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Q. Show the Vulnerability of the Internet?
More vulnerable than private network.
Wide inter-network connection.
Easy access by mass public world-wide.
Lack of build in monitoring and security control with TCP/IP.
Extensibility of web technology creates many security flaws.
Attacks can be automated, anonymous, worldwide, and difficult to detect.
ACK Received If an ACK is received by the sender. The SR sender marks that packet as having been received by the receiver.
Q. Define the Backbone Networks? Backbone Networks - Allows several LANs to be connected - Non of station is directly connected to the backbone - Stations are part
What is Error Control ? Error control is both error detection and error correction. It allows the receiver to inform the sender of any frames lost or damaged in transmission an
(a) Explain how a CDMA system works? (b) Explain howWelsh-Hadamard codes are generated. Explain why orthogonality between different spreading codes is important. (c) Consider
Link Layer To move to packet from one node( host or packet swtich0 to net node in the route the network layer relies on the services of the link layer. Particularl
introduction
Bridges - Operate in both physical and data link layers - Utilized to divide a network into smaller segments - May as well relay frames between separate LANs - Keeps t
AILURES AND BATHTUB CURVE The life of a component system can be grouped into three different phases typical curve depicting these three is called the bathtub curve due to its s
Difference between Unicast and Anycast Unicast: An identifier for a single interface. A packet sent to a unicast address is delivered to the interface identified by that addres
definition
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