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Q. Explain about Horn Antenna?
- Outgoing transmissions broadcast by a stem and deflected outward
- Received transmissions collect by a scooped part of the horn and deflected downward into the stem
Gateway A gateway is an internetwork device which joins different network protocols together. It woods on all seven layers of OSI model. Gateways are also known as pro
Fragmentation - Wireless environment is very noisy - Corrupt frames must be retransmitted - Large frames must be divided into smaller ones to increase efficiency
The Network Control Unit (NCU) is a field panel housing electronic modules, terminal blocks, and signal conditioners (pneumatic, linevoltageand electronic) all inside a one enclosu
Question 1 A) Explain briefly the advantages wireless communication systems B) What is a cellular network? Question 2 Explain fundamental architecture of
Explain what is digital certificate?
Uses of fragmentation and reassembly The More bit is used for fragmentation and reassembly. If this bit is 0, then either there has been no fragmentation of this packet or this
Alice sends a message to Bob, encrypted with a symmetric key. Bob decrypts the message and finds it is a purchase order for an expensive workstation. When the time comes to deliver
Q. Illustrate User Agent Services? User Agent (UA) Services - Provide template for user to compose a message - Reads incoming messages - Allows a user to reply to m
What Automatic Repeat Request (ARQ)? Error control is both error detection and error correction. It allows the receiver to inform the sender of any frames lost or damaged in tr
Q. Show about Alternate mark inversion? Bipolar AMI - Neutral, zero voltage represents binary 0 - Binary 1s symbolized by alternating positive and negative voltages
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