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How many methods used to control traffic flowing into and out of the network by firewall?
Firewalls utilize one or more of three ways to control traffic flowing into and out of the network as given below:
1. Packet filtering: Packets i.e., small chunks of data are analyzed against a set of filters.
2. Packets which make this through the filters are sent to the requesting system and all others are rejected.
3. Proxy service: Information through the Internet is retrieved via the firewall and after that sent to the requesting system and as vice versa
4. Stateful inspection: A newer method which doesn't inspect the contents of each packet but in its place compares exact key parts of the packet to a database of trustable information.
Q. Main drawbacks of CD-ROMs? The main drawbacks of CD-ROMs are: It is read only thus can't be updated Access time is longer than that of magnetic disks. Very
What is a shift register? Can a shift register be used as a counter? If yes, explain how? Ans: Shift Register: A register wherein data gets shifted towards left or right
Functional units of a computer system: Digital computer systems consist of 3 distinct units. These units are as follows: Central Processing unit Input unit and Output unit.
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What is most common biometrics? Explain in brief. The most common biometrics is as given below: Face geometry (Photo): The computer captures the picture of your face and m
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The hexadecimal number for (95.5) 10 is ? Ans. (95.5) 10 = (5F.8) 16 Integer part Fractional part 0.5x16=8.0
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Syntax and Semantics: Propositional logic is prohibited in its expressiveness: so just to represent true and false facts for the world. By a type of extending propositional lo
Within micro controller's software, it is very useful to be able to manipulate binary bits i.e. from ports etc. The ALU has command to shift data, rotate data, compare data, set/cl
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