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Repeater known as regenerator; it is an electronic machine that performs only at physical layer. It gets the signal in the network before it becomes loss or weak, recreates the original bit pattern and transfer the refreshed copy back in to the layer.
(a) Describe briefly the difference between flow control and congestion control in relation to a connection-oriented protocol such as TCP. (b) What is the initial rate of data
INTRODUCTION TO PHYSICAL SECURITY The Physical security addresses design, execution, and maintenance of countermeasures which protect physical resources of an organization. The
1. Network Design Design your network giving appropriate IP addresses for your hosts. Provide a topology and table showing your addressing scheme. 2. F i re wall po
B-Router Hybrid devices that has the features of both routers and bridges . A bridge router or brouter is a network machine that acts as a router and as a bridge. The brout
Question: (a) What do you understand by the term "integrity"? (b) Which type of attack denies authorized users access to network resources? (c) You have discovered tha
Question: (a) Give 2 benefits of using IPsec. (b) IPSec uses two protocol for security: Authentication Header protocol (AH) and the Encapsulated Security Header Protocol (
Routers They transfer packets among multiple interconnected network machines (i.e. LANs of different kind). They perform in the data link, physical and network layers. They ha
Question: (a) A string of ciphertext was enciphered using an a±ne transformation of single letters in a 28-letter alphabet consisting of A to Z, a blank and a?, where A to Z ha
Types of IDSs and Detection Methods IDSs operate as network based, host based, or application based systems and focused on protecting network information assets. All the IDSs us
PARITY BIT: A parity bit is an extra bit transmitted with data item select to give the resulting bit odd or even parity. For example an even parity data packet 10100001 has p
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