and share resources. The internet is one particular network, and e-mail is a service that runs on one.
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What is the primary purpose of a firewall?
Answer: D
Correct answer: To control network traffic entering and leaving a system according to rules
A firewall controls traffic crossing a boundary, permitting or blocking it according to a set of rules based on addresses, ports and protocols. It may be hardware, software, or both. The kinds differ in how much they examine. A packet filter looks at each packet in isolation against static rules - fast but crude. A stateful firewall tracks connections, so it can tell a reply to an outgoing request from an unsolicited incoming packet, and is considerably more secure. An application-layer firewall or proxy inspects the content of the traffic itself. What a firewall does not do is remove malware - that is antivirus software, and the second option is the usual confusion. Nor does it help against a threat that arrives by an allowed route, such as a user downloading an infected attachment. It is one layer of defence, not a complete one.
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Segmentation of a data stream happens at which layer of the OSI model?
Answer: D
Correct answer: Transport
Breaking a stream of application data into pieces small enough to send, and reassembling them at the far end, is the transport layer's work - which is why its unit is called a segment.
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What does PROTOCOL consists of?
Answer: D
Correct answer: TCP/IP
The internet protocol suite is TCP/IP - Transmission Control Protocol over Internet Protocol. The other three options are misspellings of it.
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What do you mean by chat?
Answer: C
Correct answer: It is a type of conversation that takes place on a computer network in real time
Chat is live typed conversation: what one person types appears on the other's screen at once. A discussion area where messages are posted and read later is a forum, and uploading files is FTP.
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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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Hub is associated with .......... network.
Answer: C
Correct answer: star
A hub sits at the centre with a separate cable to each node, which is exactly the star arrangement. Logically it still behaves as a shared bus, since it repeats every signal to every port.
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What type of RJ45 UTP cable is used between switches?
Answer: A
Correct answer: Crossover cable
Two devices of the same kind - switch to switch, PC to PC - need a crossover cable, which swaps the transmit and receive pairs so that each device's transmitter meets the other's receiver. A straight-through cable is for connecting unlike devices, such as PC to switch.
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