Answer Posted / trilokchand kilari

Well, none of the above answers talk about QOS,

L2-QOS:
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It is clear that L2 is at MAC layer. In case of MAC level
forwarding such as Bridge connction and a quality of
service need to be assured, The following methods can be
used:

1) MAC filtering (avoiding unnecessary traffic coming from
known MAC sources)
2) VLAN & COS: VLAN will ensure that the traffic is
classified based on various parameters like MAC address,
incoming port, etc... COS: Class Of Service is a filed in
VLAN header. This will be used to prioritize traffic. Later
a QOS scheduler can use the COS filed to qualify the
traffic in to different QOS queues.

L3 - QOS
--------

L3 QOS is required for IP level classification.
Classification can be achieved by Diffserv implementations
that takes many IP parameters in to consideration in
prioritizing traffic. This priority can be set in TOS field
of IP header. This TOS will later be used by Scheduling
process to achieve QOS.

at which layer of osi model does segmentation of a data stream happen?

1287

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Explain which layer is closer to the user?

1073

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What happens from the point an HTTP request is received on a TCP/IP port up until the Page fires the On_Load event?

1119

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What are the 4 layers of tcp ip?

1190

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Explain how can we measure the performance of an ip link?

1225

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How do I find my ip address?

1141

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What protocols fall under the application layer of the tcp/ip stack?

1107

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Is smb secure?

1142

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What is difference between port number and ip address?

1173

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Where is tcp used?

1088

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What is domain name system (dns)?

1209

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How can I see all devices on my network?

1213

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What port can I use instead of 8080?

1078

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How do you check if a port is blocked?

1153

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In the TCP client-servel model, how does the three-way handshake work in opening connection?

1143

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