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Cisco Certified
Internetwork Professional |
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Quality of Service Exam
(QoS
642-641) |
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Exam Number: |
642-641 |
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Associated
Certifications: |
CCIP |
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Available
Languages: |
English |
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Click here to access
Exam 642-641 Practice Tests |
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642-641
Braindumps |
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Exam Description |
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Exam Topics |
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Recommended Training |
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Exam
Description |
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QoS is a qualifying exam for the Cisco
Certified Internetwork Professional CCIP certification. The
QoS exam (642-641) will test materials covered under the
Implementing Quality of Service (IQoS) course. The exam will
certify that the successful candidate has knowledge and
skills necessary to configure and troubleshoot Cisco IOS
routers running Quality of Service protocols in a Service
Provider environment. The exam covers topics on IP QoS,
classification and marking Mechanisms, queuing mechanisms,
traffic shaping and policing mechanisms, congestion
avoidance mechanisms, link efficiency mechanisms, signaling
mechanisms, modular QoS command line interface, and QoS & IP
over ATM.
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Exam
Topic |
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The following information
provides general guidelines for the content likely to be
included on the QoS exam. However, other related topics may
also appear on any specific delivery of the exam. |
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Introduction
to IP Quality of Service |
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Describe
the need for IP QoS. |
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Describe
the Integrated Services model. |
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List the
key benefits and drawbacks of the IntServ model. |
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Describe
the Differentiated Services model. |
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List the
key benefits of the DiffServ model compared to the IntServ
model. |
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Describe
the interoperability between DSCP-based and
IP-precedence-based devices in a network. |
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Describe
the building blocks of IP QoS mechanisms (classification,
marking, metering, policing, shaping, dropping,
forwarding, queuing). |
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List the
IP QoS mechanisms available in the Cisco IOS. |
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Describe
what QoS features are supported by different IP QoS
mechanisms. |
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Classification
and Marking Mechanisms |
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Describe
Policy-based routing and how it can be used to classify
and mark IP packets. |
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Configure
the Policy-based routing mechanism on Cisco routers. |
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Describe
QoS Policy Propagation through BGP and how it can be used
to classify and mark IP packets. |
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List other
mechanisms that also support classification and marking
capabilities (Committed Access Rate, Class-based Marking). |
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Queuing
Mechanisms
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Describe
how queuing works on Cisco routers. |
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Describe
FIFO Queuing (FQ) and its benefits and drawbacks. |
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Describe
Priority Queuing (PQ) including its benefits and drawbacks. |
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Configure
Priority Queuing (PQ) on Cisco routers. |
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Describe
Custom Queuing (CQ) including its benefits and drawbacks. |
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Configure
Custom Queuing (CQ) on Cisco routers. |
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Describe
Weighted Fair Queuing (WFQ) including its benefits and
drawbacks. |
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Configure
Weighted Fair Queuing (WFQ) on Cisco routers. |
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Describe
different distributed Weighted Fair Queuing (dWFQ)
mechanisms available on Cisco IOS routers. |
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Describe
Modified Deficit Round Robin (MDRR) queuing. |
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Describe
IP RTP Prioritization. |
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Configure
IP RTP Prioritization on Cisco routers. |
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Traffic
Shaping and Policing Mechanisms
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Describe
shaping and policing mechanisms available in Cisco IOS. |
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Describe
the benefits and drawbacks of traffic shaping and policing
mechanisms. |
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Describe
Generic Traffic Shaping (GTS) on Cisco routers. |
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Configure
GTS on Cisco routers. |
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Describe
Frame Relay Traffic Shaping (FRTS) and its differences
from GTS. |
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Configure
Frame Relay Traffic Shaping (FRTS) on Cisco routers. |
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Describe
the Committed Access Rate (CAR) mechanism including its
benefits and drawbacks. |
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Configure
Committed Access Rate (CAR) on Cisco Routers. |
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Congestion
Avoidance Mechanisms
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Describe
Random Early Detection (RED). |
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Describe
the Weighted Random Early Detection (WRED) mechanism. |
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Configure
Weighted Random Early Detection (WRED) on Cisco routers. |
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Describe
the Flow-based WRED mechanism. |
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Link
Efficiency Mechanisms
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Describe
payload compression and payload compression algorithms
available on Cisco routers. |
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Describe
header compression and header compression algorithms
available on Cisco routers. |
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Configure
Cisco IOS header compression mechanisms. |
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Describe
Link Fragmentation and Interleaving (LFI). |
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Configure
Link Fragmentation and Interleaving (LFI) mechanisms on
Cisco IOS routers. |
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Signaling
Mechanisms
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Describe
Resource Reservation Protocol (RSVP). |
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Configure
RSVP on Cisco IOS routers. |
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Modular QoS
Command Line Interface
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Describe
the Modular QoS CLI (MQC) concept and its structure. |
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Describe
Modular QoS CLI classification options. |
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Configure
the Modular QoS CLI to perform classification. |
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Describe
Network-based Application Recognition (NBAR). |
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Describe
Modular QoS CLI policy options. |
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Configure
the Modular QoS CLI to perform service policies. |
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QoS and IP
over ATM
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List the
requirements of IP QoS in combination with ATM QoS. |
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Describe
per-VC queuing. |
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Describe
and configure per-VC WRED. |
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Describe
and configure per- VC CB-WRQ. |
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Top |
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Recommended
Training |
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Implementing Cisco MPLS (MPLS) is the recommended
training for this exam. Courses listed are offered by Cisco Learning Partners—the
only authorized source for Cisco IT training delivered
exclusively by Certified Cisco Instructors. |
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Top |
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You will PASS your
Exam 642-641 in your FIRST try! With only 20-30 hours study of
our guides. GUARANTEED! |
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Index |
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640-910 | 642-641
| 642-661 |
642-801 |
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CARLSS
|
CCDA |
CCDP |
CCIP
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CCNA
| CCNP |
CCSP |
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