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

Read Full Article
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

Read Full Article
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

Read Full Article
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

Read Full Article
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!

Read Full Article
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

Read Full Article
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.

Read Full Article
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

Read Full Article
A: A Port Security Question

A: A Port Security Question

🕔09:05, 7.Sep 2015

You know the drill. Check this earlier port security question, and then come back here to check your answer and logic. The answer is below the fold. Enjoy!

Read Full Article
Q: A Port Security Question

Q: A Port Security Question

🕔09:05, 3.Sep 2015

The  lobby has a live Ethernet port: it’s time to lock that port down with port security. As usual, this post poses the question, and the next post (which will be linked at the bottom of this one once it’s there)

Read Full Article

Subscribe

Subscribe to our mailing list and get interesting stuff and updates to your email inbox.

Thank you for subscribing.

Something went wrong.

Search

Categories