Free renewal in one year

To meet the demands of customers, our 642-642 exam preparatory files offer free renewal in one year, which might sound incredible but, as a matter of fact, is a truth. As you know, the majority of people are curious about new things, especially things that they have never heard about before. As a result, aperiodic renewal can attract more people to pay attention to our Cisco 642-642 test prep. Of course, our 642-642 study materials, with serving the people as the paramount goal, provide customers whoever make a purchase for our exam files with free renewal for one year mainly in order to make up for what the customers have neglected in the study materials. What's more, our 642-642 exam preparatory files carry out a series of discounts a feedback our customers. In this way, choosing our 642-642 test prep is able to bring you more benefits than that of all other exam files.

This is the era of information technology where all kinds of information is flooded on the Internet (642-642 study materials), making it much more difficult for those who prepare for the tests to get comprehensive understanding about the exam files they are going to choose. However, there is still one kind of 642-642 exam preparatory that is one hundred percent trustworthy for the general public to testify their quality that is our 642-642 test prep files. The reason why I claim our 642-642 study materials with assurance is due to the following aspects.

High guarantee for the personal interests of customers

Our Cisco 642-642 exam preparatory files guarantee personal interests of customers concerning the following two aspects. On the one hand, the payment of our exam files is supported by the authoritative payment platform in the world, which protects the personal information of our customers from leaking out (642-642 test prep materials). On the other hand, customers who have failed in the exam luckily can ask for full refund or changing other exam files for free. Of course, this kind of situation can be rarely seen as few people will not be able to pass the exams under the guidance of our 642-642 study materials.

After purchase, Instant Download: Upon successful payment, Our systems will automatically send the product you have purchased to your mailbox by email. (If not received within 12 hours, please contact us. Note: don't forget to check your spam.)

Enough for the tests after 20 or 30 hours'practice

It is a sort of great magic for those who have bought our 642-642 study materials as many of them can take part in the exam just after 20 or 30 hours'practice. They are quite surprised by the great progress they have made in such a short period. Is it a kind of power granted by God? No, certainly not. The true reason for the speedy improvement is that our 642-642 exam preparatory files are so ingeniously organized that they are suitable for everybody, no matter what kind of degree he or she is in concerning their knowledge of the targeted exams. Therefore, once they have used our Cisco 642-642 test prep materials, they can easily get the hang of the key tested point so that they are more likely get better grades than those without the help coming from our 642-642 study materials.

Cisco Quality of Service (QoS) Sample Questions:

1. When configuring a Cisco Catalyst switch to accommodate an IP phone with an attached PC, it is desired that the trust boundary be set between the IP phone and the switch. Which two commands on the switch are recommended to set the trust boundary as described? (Choose two.)

A) mls qos trust extend [cos value]
B) no mls qos trust dscp
C) switchport priority extend trust
D) mls qos trust cos
E) mls qos cos 5
F) mls qos trust device cisco-phone

2. Which three characteristics best describe a converged network? (Choose three.)

A) the use of a separate high-speed link for bulk traffic to avoid interference with other traffic
B) the separation of the voice and data networks into two networks to ensure voice quality
C) the potential for poor voice quality due to other traffic
D) the random dropping of lower priority traffic to ensure that high-priority traffic gets through
E) the use of overprovisioning to ensure voice quality
F) prioritization and congestion management to ensure voice quality

3. Which three characteristics are drawbacks to the use of a best-effort with over-provisioning backbone design? (Choose three.)

A) Denial of Service attacks on one service can affect all network traffic.
B) The design uses a different over-provisioning ratio for the different traffic classes.
C) It requires complex QoS mechanisms at the network core.
D) It requires complex QoS mechanisms at the network edge.
E) The design costs more to implement than a DiffServ backbone.
F) Unplanned network failures can cause unexpected congestion in the network.

4. According to the best practices, in a service provider network, which statement is true as related to the QoS policy that should be implemented on the inbound provider (P) to provider (P) router link?

A) Because traffic should have already been policed and marked on the upstream ingress PE router, no input QoS policy is needed on the P to P link.
B) Traffic policing should be implemented to rate-limit the ingress traffic into the P router.
C) Class-based marking should be implemented because it will be needed for the class-based queuing that will be used on the P router output.
D) In the DiffServ model, all ingress and egress QoS processing are done at the network edge (for example, PE router), so no input or output QoS policy will be needed on the P to P link.

5. Which two commands are typically applied to the voice traffic class within a policy-map? (Choose two.)

A) compress header ip rtp
B) random-detect ecn
C) random-detect dscp-based
D) bandwidth {kbps}
E) priority {kbps}
F) shape peak {bps}

Solutions: