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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.
The term signaling is used to define communication about the network, as opposed to interaction that just uses the network. A computer uses signaling with reserved VCI/VPI numbe
As configuring of VLANs helps in controlling the size of broadcast domains. There are some key components of inter-VLAN routing such as VLAN capable switch Router Ro
Error Detection- 2D/LRC Adds an additional character (instead of a bit) A block of bits is prearranged in a table The Parity Bit for every data unit is calculate
Question: a) In relation to network design, give two reasons why the building-block approach is favoured to the traditional approach. b) Explain the following steps in rela
Perfect Shuffle Permutation This was advised by Harold Stone (1971). Consider N objects each characterized by n bit number say X n-1, X n-2, X 0 (N is chosen such that N
Non-Blocking and Blocking network In Non-blocking networks, route from a free input node to another free output node can forever be provided. Crossbar is an illustration of non
Q. Illustrate Transport Layer Responsibilities ? - Process-to-process delivery of whole message - Port addressing - Segmentation and reassembly - Connection control co
Physical Media In order to define what is meant by a physical medium let us reflect on the brief life of a bit. Consider a bit travelling from one end system through a serie
Selection of computing infrastructure The computing equipment on an Intranet must be selected in such a manner that they do not get obsolete very quickly or become too costly f
DNS Message There are the only two kinds of DNS message DNS query and reply messages. Further mote both query and reply message have the same format as shown in figure.
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