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What is Proxy Sever and Firewall
Proxy Sever
Also known as a proxy or application level gateway. It is an application that breaks the connection among sender and receiver. Thus, it helps us to stop hacker from getting Internet address and detail of a private network.
Firewall
Firewall is a method for keeping a network secure. It is mainly used in giving user's access to the Internet in a secure fashion as well as to separate a company's public web server from its internal network.
MULTICASTING : The answer to above problem is multicasting. It is the normal form of broadcasting. It acts like broadcasting however it does not broadcast frames automatically
Facts about Fiber Optic Cables 1. Outer insulating jacket is made of Teflon or PVC. 2. Kevler fiber helps to strengthen the cable and prevent breakage. 3. A plas
Options The options fields may be used to provide other functions that are not covered by the header. If the length of the options field is not a multiple of 32 bits
Q. What is Cross over cable? - Cross the critical pair to properly transmit, align and receive signals on devices with like connections. - Pin 1 connected to pin 3 as well a
Question: (a) Distinguish between UDP and TCP. (b) You have been asked to design and implement a chat application for a university. Which protocol could you used TCP or UDP
The application layer This layer enables users to access the network by providing a few services to the user some of the protocols and services available to the user ar
Question: a) One of the most important duties of a system administrator is to protect the information that is stored on network servers. In the same context, describe both Ma
Responses Responses are sent from the server to the client. A responses is a three digit code that may be followed by additional textual information.
Q. Show the RS232 Logic Waveform ? RS-232 Interface Three most important wires for the Serial interface Transmit - Pin 2 Receive - Pin 3 Ground - Pin
The Physical layer deals with the definite physical medium and the method of transporting 1s and 0s.
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