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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.
IP plus port (IP on layer 3 and port on Layer 4 - In Encapsulation, socket base decision on Network Layer -Layer 3)
It is possible for a datagram to generate ICMP errors after it has been fragmented. For example, suppose that each of two fragments cannot be delivered. Seemingly, this would mean
Ajax is a relatively new set of techniques that, in a sense, implement some of the functionalities originally provided by RPC. Ajax is primarily used to build web applications with
Can you describe PPP packet format?
Reverse Address Resolution Protocol - RARP is ARP's counterpart, but it resolves IP addresses to MAC addresses typically on diskless workstations.
Compare Error Detection and Error Correction: The correction of errors is more difficult than the detection. In error detection, checks only any error has happened. In error co
There are three building blocks of client/server a) The client b) The server and c) Middleware.
Network Protocols In computer networks communication occurs between the entities in different systems an entity is anything that is capable of sending or receiving
What are the advantages of Star Topology? The advantages of star topology are: a. Relatively easy to configure. b. Simple to troubleshoot c. Media faults are automatic
Token Passing Station is able to send only when it receives a special frame called a token Token circulates around the ring If station wishes to sen
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