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Switching via memory
Traditional computers with switching between input and output being doen under direct control of the CPU input and output ports functioned as traditional I/O devices in a traditional operating systems. Aninput port with an arriving packet first signalled the routing processor. The packet was then copied from the input port into processor memory. The routing processor then extract the destination address from the heard looked up the appropriate output port in the forwarding table and the packet to the output buffers. Note that if memory bandwidth is B packets per second can be written into or read from memory them the overall forwarding throughput ( the total rate at which packets are transferred from input ports to output ports ) must be less than B/2.
Hyper Text Transfer Protocols ( HTTP) The Hyper text protocols ( HTTP) is at the heart of the web. If a browser developer follows the rules of the HTTP, the browser w
Half-Duplex - Capability for data transmission in only single direction at a time among sending station and a receiving station.
Application Layer The application layer provides an interface between application entities and the users computer. This layer offers services to a variety of aspects of d
Security Security is the protection of hardware software and data from unauthorized access. Restricted physical access to computer password protection limiting user priv
Can you describe the concept of OSI layer
Consider the following network example. Suppose that the distance vector (DV) routing algorithm is used to compute the distance between nodes. (a) Show the procedure of nod
What is subnet mask? A subnet mask is combined with an IP address in order to recognize two parts: the extended network address and the host address. Such as an IP address, a s
When the signal hits to each other, collision accord.
#clasification of inductor
ICMP is used to send error and control messages. Ping uses ICMP to carry the echo-request and echo-reply.
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