In a computer, the binary system is used to
Answer: C
Correct answer: Process the data
A computer's circuits have two states, so everything it works on - instructions and data alike - must be represented in binary before it can be processed. Storage and display are consequences of that, not the reason for it.
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In which OSI layers a packet filtering firewall operates?
Answer: C
Correct answer: At the network
A packet-filtering firewall makes its decisions from the headers - source and destination address, protocol and port - which places it at the network layer, where those addresses live. Application-layer inspection belongs to a proxy firewall, which is a different design.
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To browse and search for information on the internet ______________ is used
Answer: A
Correct answer: Netscape
Netscape is a browser, which is the program used to reach and search the web. Telnet gives a remote terminal session, FTP transfers files, and Eudora was a mail program.
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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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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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