Questions tagged [half-duplex]

For questions about half-duplex in a computer network, where in a point to point system each party can communicate with the other but not simultaneously; the communication is one direction at a time.

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3answers
583 views

If no CSMA/CD on switches what are they using

As far as I understand, CSMA/CD is an access method to place Ethernet frames on the wires in computer networks. I read everywhere that switches are not using this access method because they are full-...
0
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1answer
64 views

Is there any fixed version of CSMA/CA?

I was trying to understand exact algorithm for Carrier Sense Multiple Access / Collision Avoidance mechanism from Forouzan's book. The book gives very detail explanation of topics. However explanation ...
0
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1answer
22 views

Does Time division duplexing work this way?

During the course of research, I have found a really hard time understanding this short lines below. I will appreciate a short hint or explanation from any expert in this area.
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2answers
943 views

Can a half duplex communicate with a full duplex device

If I have a full duplex relay, can half-duplex devices effectively communicate with this relay? Also, can interference cancellation be applied to the relays or devices in this case? To be more ...
3
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2answers
515 views

On RJ-45/UTP with 2 pairs, (Tx, Rx) which pair will be used in case of half-duplex?

On RJ-45/UTP with 2 pairs, (Tx, Rx) which pair will be used in case of half-duplex? How is decided and conveyed between the two ends, when auto-neg is not enabled?
1
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3answers
356 views

How to connect an old network card (10 Mbps) to a new network (1000Mbps)

I have a system that has an old network card, supporting 10 Mbps Half duplex. Is there a way to "wrap" the system with a router or switch that will allow me to connect it to a 1000 Mbps full duplex ...
2
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1answer
2k views

Has half duplex gigabit Ethernet ever been used?

I am aware that IEEE 802.3 specifies a half duplex mode for gigabit Ethernet that includes things like carrier extension to prevent the collision domain from shrinking due to the higher data rate......
-1
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3answers
10k views

Difference between Half duplex and Full duplex

What is the difference between Half duplex and Full duplex in Transmission mode?
2
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3answers
1k views

CSMA/CD Confusion/Misunderstanding

the CCNA guide states that the CSMA/CD protocol is used to stop devices on the same medium e.g. same wire like on a bus network transmitting simultaneously to avoid collisions. Now please tell me, if ...
3
votes
1answer
282 views

What is 100Mbps in ethernet, is that including both transmit and receiving bps?

I have one doubt, my LAN card is 100Mbps is that including both transmit and receiving bps? OR 100 Mbps of transmitting + 100 Mbps of receiving Kindly someone clarify this.
1
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2answers
1k views

TCP with Half-Open Connection, how to transmit data?

Sender at TCP can not finish transmitting data without receiving ACK packets of transmitted packets. But the situation I want to think is that server closes the connection so the state is 'half-open(...
2
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2answers
877 views

Full and half duplex 100 Mbs on the same switch

At one point, we had a system which performed best when is 100/MB half duplex mode. (purely anecdotal evidence). It was plugged into a switch with other systems running at 100 Mbs full. Seemed ok and ...
4
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1answer
95 views

Auto Sensing in Modern Switching Equipment

Ive noticed that Modern switching equipment will auto sense whether it should be DTE or DCE. It will also auto sense whether the line can be in full duplex mode, or if it must be in half duplex. Ive ...
13
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2answers
4k views

Switchport in half duplex - Download speed suffering but upload was fine

A user had issues with download speed from the Internet. The connection to the Internet is 100 Mbit/s. The user got around 7 Mbit/s downstream and around 80 Mbit/s upstream. I tested from my computer ...