Data Transmission Methods Quiz

Study Notes

Synchronous Transmission: Characterized by a continuous stream of data with regular timing signals, ensuring sender and receiver synchronization via an external clock.
Asynchronous Transmission: Each character is a self-contained unit with start and stop bits, allowing for uneven intervals between characters.

Start and Stop Bits: In asynchronous transmission, a start bit signals character arrival, while a stop bit indicates the end of the character.
Baud Rate: Indicates the speed of data transmission; measured in electrical oscillations per second. Higher baud rates enable more bits per second transfer.
Bit Rate: Refers to the number of bits transmitted per second in a digital network.
Bandwidth: Represents the range of frequencies used to transmit a signal.

Latency: The delay that occurs before data transfer begins after an instruction is given.

Physical Star Topology: Each node is individually connected to a central point (hub/switch). More cabling is required, but failure in one cable affects only one node.
Logical Bus Network Topology: A star topology that behaves like a bus network by using a bus protocol and appropriate switching.

Peer-to-Peer: Network stations can share resources, allowing one station to utilize another's printer or local storage.
Client-Server: Stations access resources provided by one or more centralized servers.

Wi-Fi: Enables wireless internet connectivity and communication between devices within a specific area.
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance): A method where nodes sense the carrier to avoid collisions by transmitting only when the channel is clear.
RTS/CTS (Request to Send/Clear to Send): An optional mechanism to mitigate frame collisions, often used in wireless protocols to resolve the hidden node problem.
SSID (Service Set Identifier): The case-sensitive name for a Wi-Fi network, essential for communication among devices within that network, limited to 32 bytes in length.