Posts Tagged ‘practice’

Sep
07

One of our CCNA students requested some command practice for ICND2 – here is one I put together for him. Please give me feedback in the comments if you find practice tools like this helpful.

ICND2 Command Recall Practice Tool 1

Tags: , , ,

Sep
01

Are you a CCNP or CCIE student looking to challenge your perfect knowledge of Catalyst switchport commands?

Take the latest SWITCH Command Recall exam by clicking the link below. Good luck – and let us know how you scored in the comments area of this post.

Remember to read, AND TYPE, very carefully! I failed my first attempt due to just plain sloppiness. :-(

SWITCH Command Recall Exam – L2/L3 Ports

Tags: , , ,

Aug
14

In the first part of this series, we subdivided the processes of EIGRP into four discrete steps, and detailed troubleshooting the first two. This is taken from the 5-Day CCNP bootcamp:

  • Discovery of neighbors
  • Exchange of topology information
  • Best path selection
  • Neighbor and topology table maintenance

Let us now discuss path selection and maintenance troubleshooting.

We should all remember that we can view the topology table of EIGRP with the command show ip eigrp topology. Here we can see the successor routes (these are the best routes that are placed in the routing table) and we can see the second best routes, the feasible successor routes. These feasible successor routes are the key to the lightening fast convergence that EIGRP can offer us. When a speaker loses its successor, it can quickly install a feasible successor route in its place.

We need to remember the important rule of feasible successors. The advertised distance of the proposed feasible successor must be less than the feasible distance of the current successor route. This is actually a loop prevention mechanism.

Continue Reading

Tags: , , , ,

Jul
25

So many students have written me excited for the upcoming Cisco Certified Design Associate (CCDA) 5 day online bootcamp. In this blog post I want to provide everyone with a preview of some of the hugely valuable content in this course.

Early in the week of the event, we review a network health checklist from Cisco Systems. We take this one step further during the bootcamp  and show you how to actually obtain these measurements without breaking your budget:

  • Ethernet segments should not feature a sustained utilization of 40% or higher
  • All Ethernet segments should be switched – no shared segments (hub-based)
  • No WAN links should feature a sustained utilization of 70% or higher
  • Response times should be generally less than 100 ms
  • LAN response times should generally be 2 ms

Continue Reading

Tags: , ,

Jul
22

A common question for the CCNA Voice candidate is – “Just how can we translate our analog voice waveform into the digitized form that is required for Voice over IP transmission through the converged network?” These active reading questions tell the story – enjoy!

Me Singing in the Shower!

Me Singing in the Shower!

Questions Only

In its natural form, what signal type is the human voice?

To send voice as a series of zeros and ones is known as what type of encoding?

Converting analog voice into digital data begins with taking “snapshots” of voice very frequently. This is called what?

Continue Reading

Tags: , , , ,

Jul
17

For the latest Video Blog – simply click the link below:

The GradedLabs Control Panel

This Video Blog demonstrates and discusses uses for this powerful rack rental tool.

During this video I mentioned that it is now possible to view and download your saved configs, but I forgot to show from where. The location is shown below. Enjoy!

Screen-shot-2010-07-16-at-5.40.33-PM

Tags: , , , , , ,

Jul
11

Enjoy this Video Blog that walks you through subscribing to the blog.ine.com site in Microsoft Outlook.

Watch the Video

Tags: , , ,

Jul
10

Check out the Video Companion for Volume 2 for several hours of added content. Join us as we walk you through our CCIE-level approaches to the new Trouble Tickets of the Volume 2 workbook.

Enjoy!

Tags: , , ,

Jul
02

The best-selling Volume 2 practice lab workbook from INE has been updated with new, 2-hour Troubleshooting sections that mirror the actual Cisco Lab Exam. Labs 1 through 3 are published now to member accounts. More are on the way!

Do you want to watch  Lab 1 TS section solved? Check out the updated Interactive Video Companion! I will be demonstrating my approach to Lab 2 in that product next week.

Enjoy the updates everyone, and as always, thank you so much for choosing INE.

Tags: , , ,

Jul
01

Try these questions on for size! Learn all this and much more in the new QoS class – woohoo!

1. Based on the following configuration, what traffic will be policed?
class-map C_MUSIC
match protocol kazaa2
match protocol napster
!
class-map match-any C_WEB
match protocol http
match class-map C_MUSIC
!
policy-map P_WEB
class C_WEB
police 64000
!
interface serial 0/0
service-policy output P_WEB
A. All Kazaa version 2 traffic is policed
B. All Napster traffic is policed
C. All web traffic is policed
D. All Kazaa version 2, Napster, and web traffic is policed
E. No traffic is policed
2. You are configuring a Cisco Catalyst 3550 switch port to trust CoS markings if, and only if, the marking originated from a Cisco IP Phone. In an attempt to perform this configuration, you enter the mls qos trust device cisco-phone command. However, your configuration does not seem to be working properly. Why is the switch not trusting CoS markings coming from an attached Cisco IP Phone?
A. A Cisco Catalyst 3550 switch supports the mls qos trust device cisco-phone command, but the Cisco Catalyst 2950 does not support this command.
B. The mls qos trust cos command is missing.
C. The mls qos trust extend command is missing.
D. The mls qos cos 5 command is missing.
3. You administer a network that transports both voice and interactive video traffic. Since these traffic types are both latency-sensitive, you decide to implement the following configuration. Which statement is true regarding the configuration?
class-map C_VOICE
match protocol rtp audio
class-map C_VIDEO
match protocol rtp video
!
policy-map P_HIGH_PRIORITY
class C_VOICE
priority percent 15
class C_VIDEO
priority percent 35
class class-default
fair-queue
!
interface serial 0/0
service-policy output P_HIGH_PRIORITY
A. The configuration results in three queues, one for the C_VOICE class, one for the C_VIDEO class, and one queue for the class-default class.
B. The configuration results in two queues, one priority queue and one queue for the class-default class.
C. The class-default class uses FIFO as its queuing mechanism for traffic flows within its queue.
D. The two priority queues use WFQ for queuing traffic within those queues.
4. CB-WRED is configured using the random-detect command. Which two of the following statements are true concerning the random-detect command? (Choose 2)
A. The random-detect command cannot be issued for the class-default class.
B. The random-detect command cannot be issued for the priority class(es).
C. The random-detect command must be issued in conjunction with the bandwidth command (with the exception of the class-default class).
D. The random-detect command should be issued in conjunction with the priority command.
5. Consider the following configuration:
class-map TRANSACTIONAL
match protocol http
!
policy-map CBPOLICING
class TRANSACTIONAL
police 128000 conform-action set-dscp-transmit af11 exceed-action set-dscp-transmit af13 violate-action drop
!
interface serial 0/1
service-policy input CBPOLICING
What type of class-based policing configuration is represented by this configuration?
A. Single rate, single bucket
B. Single rate, dual bucket
C. Dual rate, single bucket
D. Dual rate, dual bucket
6. You configure CB-Shaping by issuing the command shape peak 8000 2000 2000. This configuration shapes to what peak rate?
A. 4000 bps
B. 8000 bps
C. 16000 bps
D. 32000 bps
7. You are configuring Multilink PPP (MLP) as your Link Fragmentation and Interleaving (LFI) mechanism for a WAN link. Identify the correct statements regarding the configuration of MLP. (Choose 2)
A. The configuration of Multilink PPP requires at least two physical links (e.g. two serial interfaces).
B. The IP address is removed from any serial interface that makes up the MLP bundle.
C. Any policy-map that was previously assigned to a physical interface should be reassigned to the multilink interface, that the physical interface is associated with, in order for the policy to take effect.
D. The virtual multilink interface does not use an IP address. Rather, it uses the IP unnumbered feature which allows the multilink interface to share an IP address with the multilink bundle member that has the highest IP address.

1. Based on the following configuration, what traffic will be policed?

class-map C_MUSIC
  match protocol kazaa2
  match protocol napster
!
class-map match-any C_WEB
  match protocol http
  match class-map C_MUSIC
!
policy-map P_WEB
  class C_WEB
    police 64000
!
interface serial 0/0
  service-policy output P_WEB

A. All Kazaa version 2 traffic is policed

B. All Napster traffic is policed

C. All web traffic is policed

D. All Kazaa version 2, Napster, and web traffic is policed

E. No traffic is policed

Answer:

C

Explanation:

The C_MUSIC class-map does not specify the match-any or match-all option. The default is match-all. Therefore, for traffic to be classified in the C_MUSIC class-map, a packet would simultaneously have to be a Kazaa version 2 packet and a Napster packet, which isn’t possible.

The C_WEB class-map uses the match-any option, meaning that traffic will be classified in this class-map if it is HTTP traffic or if it is traffic that was classified in the C_MUSIC class-map. Since, no traffic will be classified in the C_MUSIC class-map, as described above, the only traffic that will be classified by the C_WEB class-map is HTTP traffic.

The policy-map P_WEB is configured to police (i.e. rate limit) traffic classified by the C_WEB class-map to a bandwidth of 64 kbps. (NOTE: The default conform-action is transmit, and the default exceed-action is drop.) Since only HTTP (i.e. web) traffic is matched by the C_WEB class-map, web traffic is the only traffic that is policed. Continue Reading

Tags: , , , ,

Categories

CCIE Bloggers