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Firewall
The NAT router allows receiving of number of a data streams. If it receives a transmission in the form of acknowledgement or data streams or error responses from an external server due to a particular request from an internal user, then it will receive the data, translate the address to local IP address and forward it to the requesting user. By preventing all incoming requests or connections except those expected or permitted, the router acts as a "firewall".
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
- Light source is LED (light-emitting diode) or a laser - LEDs are cheaper however not as precise (unfocused) limited to short-distance use - Lasers is able to have a narrow
How many types of twisted pair cable are there We can find two types of twisted pair cables, namely: Unshielded Twisted Pair Cable (UTP) and Shielded Twisted Pair Cable (STP).
10Base5 - Thicknet A rigid coaxial cable (RG-8) approx 0.4 in' thick used in the original Ethernet networks Bus topology LAN utilize base signalling with a maximum se
State the Disadvantages of adaptive routing process (1) The routing decision is more difficult; thus, the processing burden on network nodes enhances. (2) In most cases, ad
Q. Explain Full Duplex data transmission? - Have two separate Communication channels as well as use each one for simplex Data traffic (in different directions). - If this is
UDP Segment Structure The primary purpose of the UDP protocols is to expose datagram's to the application layer. The UDP protocols does very little and therefore employ
Cell splitting In practice, the distribution of traffic and topographic features is not uniform, and this shows opportunities of capacity enhance. Cells in areas of high usage
Reverse Address Resolution Protocol - RARP is ARP's counterpart, but it resolves IP addresses to MAC addresses typically on diskless workstations.
What is NIC and WAN? NIC is short for Network Interface Card. This is a peripheral card that is joined to a PC in order to connect to a network. Each NIC has its own MAC addres
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