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Define Co-axial cable. A solid central conductor surrounded by insulating material and then by a cylindrical shield woven from fine wires is called as co-axial cable. The shie
What is Microwave? Microwaves have been used in data communications. Microwave has a higher frequency than radio waves and thus can handle larger amounts of data.
Mail Access Protocols The e mail message are usually sent to an email server that stores received message in the recipient e mail mailbox. The user retrieves messa
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
A modified NRZ code known as enhanced-NRZ (E-NRZ) operates on 7-bit words; inverting bits 2,3,6 and 7; and adding one parity bit to each word. The parity bit is chosen to make the
Hosts are generally, individual machines at a specific location. Normally Resources of host machine are shared and can be used by any user on Internet. Hosts & local networks are g
Write the characteristic of Store and Forward switches? A) Store and Forward switch will not forward fragments. B) The longer the frame, the longer the delay (latenc
Q. What do you understand by OSI? Ans: The Open System Interconnection (OSI) reference model illustrates how information from a software application in one computer goes throug
if the signal input to an amplifier is 0 dBm what is the power output in mW if the gain of the amplifier is 20 dB ?
A communications channel is pathways over which information can be communicate. It may be described by a physical wire that connects communicating devices, or by a radio, laser, or
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