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Explain Ethernet Frame.
The heart of Ethernet system is the Ethernet Frame, which is used to deliver information among the computers. The frame having of a set of bits organized into several fields. These fields include address fields, a data field and an error checking field that checks the integrity of the bits in the frame to make sure that the frame has arrived intact
Deadlock Avoidance To avoid deadlocks two types of strategies are used: 1) Static prevention: It uses V and P operators and Semaphores to allocate and deallocate shared res
Station Types No-transition mobility moreover stationary or moving only inside a BSS BSS-transition mobility is able to move from one BSS to another, but confined inside one
Cisco Express Forwarding CEF is a new method of switching that available in IOS, its overcome the drawbacks of fast switching method In IOS packet switching, There are thre
What are proxy servers and how do they protect computer networks? Proxy servers primarily stop external users who identifying the IP addresses of an internal network. Without i
Hierarchy of DNS Servers DNS uses a large number of server organized in hierarchical fashion and distribution around the world. No single DNS server has all of the mappin
Two hosts are connected by a path made of four links as shown in the figure below. The links are of data rate R = 2 Mbps each. Host A has a file of size F = 1,000,000 bytes to tran
Round Trip Time (RTT) and Time Out The size and the complexity of computer networks have grown in past years. To achieve an efficient and reliable transmission some
Q. What is Virtual LANs? Virtual LANs - LAN (Local area network) configured by software not by physical wiring Virtual LANs - Divides a LAN into logical, in
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
Security Security is the protection of hardware software and data from unauthorized access. Restricted physical access to computer password protection limiting user priv
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