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Questions tagged [osi]

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For questions about the Open Systems Interconnect (OSI) model defined by the International Organization for Standardization (ISO).

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Score of 2
2 answers
119 views

Found this statement in the "The Art of Network Architecture" book, but I can't understand it, as I don't see why routing protocols in the OSI model run on Layer 2 (data link), as the book ...
Score of 4
5 answers
1775 views

I am studying the OSI Model, and to my understanding: a MAC address is needed to transmit a message to a node within the same physical network or to a switch/router. IP addresses are used for globally ...
Score of 1
1 answer
331 views

Hi I am a network engineering beginner learning about the TCP/IP stack in the context of using web services on an embedded system (processor connected to LTE cellular module). I am struggling to ...
Score of 0
1 answer
200 views

The term "throughput" clearly refers to the actual data received in a system. For instance, with a bandwidth of 5MHz and a channel capacity (data rate) of 10Mbps, if the received data is ...
Score of 1
2 answers
231 views

What concrete rule or layer of the OSI model should be used to decide whether a network is a point-to-point network or a broadcast network? A general definition (*) seems clear, but in practice it ...
Score of 0
0 answers
35 views

I thought IPv6 and TCP could be used independently, but IP does not need TCP at all, whereas TCP usually needs IP to function. Is my understanding correct? Does IPv6 need TCP to function? Looking at ...
Score of 0
1 answer
295 views

I am relatively new to networking. I am doubting what happens when the sender sends more data than the advertised window by the receiver. I mean that the receiver advertises the window size based of ...
Score of 0
1 answer
650 views

I was reading about digital transmission, there are many steps namely: Analog to Digital conversion Source coding Channel coding Line coding Pulse shaping Modulation Multiple access techniques ...
Score of -1
1 answer
259 views

Suppose we are designing a network and we want to isolate it from the Internet. Are there any alternatives to the Internet for a local network?
Score of 1
1 answer
1082 views

I'm completely new to the topic, I've read that Ethernet sends Bytes in a Big-Endian way, but that bits are sent with Little-Endian. I've also read that IPv4 uses Big_endian order. So my question is, ...
Score of 1
0 answers
38 views

Unless I am missing something, because switches can be chained together, I am not sure why the network layer is needed. Theoretically, one can dedicate a frame to any MAC address, and assuming there ...
Score of 2
1 answer
203 views

Is there a possibility to use any other two OSI model layers' middle positions? What is the basic concept of switching of packets with MPLS on layer 2.5 of OSI Reference model?
Score of 1
2 answers
1116 views

This is my first question here, It might be a vague or off topic, I apologise in advance, but I am happy to improve it Basically I have a somewhat decent theoretical understanding of the OSI model. ...
Score of 9
7 answers
3687 views

I'm wondering to know how session layer works. In my understanding session layer is to establish active communication sessions between two devices. Based on the OSI layer model, it works layer by ...
Score of 1
1 answer
148 views

In studying network engineering, it is usually taught that network engineers are responsible from physical layer up to transport layer, that is, layer 1-4 only. Obviously, HTTP or HTTPS are off-topic ...

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