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Troubleshooting Layer 2 Switching: Answers

Troubleshooting Layer 2 Switching: Answers

🕔12:05, 9.Mar 2017

Can you think abstractly about how layer 2 switching works, and how VLANs and trunks impact their forwarding decisions? Or do you need to see the specific configurations to make sense of it? This latest practice question pulls in a

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Troubleshooting Layer 2 Switching

Troubleshooting Layer 2 Switching

🕔12:05, 7.Mar 2017

Layer 2 switching seems easy – but then you must think through how it works in a real network. Applying the ideas proves whether you really understood the concepts or not. This next question gives you that kind of practice

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Answer to Question: Destination MAC Only?

Answer to Question: Destination MAC Only?

🕔12:05, 14.Dec 2016

The previous post posed a question that appeared straightforward – but one that set up a couple of the more common mistakes that people make with the subject of Layer 2 frame forwarding.  The goal was twofold: yet another practice

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Switch Forwarding Question: Destination MAC Only?

Switch Forwarding Question: Destination MAC Only?

🕔12:05, 13.Dec 2016

How does a Layer 2 switch choose where to send a frame? Does it think about more than the destination MAC address? One of the common mistakes videos in the new “CCENT ICND1 100-105 Exam Prep LiveLessons” product talks about

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Dialogue 1 Part 2: Talking ARP

Dialogue 1 Part 2: Talking ARP

🕔09:05, 13.Oct 2015

Do you have all the lingo down to talk to another networker about ARP? Whether in a study session, in a job interview, or just sounding competent around your new colleagues, we all need to master the lingo. Today’s post

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A: Which IPv4 Static Routes Could be Useful?

A: Which IPv4 Static Routes Could be Useful?

🕔09:05, 12.Oct 2015

The previous sample question gave us lots of example static IPv4 routes to think about. The answer and explanation are below the fold, as usual. Ask’em if you’ve got’em!

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Q: Which IPv4 Static Routes Could be Useful?

Q: Which IPv4 Static Routes Could be Useful?

🕔09:05, 8.Oct 2015

This week’s sample question is about static IPv4 routes. The question makes you think not only about syntax, but also about the meaning of the parameters of the ip route command. The wording is a bit tricky because I’ve attempted

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A: Which ARP and Where

A: Which ARP and Where

🕔12:05, 4.Oct 2015

Host A web browsers to server E, which sits on a different subnet. Who ARPs for whom, and where? Check the question, pick your answer, and come back here to check your answer and see the explanation.

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Q: Which ARP and Where

Q: Which ARP and Where

🕔09:05, 1.Oct 2015

Are you an #ARP pretender? ARP is simple. At the same time, ARP can be used as both a testing tool and interview tool determine whether someone really knows how networks work, or if they just read the basics in

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Becoming Conversational with Networking – An Exercise

Becoming Conversational with Networking – An Exercise

🕔11:10, 22.Sep 2015

How do you get comfortable with a new bunch of terms? Well, I’ve been pondering that question, and I had an idea. This blog post begins a little test to try out the idea, and I need your help. Please

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