Ch. 11 – There and Back Again — Quality of Service (QoS)

It’s monday morning which means I have training. I’m not sure how many months I have left of it but its going great. I didn’t get nearly the amount of stuff done that I wanted to last week, run 3 times during the week and then do a 10k. I started strong on Monday then my legs where sore till about Thursday and then didn’t do anything after that. I’ve been sleeping a lot more lately which is good but not great for getting things done. I also realized I forgot chapter 9 for some reason, so I’m going to have to go back and do that

Lets get into some questions:

QoS is quality of service I would guess A B and E

I have no clue but this actually seems like something I should define and since I dont have time to do that right now this is a good place to start getting ready for the gym.

Now that we are back to this we can get on these definitions.

  • Class of Service (CoS) is a 3 bit field in an ethernet frame header when a VLAN tag is present. Quality of Service uses the CoS value to differentiate and police network traffic. This field specifies a priority value between 0 and 7, inclusive, that can be used by Quality of Service (QoS) to differentiate traffic.
  • The Internet Printing Protocol (IPP) is a specialized Internet protocol for communication between client devices (computers, mobile phones, tablets, etc.) and printers (or print servers). It allows clients to submit one or more print jobs to the printer or print server, and perform tasks such as querying the status of a printer, obtaining the status of print jobs, or cancelling individual print jobs.
  • Differentiated Services Code Point (DSCP) is a means of classifying and managing network traffic and of providing quality of service (QoS) in modern Layer 3 IP networks. It uses the 6-bit Differentiated Services (DS) field in the IP header for the purpose of packet classification.
  • Multiprotocol Label Switching is a routing technique in telecommunications networks that directs data from one node to the next based on short path labels rather than long network addresses, thus avoiding complex lookups in a routing table and speeding traffic flows.

I’ll be honest, I know what they are but I have no idea what the answer is.

I’m not exactly clear on what DiffServ is but I should look into that to start with. I have an idea but its not solid and I should have a solid idea

Differentiated services or DiffServ is a computer networking architecture that specifies a simple and scalable mechanism for classifying and managing network traffic and providing quality of service on modern IP networks. Wikipedia

I dont know what D is but I’m not spending time on it unless I see it later on in my studies.

B and C make sense

I have no idea idea. I’m not really sure what this is but it appears to be explained in the answers.

Maybe it would depend on what the UDP traffic is but since it says pick two, 2 and 3

I think…Ill go back and do 9 now.

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