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Which device converts data from a computer into a form suitable for transmission? (1 Viewer)

BlueGas

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The full question: Which device converts data from a computer into a form suitable for transmission across a LAN?

a) NIC
b) Repeater
c) Switch
d) Router

It can't be router, and I don't think it's NIC. I'm tossing up between Switch and Repeater, if I was to choose an answer, I'd choose c) Switch because most LANs use a switch and a Repeater does transmit data but also extends the range which doesn't seem right for a LAN network, need help on this though.
 

anomalousdecay

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I have learnt about a different type of bus but I can imagine it working in a similar way.

Basically, the switch will convert LAN bus into a physical form using a certain protocol. LAN bus in itself has its own protocol by physical means.

The repeater will just prevent attenuation of the signal over long distances by "amplifying" the signal.

The router deals with traffic and whether the information is accessible.

The NIC runs off LAN bus in computers. Some NICs can run off different buses, but this is determined by the particular use and preferred bus for a particular use. For example, in the automotive industry, enter the world of CAN bus!
 

BlueGas

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I have learnt about a different type of bus but I can imagine it working in a similar way.

Basically, the switch will convert LAN bus into a physical form using a certain protocol. LAN bus in itself has its own protocol by physical means.

The repeater will just prevent attenuation of the signal over long distances by "amplifying" the signal.

The router deals with traffic and whether the information is accessible.

The NIC runs off LAN bus in computers. Some NICs can run off different buses, but this is determined by the particular use and preferred bus for a particular use. For example, in the automotive industry, enter the world of CAN bus!
So what's the answer?
 

anomalousdecay

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I was hoping you could deduce that from what I gave you. What does the switch do? What does this mean? If you can answer those you should know what it is.

I could be wrong in terms of HSC IPT but to my understanding those are what I would say each device does.
 

BlueGas

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I was hoping you could deduce that from what I gave you. What does the switch do? What does this mean? If you can answer those you should know what it is.

I could be wrong in terms of HSC IPT but to my understanding those are what I would say each device does.
Well the definitions you gave are quite different than the definitions I have written in my exercise book. This is what I have written:

Switch: Determines the address of the sender and receiver (next node) from the data packet and sets up a connection between the two. The data packet is then transmitted

Repeater: A repeater is any devices that receives a signal, amplifies it and then transmits the amplified signal down another link. Repeaters are used to increase the physical range of the transmission.

Router: Directs messages over the most efficient path in a network to get to the destination. It uses the IP address of the destination.

NIC: A circuit board installed inside the PC into which the network cable plugs. This will control the sending, receiving and error checking for all data passing through it.

If I was using your definitions, Switch wouldn't be an answer because it doesn't make sense when you look back at the question.
 

Kittyrules

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i would say that the answer as a NIC (aka Network interface card), because it is literally a transmitter. Remember the communications framework diagram thing? The sender would be the computer, the transmitter is the NIC and medium is the LAN cables or whatever.

Switch is a device that sits on the LAN taking in packets and directing them upon a route to their destination. It is part of the 'adressing and rerouting' section of the framework.

Repeater - the definitions that you and anomalousdecay have both seem great. Its just something that makes the signal 'louder', so that other nodes that would not have originaly picked up the signal, would be able to.

Router is like a switch, but it does a little more than just directing packets, it also chooses the most efficient path. for example, when a cable or something is broken, it quickly chooses a different, more efficient path for the packets.

NIC: A circuit board installed inside the PC into which the network cable plugs. This will control the sending, receiving and error checking for all data passing through it.
The NIC is the last device in the PC to deal with data. It does stuff on the transmission layer, meaning that it is the thing actually converting signals!!! It is like an ADC or DAC, making the signals appropriate for the transmission medium.

Now look at the question:
Which device converts data from a computer into a form suitable for transmission across a LAN?
which one is it? (even though ive already told you :p)
 

BlueGas

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i would say that the answer as a NIC (aka Network interface card), because it is literally a transmitter. Remember the communications framework diagram thing? The sender would be the computer, the transmitter is the NIC and medium is the LAN cables or whatever.

Switch is a device that sits on the LAN taking in packets and directing them upon a route to their destination. It is part of the 'adressing and rerouting' section of the framework.

Repeater - the definitions that you and anomalousdecay have both seem great. Its just something that makes the signal 'louder', so that other nodes that would not have originaly picked up the signal, would be able to.

Router is like a switch, but it does a little more than just directing packets, it also chooses the most efficient path. for example, when a cable or something is broken, it quickly chooses a different, more efficient path for the packets.



The NIC is the last device in the PC to deal with data. It does stuff on the transmission layer, meaning that it is the thing actually converting signals!!! It is like an ADC or DAC, making the signals appropriate for the transmission medium.

Now look at the question:


which one is it? (even though ive already told you :p)
Thanks for your help, you clearly explained to me, I would have never thought of the answer being NIC, thank you.
 

BlueGas

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I should have known it was NIC because after reading the question again, it says FROM THE COMPUTER, and the NIC is a circuit board INSIDE THE PC, I feel so dumb right now.
 

anomalousdecay

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I get why I had the discrepancy now. In CAN bus the conversion is made by through the switch (dw about this though). In LAN bus, the ICs (integrated circuit chip) that do data conversion is on the NIC.

I think LAN bus must use multiple ICs on the NIC.
 

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