In a network, if a computer shares the resources to be used by others then that computer is called
Answer: B
Correct answer: Server
A machine that makes its resources available to others is acting as a server; the machines using them are clients. In a peer-to-peer network every machine does both at once.
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Which one of the following statement is correct for the term URL?
Answer: C
Correct answer: It is the address of page on World Wide Web
A URL - Uniform Resource Locator - identifies where a resource is and how to fetch it: the scheme, the host and the path.
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In a ring topology, the data can be transmitted only if the computer possess
Answer: A
Correct answer: Token
In a token ring only the station holding the token may transmit, and it passes the token on when finished. That is how the topology avoids collisions without any contention.
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What is the name of the topology in which if the cable of a computer network is broken then the whole network goes down?
Answer: C
Correct answer: Bus
In a bus every station taps into one shared cable, so a break in it divides or disables the whole segment. A star gives each node its own cable, and a ring or mesh can often route around a failure.
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When static packet filter is used on the router then the statement which is not correct for firewall protection is
Answer: B
Correct answer: Static packet filtering is more secure than dynamic packet filtering
Static filtering judges each packet on its headers alone, with no memory of what has gone before. Stateful and dynamic filtering track connections and so can tell a legitimate reply from an unsolicited packet, which makes them the more secure of the two - so the statement claiming the reverse is the one that does not hold.
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The term used for transferring a file from another computer to your computer is
Answer: D
Correct answer: Downloading a document
Bringing a file to your machine is downloading; sending one away from it is uploading. The direction is what the two words distinguish.
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From the options given which one acts as a doorway to the rest of the website pages?
Answer: A
Correct answer: Home page
The home page is the site's front door: it is what a visitor reaches by default and it carries the links to everything else. A URL is an address and a browser is the program that fetches it.
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Which topology is used for large networks?
Answer: D
Correct answer: Star
A star scales best because each node has its own link to the centre: adding a node affects nobody else, and one failed cable takes down one machine rather than the network. A bus or ring shares one medium among all stations.
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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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It is not used as a means for personal communications in internet.
Answer: A
Correct answer: Instanoles
Chat, electronic mail and instant messaging are all real means of personal communication over the internet. Instanoles is not a service at all, which is what makes it the answer.
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