SYS at University of Nottingham

Flashcards and summaries for SYS at the University of Nottingham

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What is RS232

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What are Ethernet switches?

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What is a dynamic routing table?

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What is a start bit

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Is RS232 classed as half duplex or full duplex

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Types of half duplex networking

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Which of the following is true about the first bit
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Exemplary flashcards for SYS at the University of Nottingham on StudySmarter:

Which of the following about modulation and demodulation is correct? 

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Which of the following about a shared medium is correct?

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Types of mediums - shared medium. 

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Which of the following is true about a ring network
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Which voltages does RS232 use to send bits along a wire? What's the disadvantage of this? 

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Exemplary flashcards for SYS at the University of Nottingham on StudySmarter:

SYS

What is RS232
° Serial, point-to-point standard for linking computers.

SYS

What are Ethernet switches?

Ethernet is now a switched network making the possibility of collision minuscule. Frames are received by the switch and then forwarded out on the correct port. It also provides full-duplex communication.

SYS

What is a dynamic routing table?

The program on the router builds an initial routing table at boot. This table is updated as network conditions change. Routers inform each other of changes. Flexible and autonomous.

SYS

What is a start bit
Start bit is always 0

SYS

Is RS232 classed as half duplex or full duplex
Full duplex 

SYS

Types of half duplex networking
WiFi

SYS

Which of the following is true about the first bit
Transmission of a character will always being with a transition from a 1 to a 0

SYS

Which of the following about modulation and demodulation is correct? 
Communications system tend to use a continuous oscillating signal as a carrier for the data as it can go further distances. 

SYS

Which of the following about a shared medium is correct?
Data will be corrupted if there's no access control 

SYS

Types of mediums - shared medium. 
Cable 

SYS

Which of the following is true about a ring network
Packets are passed around the ring until they reach the destination. 

SYS

Which voltages does RS232 use to send bits along a wire? What's the disadvantage of this? 
15v for 0

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