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Access Networks and Physical Media
Access networks are the physical links(S) that connect an end systems to its edge router. Which is the first router on a path from the end systems. The access networks thus provides the infrastructure to connect the so called customer premises into the network infrastructure. Figure 2.3 shows several types of access links are highlighted in thick shaded lines.
figure Access Network
Difference among the communication and transmission? Transmission is a physical movement of information and concern issues as bit polarity, synchronization, clock etc. Commu
Describe the main factors of switching delay No. The speed of propagation is 200,000 km/sec or 200 meters/µsec. In 10 µsec signal travels 2 km. Therefore, each switch adds equi
CONNECTION MULTIPLEXING: In various circumstances transceiver can be in convenient e.g. workstations in a LAN. Connection multiplexer acts multiple computers to a single tran
802.11b HR DSSS a) High-rate DSSS using a 2.4 GHz band b) Similar to DSSS excluding for encoding method c) Uses complementary code keying (CCK), encoding 4 or 8 bits to
Packet Cost Both distance vector and link state routing are lowest algorithms. Tow factors govern how cost is applied to packets in determines a route. Cost is a
Q. Resolution of domain name system? - Mapping a name to an address or else an address to a name - Resolver is a DNS client used by an address to provide mapping - In re
The table below gives a summary of special IP addresses.
The are various limitations of employing Wireless LAN technology in any multistory building in middle of Melbourne or any other big city are: • Range: The main problem of Wire
Determine the concept of placing antenna on hieght First, starting deployment simply placed cells in regions where there was high density of vehicle or human population. Once t
Q. Explain the diffrent types of Security Attacks? Types of Security Attacks Passive Threats: - Traffic Analysis and - Release of Message Contents Active
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