Posts Tagged ‘exam’

Jul
14

Brian Dennis and I attended Cisco Live! – Networkers this week, and both enjoyed the privilege of sitting down to talk privately with Yusuf Bhaiji (Program Manager over the entire CCIE program) and Ben Ng (Program Manager over the CCIE Voice track) for roughly 45 minutes. It was quite an enjoyable and spirited talk, and I believe it benefited both sides – our side to gain a better understanding of why some of the choices have been made, and theirs possibly to see things a bit more ‘through the eyes of the typical hard-studying student’. I would like to take a moment to jot down some of the highlights from our conversation, and then unpack them in a bit more detail, so that you may benefit from the open conversation.

Highlights

I’ll jot down some very simple, high-level topics that were discussed during our conversation, and then unpack them in more detail in the following section.

  • Upcoming changes to every CCIE Lab Exam
    • Protecting the integrity of the CCIE certification
    • Robust, matured results-based grading engine
    • Heuristic logic embedded into task wording
    • Accuracy and detail of lab score reports
    • Cisco’s CCIE Lab Delivery System and virtualization for mobile labs
    • No re-reads
  • CCIE Voice
    • Next blueprint version expectation
    • Topics for current and next blueprint versions
  • CCIE Data Center
    • CCIE Storage grows up
  • Reason behind Cisco.com CCIE Statistics web page being removed

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Jan
31

Today’s CCENT-level challenge involves the methods that are commonly used to describe and compare modern network infrastructures regarding such things as performance and structure.

ICND1-1: What common descriptive  characteristic for a modern network often encompasses a measure of the probability of a network failure called the Mean Time Between Failures or MTBF?

Answer: _________________

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Jan
26

In our recent Implement Layer 2 Technologies series, we examined Q-in-Q tunneling in great detail. In this discussion, I mentioned a big caution about the Service Provider cloud with 802.1Q trunks in use for switch to switch trunking. This caution involved the use of an untagged native VLAN.

You see, this configuration could lead to what is known as the VLAN hopping attack. Here is how it works:

  1. A computer criminal at a customer site wants to send frames into a VLAN that they are not part of.
  2. The evil-doer double tags the frame (Q-in-Q) with the outer frame matching the native VLAN in use at the provider edge switch.
  3. The provider edge switch strips off the outer tag (because it matches the native VLAN), and send this frame across the trunk.
  4. The next switch in the path examines the frame and reads the inner VLAN tag and forwards the frame accordingly. Yikes!

Notice the nature of this attack is unidirectional. The attacker can send traffic into the VLAN, but traffic will not return. Admittedly, this is still NOT something we want taking place!

What are solutions for the Service Provider?

  1. Use ISL trunks in the cloud. Yuck.
  2. Use a Native VLAN that is outside of the range permitted for the customer. Yuck.
  3. Tag the native VLAN in the cloud. Awesome.

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Jan
15

Beginning January 17th, 2011, Cisco will add Layer 2 Switch Troubleshooting to the 2 hour Troubleshooting section of the lab exam. Like the Layer 3 Troubleshooting that you will perform, these switches are emulated devices using Cisco’s IOU product – that stands for IOS on UNIX and is a similar approach to the popular Dynamips platforms. Cisco calls the ability to emulate switches on UNIX – L2IOU.

As you know, INE has been addressing Layer 2 Troubleshooting in all of our CCIE R&S products for a long time – so there will be few modifications that need to be made. I realize that change does cause some level of fear among students studying hard for this exam. I will be sure to schedule a free vSeminar next week to chat about this latest exam format and answer your questions. Watch the blog for the date and time of that vSeminar.

By the way, Cisco announced this change on the Cisco Learning Network this week. Here is the original post.

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Jan
13

Many times, students believe that they could use a bit of a boost when it comes to solving the very complex and difficult Practice Lab Exams featured in our famous Volume II workbook here at INE. To respond to this, Keith Barker and I came up with an idea for a new INE product unlike anything that had been created before.

We created a fully interactive video guide to lab exam strategy and actual solutions for the first five labs of the workbook. But we did not stop there. We also recorded bonus lessons on topic areas that students always seem to want extra guidance with. Such areas as:

  • Am I fast enough when it comes to making configurations?
  • What is the best way to master DOC-CD navigation?
  • What are appropriate strategies for Troubleshooting?
  • What should I do if I am struggling with Redistribution tasks?

Here are some sample lessons from the Interactive Video Companion for Volume II so you can see this remarkable product for yourself. I am also publishing the complete outline here so you can examine that as well.

Samples:

Lab 1 – Layer 2 Private VLANs

Version 4 Challenge – Speed Drill

Version 4 Challenge – MPLS L3 VPN Troubleshooting

The Course Outline:

Lab 1 – Dos and Donts – 20 minutes
Lab 1 – Lab Strategy – 30 minutes
Lab 1 – Backup Link – 20 minutes
Lab 1 – Spanning Tree Manipulation – 10 minutes
Lab 1 – Spanning Tree Security – 15 minutes
Lab 1 – Private VLANs – 30 minutes
Lab 1 – Layer 2 Traffic Engineering – 20 minutes
Lab 1 – OSPF Prefix Adv – 10 minutes

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Jan
03

Continuing my review of titles from Petr’s excellent CCDE reading list for his upcoming LIVE and ONLINE CCDE Bootcamps, here are further notes to keep in mind regarding EIGRP.

About the Protocol

  • The algorithm used for this advanced Distance Vector protocol is the Diffusing Update Algorithm.
  • As we discussed at length in this post, the metric is based upon Bandwidth and Delay values.
  • For updates, EIGRP uses Update and Query packets that are sent to a multicast address.
  • Split horizon and DUAL form the basis of loop prevention for EIGRP.
  • EIGRP is a classless routing protocol that is capable of Variable Length Subnet Masking.
  • Automatic summarization is on by default, but summarization and filtering can be accomplished anywhere inside the network.

Neighbor Adjacencies

EIGRP forms “neighbor relationships” as a key part of its operation. Hello packets are used to help maintain the relationship. A hold time dictates the assumption that a neighbor is no longer accessible and causes the removal of topology information learned from that neighbor. This hold timer value is reset when any packet is received from the neighbor, not just a Hello packet.

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Dec
28

INE is happy to announce a new class dedicated to the recently introduced Cisco Certified Design Expert (CCDE) certification. The first CCDE Practical Bootcamp is to be run on May 1-5th in Chicago, right before the actual CCDE practical exam that is scheduled on May 6th. Our goal was designing a “last-week” refresher and booster class to finalize your CCDE exam preparation. Students are assumed to have solid theoretical knowledge of the exam’s technology base prior to attending. This blog posts gives you a quick overview of the class structure and pre-requisites you should meet in order to benefit the most from this training offer.
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Dec
23

We’d like to send a huge congratulations out to Steven Glowacki who just emailed to thank us for helping him pass his CCIE Voice exam and get the newest number – 27831!

Congratulations Steven!

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Nov
28

Just as with the CCDP, Cisco has delayed the release of the new DESGN exam. The DESGN exam (640-864) is expected to be available on December 16, 2010.

Here are the topics promised fro the new exam:

Describe the Methodology used to design a network
Describe developing business trends
Identify Network Requirements to Support the Organization
Describe the tools/process to characterize an existing network
Describe the top down approach to network design
Describe Network Management Protocols and Features
Describe network structure and modularity
Describe the Network Hierarchy
Describe the Modular Approach in Network Design
Describe network architecture for the enterprise
Design Basic Enterprise Campus Networks
Describe Campus Design considerations
Design the Enterprise Campus Network
Design the enterprise data center
Describe enterprise network virtualization tools
Design Enterprise Edge and Remote Network Modules
Describe the Enterprise Edge, branch, and Teleworker design characteristics
Describe physical and logical WAN connectivity
Design the branch office WAN solutions
Describe Access Network solutions for a remote worker
Design the WAN to support selected redundancy methodologies
Identify Design Considerations for a Remote Data Center
Design IP Addressing and Routing Protocols
Describe IPv4 Addressing
Describe IPv6 Addressing
Identify Routing Protocol Considerations in an Enterprise Network
Design a Routing Protocol Deployment
Design network services
Describe the security lifecycle
Identify Cisco technologies to mitigate security vulnerabilities
Select appropriate Cisco security solutions and deployment placement
Describe high level voice and video architectures
Identify the design considerations for voice/video services
Describe Cisco Unified Wireless Network Architectures and Features
Design wireless network using controllers

Describe the Methodology used to design a network

  • Describe developing business trends
  • Identify Network Requirements to Support the Organization
  • Describe the tools/process to characterize an existing network
  • Describe the top down approach to network design
  • Describe Network Management Protocols and Features

Describe network structure and modularity

  • Describe the Network Hierarchy
  • Describe the Modular Approach in Network Design
  • Describe network architecture for the enterprise

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Nov
27

Worried about topics like EEM, OER, IP SLA, SNMP and the seemingly endless list of Network Services that might appear in your CCIE R&S (or related track) Lab or Written Exam? The latest of the 3 Day Technology Bootcamps arrives just in time for the new year.

The 3-Day Network Services bootcamp will be help Live Online on Dec 27-29, 2010. Class will run each day from 11 AM EST US to approximately 6 PM EST US. We hope to see you in the Live Event, but a Class-On-Demand version will be available the week following.

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