CCNA – Pt. 11

Happy Monday. I’m having a great time and trying to learn a little about electronics. It seems overwhelming but you know, money and time. Thankfully its not that expensive…so far I’m at about 100 dollars into it and have,,, a working guitar and a pedal that will not power on for what ever reason. I think the pedal not powering on is a result of a grounding issue but I could be wrong. The LED doesn’t power and as long its wired right if your getting power at all it should light. The pass through signal works fine though. This is for guitar pedals. I play a lot of doomy type stuff. Basically I like music that sounds like its for stoners in space. I don’t really enjoy marijuana that much but I do for some reason like that type of music. Maybe it was in a past life. Obviously, none of this is going to help me pass CCNA but having a basic grasp on analog circuitry seems like a good idea. So I bought a kit for 50 dollars that’s a clone of a pedal I like and it turns out it has lots of issues. For starters it didn’t ship with a 9v DC in jack that would actually securely fashion to the enclosure. Which tells me, the guy that sells the kit, is kind of just an asshole. He also doesn’t answer questions haha

This is kind of tough because the answer D relies on assuming 100 is the default. Ok, real world you are for sure going to be relying on context clues but its still hard to figure out exactly what’s going on and honestly I think its a mix of “the test” and the fact that I am still learning. The P is confusing

This is interesting to note that some routers appear to show what this in the output text.

Not really much to know here. Other than the “Cisco three tier architecture”? The fuck is this haha

Well thats good to know that it exists. It also makes sense. as in… routers are core, switches are distro and access is users. Amazing.

I got this right but still its good to look at like, wireshark drops

So here is what I think about this. In network administration this could be a helpful defensive tool to learn what people or doing or on the off chance you getting errors with DHCP that seem to be networkwide. This whole concept of hacking being cool because of a TV show is very naïve and frustrating. Your going to want to read this but you will find it also, over the top yet helpful to learn a lot about this from.

Lets define these, I’m not sure what they are.

Lol why the hell would you do that? This makes zero sense, a LAN on fiber. ok. Token ring network makes zero sense in 2021

This is actually interesting. I’m not sure how it works but it does exist and anytime you see Circuit, its guaranteed to be a wan

Synchronous optical networking (SONET) and synchronous digital hierarchy (SDH) are standardized protocols that transfer multiple digital bit streams synchronously over optical fiber using lasers or highly coherent light from light-emitting diodes (LEDs). At low transmission rates data can also be transferred via an electrical interface. The method was developed to replace the plesiochronous digital hierarchy (PDH) system for transporting large amounts of telephone calls and data traffic over the same fiber without the problems of synchronization.

What the fuck, root switch location to be optimized? I’m not sure I understand.

Honestly, this one does not make a ton of sense as it doesn’t say ST “protocol” or anything like that. None of these really say anything about a router location. Which is super weird. and as you can see PVRST isnt even listed on this diagram. It may be a bit of information overkill that we just have to remember. Anyway, here is some for sure southern doom. Maybe I’ll post a loud ab demo of my strat and SG. The squire strat sounds better haha but i still play the SG more? Who knows why. Only god frens

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