testinside ccnp ont 642-845 v4.25

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642-845: Optimizing Converged Cisco NetworksProduct Description:
Exam Number/Code: 642-845
Exam Name: CCNP

“CCNP ’s Optimizing Converged Cisco Networks”, also known as 642-845 exam, is a Cisco certification.
Preparing for the 642-845 exam? Searching 642-845 Test Questions, 642-845 Practice Exam, 642-845 Dumps?
With the complete collection of questions and answers, TestInside has assembled to take you through 204 questions to your 642-845 Exam preparation. In the 642-845 exam resources, you will cover every field and category in CCNP helping to ready you for your successful Cisco Certification.

QUESTION 55:
With QOS there are generally two options; the Differentiated Services model and
the Integrated Services model. Which two statements about the DiffServ QoS model
are true? (Select two)
A. Network traffic is identified by class, and the level of service is chosen for each class.
B. The DiffServ model relies on a fairly simple mechanism to provide QoS over a wide
range of equipment.
C. The DiffServ model is more scalable than the IntServ model.
D. The flow-based approach of the DiffServ model is ideal for large scalable

implementations such as the public Internet.
E. DiffServ requires RSVP to set up a path through the network to accommodate the
requested QoS.
F. RSVP enables the DiffServ model to provide end-to-end QoS.

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QUESTION 56:
Certkiller has chosen to use the DiffServ model over the IntServ model. Which two
statements about the DiffServ model are true? (Select two)
A. The primary goal of DiffServ is scalability.
B. The DiffServ field occupies the same eight bits of the MAC header that were
previously used for the ToS field.
C. DiffServ uses the DiffServ field in the MAC header to mark frames into behavior
aggregates (BAs).
D. A class can be identified as a single application, multiple applications with similar
service needs, or be based on the source or destination IP addresses.
E. A drawback of the DiffServ model is that it does not provide backward compatibility
with devices that can only use the ToS field.
F. The first six high-order bits of the DiffServ field are used to identify the Resource
Reservation Protocol (RSVP) value.

testinside ccnp ont 642-845
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