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Question: Traceroute to a subnet broadcast address – what happens?

Question: Traceroute to a subnet broadcast address – what happens?

🕔09:05, 16.Jun 2015

Here’s a new question that makes you think about LAN broadcasts. I made this one up because of a post on the Cisco Learning Network about whether routers always choose to not forward broadcasts, or not. Traditionally, routers have been

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Answers: Serial Link Interview Question

Answers: Serial Link Interview Question

🕔09:05, 22.May 2015

Did you pass the interview? Today’s post lists the answers to the previous interview-style question about serial links. The question posed a scenario in which a serial link wasn’t working, and you had to think about possible root causes. Answer

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Serial Link Interview Question

Serial Link Interview Question

🕔09:05, 19.May 2015

Today’s post poses a #CCNA question about a serial link, in the guise of an interview question. Imagine you walk into the interview, and the interviewer draws a small network diagram, and asks you to diagnose a problem? That’s the

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Answer Part 3: FR Global DLCIs

Answer Part 3: FR Global DLCIs

🕔09:05, 11.May 2015

Today’s post wraps up a longish answer to this earlier open-ended question. But it also explains the difference between local and global DLCIs. Check out these other two parts (part 1 and part 2) of the answer as well. also tackles

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Answer Part 2: More FR Local DLCI

Answer Part 2: More FR Local DLCI

🕔09:05, 8.May 2015

I wrote the original Frame Relay question as a backdrop to discuss FR local and global DLCIs. In this post, I’ll complete an explanation of local DLCIs, and at least introduce the concept of global DLCIs. (See also part I

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Answer Part 1: FR Terms and Local DLCIs

Answer Part 1: FR Terms and Local DLCIs

🕔09:05, 6.May 2015

The previous open-ended question hoped to get you thinking about Frame Relay. It’s a nice question to use for review once you’ve finished reading the Frame Relay chapters of the CCNA books, because it gives you a chance to figure out which

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Question: Frame Relay Terms and Concepts

Question: Frame Relay Terms and Concepts

🕔09:05, 4.May 2015

Imagine two routers, R1 and R2, connected with Frame Relay. How comfortable are you with what happens at Layer 2? Today’s open ended question looks at some of these terms.

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STP Vs. RSTP – Answer 4

STP Vs. RSTP – Answer 4

🕔09:05, 19.Jul 2014

Today’s question once again gets specific about RSTP logic instead of STP. Look back to the original question first before looking at this answer. As usual, the answer post gives the answers, and the reasons why each answer is either

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STP Vs. RSTP – Question 4

STP Vs. RSTP – Question 4

🕔09:05, 14.Jul 2014

This will be the last one of these STP vs. RSTP questions for a while, unless I hear a clamoring for more! This next question follows the same format. One secondary goal of giving you several questions (with 24 different

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STP Vs. RSTP – Answer 3

STP Vs. RSTP – Answer 3

🕔09:04, 14.Jul 2014

Today’s question and answers actually exercise more STP logic than RSTP, with the RSTP materials basically reviewing terms and features. Look back to the original question first before looking at this answer. As usual, the answer post gives the answers,

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