🔴 Routing vs Switching - CCNA Online Quiz

here we go let me go ahead and uh let's get this party started routing versus switching and the the questions by the way are all based on the exact same topology so i gave you a little more time on this first question because the topology doesn't change [Music] [Music] and wally i see you're asking for the link it just go to oh my gosh it's not shown let me show it real quick it's right here at the very bottom kahoot.it and the game pin is one two five five eight three that my apologies on that oh let me hide my toolbar [Music] [Music] [Music] do [Music] so [Music] all right all right all right now this is a tricky question and i did want to my intention was to give you a little more time with the diagram up front so let me let me bring up the diagram let's talk about this just for a moment we'll all get on the same sheet of music and then we will proceed i do appreciate everybody who's here uh time is the one thing that we all have a limited quantity of and getting better at cisco and better your skills is a fantastic thing so fantastic all right so let me point out this topology so we have pc1 pc2 they are both connected to access ports on this layer two switch they are in different vlans vlan 10 for this port be then 20 for this port and then there's a trunk going between v switch two and switch switch one switch two and these are layer two switches there's no routing here and then there's a axis port in vlan 11. i'm sorry and there's an access port here port 11 that goes to r1 then r1 is connected to server 2 and also do another cloud and there's some other noise up happening up here a lot going on i i know but the cool here's the cool thing let me bring up my camera the cool thing is that this topology will not change for all the questions so you don't have to relearn it and re-memorize it you say okay here's the topology and i need to focus on the question because uh if we had an hour we could sit here and you know study the topology and all the nuances but just having a lay of the land of where the ports are and what the devices are is going to be helpful so for this question which interface ip address should pc1 use as a default gateway i i would with your permission i'd like to walk through this for a moment so pc1 is right here and pc1 has to have a default gateway in its own vlan so the only other device that's in this vlan that has a layer 3 interface that for routing purposes is firewall you might say well kate this is you know ccna isn't security well most networks have firewalls and it's also important just to be aware that in a most most firewalls are routed firewalls so you see a firewall think of it like a layer 3 router with an attitude like i i'm being very choosy about what packets i choose to forward although i can so when you think of a firewall think of a layer 3 routing device which is how it's normally deployed and if there's exceptions that there might be but think of it like a layer 3 routing device so pc1's default gateway would have to be this firewall which is port number eight interface eight so uh which interface ip address should pc1 use the default gateway it would be whatever the iep address is on this interface of the firewall would be the correct default gateway for pc1 now what i'm hoping behind the scenes is i'm hoping that that's one of the answers would be the firewall interface 8 and it is all right so that's probably one of the toughest questions but now that we're warmed up and 17 of you nailed it which is fantastic let's take the next question and here it is good luck everybody [Music] do [Music] [Music] all right so i am an avid watcher of other people's content i'm a a learner i'm studying right now i'm studying when i studying sd-wan with v-smart v-bond v-manage and the v-edges and configuring it all it's a lot of fun but i'm learning from other people i watch videos on youtube i watch other training material to kind of learn it well i was watching network chalk which you know network jack and i have known each other for years and i i love his new content for ccna it's it's amazing that's the only thing to say about it um and as i was watching his content i saw him do a packet tracer lab and one of the outputs one of the commands he issued was show mac dash address dash table which is uh answer i'm looking here it's answered green um and that used to be the actual command like in ios version 11 and 12 and so i see i guess that on one of the router one of the switches he was on an older flavor which is cool um but i wanted to confirm that the current command here is mac space address dash table 47 of you got it correct and here's the good news as you practice more and more with hands-on whether it's package pacer or live gear or what have you you'll become more and more familiar with those commands and be able to better use them when you get to a production environment as well all right let's go ahead and take a look at the next question focused wildcat is at the top of the heap all right here's question three of eight good luck everyone [Music] [Music] so [Music] so [Music] all right all right let's take a look at this let me get out my mouse all right so if pc2 just wanna make sure i do this with you here if pc2 that's this guy this is how i'd approach it in a lab environment as well or an examining environment if pc2 sends an arp request and that's going to be a broadcast that's going to be a layer 3 broadcast actually i take it back it'll be a layer 3 and a layer 2 broadcast so it says for our purposes this layer 2 broadcast gets pumped in switch 1 is going to forward that on all ports associated with vlan 4 including i'm sorry vlan 20 that's blinking number four v120 including this trunk and uh this is also vlan 20 here so that arp request would be learned and the answer should be that switch 1 would learn about that mac address here on port 4 and switch 2 would learn it on port 6. and as i look at my answers here let's hope that's an answer so switch on 4 switch 1 on port 4 switch 2 and port 6. switch one port four switch two on port six oh thank goodness you know i'm grateful for small things all right but that's how i would sort it out like which vlan is it in uh where would that broadcast go and where would each of the switches learn i still remember when i was first learning networking and switching i remember my first trainer back in the nine late 90s yeah i think it was late 90s johnny bass was my first trainer that i went to learn multi-layer switching with almost a decade and a half ago or so anyway um i still remember not realizing that a mac address is learned on more than just one switch so instead of just having a switch and having let me bring up the full screen here instead of having a switch and saying oh just this one switch knows where that mac address is because the source mac address on the device setting frames in it's going to be also downstream devices that are trunking or extending that vlan that are also going to be learning about that client's mac address even though they're not on the same local switch so i yeah like i still remember the moment like oh yeah i get it it's important because the better we understand how networks work and how it operates then when things go south are not working we can use our troubleshooting skills to say well this should be this this should be that why isn't happening and then solve the problem because a lot of engineering a lot of network technician work is troubleshooting so the more familiar you are with it and it's all a skill by the way no one's ever born oh my i'm a genius at this i'm not a genius at anything i'm but i'm pretty darn good at networking and that's because of practice and i want to share that with you and have you get those same types of skills and beyond all right let's continue on with our next question and that next question is this question four of eight we're halfway there or almost halfway there [Music] [Music] so so [Music] all right 15 seconds left i had to throw one zinger in there and all of these statements are true let's just confirm why that is true and let me bring out my pen once again all right the first answer was pc1 can't use r1 as the default gateway so here's pc1 there's r1 the problem is you can't use a default gateway that's in a different vlan can't reach it so pc1 cannot use r1 because r1 is in vlan 20 pc one isn't even on 10. all right good to go second option was pc2 can't reach server 1. why is that okay so here's pc2 here's server one why can't we just route up there this is the 1030 network he's down on vlan 20 which is the 1020 network why can't we have pc2 get to server one and the answer is you know what what i'd love you to do is go ahead and chat in either if you're looking at this after the fact in the comments or if you're watching this live and participating chat in why that is why is it that pc2 can't access server one if you know the answer to that i would love you to post that in and as you're uh thinking about that and putting that in let me go ahead and just get my pin over here there we go and if uh my i have several screens that are open at the moment so i won't peek over there but if you're saying well keith there's no layer 3 routing between vlan 20 and this network up here 10 30 and uh even in vlan 10 vlan 1010 network 1010 you're that's right there's no layer 3 routing this is a layer 2 switch it's got no routing capability and in order to get from one vlan to another from one logical sub network in that vlan to another there has to be a layer three routing function now that layer three routing function could be it could be a multi-layer switch with switch virtual interfaces that'll work it could be a router with physical interfaces it could be router on a stick it could be a firewall that has routing capabilities between those networks but it's got to be some router some device some layer three device that has routing capability all right so that's my answer to uh pc2 can't reach server one let me clear off that screen and the other option with server one can't reach server two for the same reason and that is because we have no routing capability between those networks and then one can't get to cloud two again because we have no no routing in place uh between any of these the only routing uh the only routing we have in fact is between this firewall and network 1030 and network 1010 which is directly connected to and r1 can route between 1040 and it could route between that and this network which is vlan 20 which is 10.20 that's it that's the only router we have there's no routing beyond that between those two networks all right a little bit of a thought-provoking question there hopefully we would never design a network like that but i do want to point out that if you're working with packet tracer and labbing things up this is how you can discover that like you can start building things in packet tracer or physical gear either way and it's like why can't these connect and that process of discovery is rocking because you can go and say well why can't they connect and then walk through the process and that troubleshooting will serve you in spades that means as an old term for it'll be amazing the benefit you can get from building a network why doesn't it work correctly troubleshooting it and then taking that knowledge putting it on your tool belt as a resource and continuing on all right let's take a look at our next question and actually let's take a peek at the scoreboard real quick see who's on top and we've got diligent new on top with 6276 points and that's amazing here we go question five of eight good luck everyone [Music] so [Music] [Music] [Music] all right the firewall issued an arp request which is a broadcast which of the following are true choose to and let's just take a look at that real quick let me bring up the media so if the firewall which is this bad boy right here also um one thing i want to talk to you about regarding firewalls um i had i just took a peek at some of the comments that were saying oh we don't have connectivity or it won't work because of firewall rules and so forth here's the secret with firewalls if a firewall which is a layer 3 device most of the time that forwards packets based on layer 3 routing if it doesn't have a route that traffic's not moving so routes are required as a fundamental element before we start taking a look at access control lists and rules and application inspection that might otherwise deny the traffic so routes first and then the heavier decisions about okay should i forward this or should i not forward it based on where it's coming from so that's something to keep in mind as well all right so the firewall issued an arp request congratulations mr firewall you did a layer two broadcast right there oh it doesn't actually say where it did it hmm i should rewrite that because it could have done an arp request out here trying to resolve the layer three address of the layer to address the server one anyway my intention was here which of the following are true and this mac address of the firewall would be learned on switch 2.7 because the switch as you probably already know is looking at the source layer two addresses and associating those to the port so switch two would say oh i know the firewalls layer two address is associated with this port port number seven and the second true answer would be switch 2 because it's a broadcast switch 2 would be forwarding that over the trunk it'd be tagged for the appropriate vlan which is vlan 10 and then the switch 1 would learn on port 5 the layer 2 address of the firewall and it not only would say hey i know the firewall's mac address on this port but it also say i also noticed in vlan 10. and you might ask yourself the question well how does it know how does it know that it's in vlan 10 and the answer is 802.1 finish the sentence for me 802.1 something on the trunk and 802.1 q is the tagging mechanism we're using so when switch 2 sent that over to switch one it said hey here's this frame here is its vlans associated with which in this case is vlan 10 and the switch receiving that said oh great i know this source mac address is associated with this port and it's also associated with this specific vlan that's how it can keep track and make sure those layer two boundaries of vlans are being reinforced okay uh that was uh that was fun that was fun to create it was also fun to have us go through that exercise i appreciate everybody and i think we have a few more questions and here we go question six of eight good luck [Music] everyone [Music] [Music] so [Music] [Music] so [Music] [Music] [Music] all right 76 correct answers fantastic let's take a look at why that is which port would switch one so switch one is right here a layer two switch which port on that switch would it associate with pc one's default gateway mac address you know what in um you know like in high school and stuff i never really appreciated word problems too much a lot going on there but uh this is definitely kind of a word problem so what we need to find out is whose mac address are we paying attention to it's the default gateways mac address that pc1 is using so if this is pc1 the default gateway would have to be the firewall interface so we're talking about the layer two address of port eight here on the firewall and then where would switch one learn that and switch one as we talked about in the previous question would be learning that on its port five so i think the correct answer here would be switch one port five final answer and uh oh good it's there i'm always i'm always happy when the actual correct answer is there on the screen so that's the process now the goal here isn't for us to memorize um like which port or what but the goal is for us to say to ourselves how well do i know this how do i understand the pieces and also it was like i completely got that wrong i don't even know how that worked hey reach out on discord reach out and say hey can somebody walk me through this or you can hit me up on my channel on this video if you leave a comment just put the time stamp for the video like hey on this question at this time stamp uh i don't understand here's my thoughts on it and can you help me understand why and i'd be happy to do that you can also reach me in discord so the best way to reach me on discord these days is i just do a direct message for me there's a link for discord in the video description i just did a direct message to me i checked that two or three times a week and i always follow up with everybody and it may be just a quick uh response or if you want to have a quick call or conversation if you're patient with me for a few days i respond to everybody and i just love helping people grow and continue and move forward so uh please take advantage of that resource 76 of you got that absolutely correct uh so congrats on that let's see who's on the top of the podium diligent news still up there 86 8 655 points we have two more questions and here is question number seven [Music] [Music] [Music] [Music] so awesome awesome awesome a lot of great answers here i here's how i would approach this if i was asked to choose three and there's only four answers i would look for the one that is not true that's how i would personally attack this if the if three are true i would just look for the one that's not true that we don't have to study all the details so um as we go through these let me point out the one that's not true and i just look at the answer to oh that's true that's true this is not true so here is the scenario pc2 right here it does a ping to server to fantastic um so basically this is tricky because there's a lot of i'm looking at the questions now i'm like wow there are four i have to think through four different possibilities but the one that's not true is that uh it says switch to this guy knows the mac address of interface 14 which is the server's layer 2 interface address on his interface there on port 11. and that's not true switch 2 because server 2 is not in the same broadcast domain not the same vlan will never see the layer two address of server two and that's because it's separated by this layer three interface this layer three device called a router so switch two will never know i mean it can make guesses it could say i think is layer two but switch 2 will never know the layer to address of the server to because they're not the same vlan not the same network and so it won't happen all right let's take a look and see if we have any more questions was that the last one let's see arctic falcon has taken first place i think there's one more question no no pressure but this is for all the money here we go good luck everybody on the final question [Music] so [Music] you [Music] [Applause] [Music] all right two correct answers i debated on whether or not to say how many correct answers there were but i thought man these are pretty tricky so i'm gonna narrow the field the correct answers were the ones that are shown but let's talk about why that is do a little education on the way there so r1 sends an arp request so in an arp request that is a layer 2 broadcast and what switches do when they receive that they're going to forward it on all other ports in the same vlan now it's not going to send it back out that same interface that it learned it on but it's going to send all other ports so there's no other access ports here in vlan 20 i get that number right and we do have a trunk now by default on a trunk it's allowing all vlans by default now you can restrict that that's true but by default they're all allowed so switch 2 would forward that broadcast out port 6 which would cause uh switch one to learn that or receive that on port 5. so now switch 1 knows that r1's 12 interface layer 2 address is whatever it is and it's associated with vlan 20 where it came in on and then it would continue to forward that which means it would forward it out this access port which is also in vlan 20. so the two answers should be that switch 2 will forward it out port 6 and switch 1 will forward it out port 4. and if there were other ports shown and they were in their trunks or the same vlan it would be sent there as well so let's go ahead and close this and let's take a look by the way thank you everybody for participating and studying and getting better it's important you know learning new things that are valuable build good another other things that are valuable and keep building your skills that's the secret mighty tiger nice nice nice with runners up a couple there too and let me go ahead and let me get your feedback as well so go ahead on your apps or the browser go ahead and give me your feedback that'd be awesome that way i know exactly what i can focus on in the future also what i've done is i've collected let me give me some my screens up um i've collected a list of those questions which are most often incorrectly answered and i'm going to make some additional training on those pieces as well to make sure we're solid on it also i've looked at the cahoots that i've done for the last several months and there's a lot of them and they're all in a playlist too so here's some tips that can really help you as you study something so you have your full course of study material whatever that is maybe it's a video series or a book or whatever or both um as you're studying a topic go back and check out first of all subscribe to make sure you can find me easy keith barker here on youtube and then i have a playlist called the uh ccna quizzes and then if you're studying spanning tree or you're studying routing or switching or trunking or layer two security there's cahoots on each one of those and that way you just go back to those kahoots scrub through them say okay boom do i know this do i know this too i know this it's a great way to practice so i would say use this as a resource and come back to it whenever you need to and make sure you understand the technology because the thing is this as a double ccie i have committed myself to perpetual learning that's the secret it's not just i'm gonna learn this information i'll be done no the secret is learn enjoy the process and then keep on going um sean cannell who i i watch a lot of his videos he's think media um great guy uh just willing to share anything he used the phrase the other day that just struck me it was you can't steer a parked car if we're not moving if we're not you know we it's hard to steer a parked car and so we need to keep on studying and keep on learning and keep on growing um so i want to share with you also i'm working on my new digs there's still a lot to do here but it's so great to have you i have a meeting just after with some man discord that i'm going to be meeting with in the past people have congregated in the ccna voice chat room i think that can still happen if you want to i may not be there today but feel free to use that resource uh and as we go a couple things click on subscribe that way you can find me i mean there's a lot of content out there if you want the double ccie who can give you the straight scoop and help reinforce concepts you might be able to find keith barker the og of it click on subscribe that way you can find me a lot easier and then if there's a video that comes up that may not be interesting to you great wait for the next one there's going to be more and more and more all the time um the second thing would be commit if you've been studying for your ccna for more than six months it's time it's time for you to say okay when am i going to take my next exam or when am i going to take that exam and commit to it and and be accountable to somebody you could be accountable to me to oh i just hit the mic sorry uh to a pet uh to somebody on social media to a loved one somebody who is will check on you and say did you do what you said you were going to do like i'm taking another exam this month it's august of 2020 and uh it's nrc and uh i get asked on social because i committed to it are you have you taken it yet no the month's not up but before the end of the month i will be to have taken that exam and i'll give you a quick report on how it goes but i love learning so much fun i wish you the best of success in your studies if we can be helpful here on this channel the keith barker channel please feel free to take advantage of that as well as the free discord server here anything we can help you in getting your career moving forward in the right direction or starting a new career at it uh we're happy to help so i'm looking for my right button over here and i'm gonna say goodbye for now catch y'all later thanks everybody for playing [Music] [Music] [Music] [Music] [Music] you

Channel: Keith Barker

Views: 6,950

Rating: 5 out of 5

Keywords: osi model, mac address, transport layer, internet protocol, tcp/ip model, ip address, computer network, keith barker ccna 200-301, keith barker ccna, cisco ccna, ccna 200-301, cisco certifications, practice exam

Id: Xp3OCHxfSCc

Length: 38min 5sec (2285 seconds)

Published: Sun Aug 16 2020