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Cisco 642-642
The Cisco 642-642 Implementing Cisco Quality of Service exam from Cisco certification is one of the exams needed for the Cisco Certified Security Professional certification (CCSP) certification. This Cisco 642-642 Implementing Cisco Quality of Service exam is one of the qualifying exams for the Cisco Certified Internetwork Professional, Cisco Certified Voice Professional, Cisco IP Telephony Design Specialist, Cisco IP Telephony Express Specialist, Cisco IP Telephony Operations Specialist and Cisco IP Telephony Support Specialist certifications. This exam measures the measures a candidates understanding and knowledge to configure and troubleshoot Cisco IOS routers running Quality of Service protocols in a Service Provider environment.
It is advised that you combine preparation resources, labs, and practice tests with a solid knowledge of the exam topics. The Cisco 642-642 Implementing Cisco Quality of Service 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 Service Provider and Enterprise environments. The candidate should have a valid CCNA certification as a prerequisite to this exam.
Exam Details:
The Cisco 642-642 Implementing Cisco Quality of Service exam has a difficulty rating of about 3 out of 5 and is thus a moderate exam. The Cisco 642-642 Implementing Cisco Quality of Service exam contains approximately 45-55 questions. You have 90 minutes to complete the Cisco 642-642 Implementing Cisco Quality of Service exam. The questions comprise of multiple-choice single answer and multiple answers, drag and drop, fill in the blank and simulations-based questions. The 642-642 practice exams, 642-642 study guides and 642-642 exam notes encompass the key topics tested in the Cisco 642-642 Implementing Cisco Quality of Service exam. The registration cost for the Cisco 642-642 Implementing Cisco Quality of Service exam is $125 USD.
Key Topics:
The key topics for the Cisco Certified Security Professional certification (CCSP) Certification are that it measures the candidates understanding and knowledge to configure and troubleshoot Cisco IOS routers running Quality of Service protocols in a Service Provider environment. The Cisco 642-642 Implementing Cisco Quality of Service exam covers the, QoS, Cisco QoS, QoS Tools and Architectures, Lan QoS, MQC, QPM, and AutoQoS, Voice Call Admission Control, Traffic Policing and Shaping, Congestion Management and Congestion Avoidance via Drop Policies
It is important that you have knowledge of the IP QoS essentials and you should be able to define the term Quality of Service (QoS) and identify and explain the key steps to implementing QoS on a converged network. You need to be familiar with the IP QoS components and you should be able to list and explain the models for providing Quality of Service on a network as well as explaining the purpose and function of the DiffServ model. You should be able to describe and explain the different per hop behaviors used in DSCP and know the Modular QoS CLI and Auto-QoS. In the Cisco 642-642 Implementing Cisco Quality of Service exam you will be given a network that needs QoS. You thus have to explain how to implement a QoS policy using MQC and explain how AutoQoS is used to implement QoS policy.
It is important that you are able to explain how link layer and network layer markings are used to define service classes and the different applications represented by each of these service classes and be familiar with the Congestion Management Methods. You must be able to describe the drawbacks tail drop as a congestion control mechanism and explain how ECN interacts with WRED in Cisco IOS. It is important that you are able to explain the different link efficiency mechanisms and their function as well as being able to identify the Cisco IOS commands needed to configure and monitor CB header compression. You must be able to explain the QoS requirements of the different application types and explain the best practice QoS implementations and configurations within the campus LAN and the WAN customer edge (CE) and provider edge (PE) routers.
Preparing for the Exam:
There are sufficient 642-642 study materials available on the Internet. These range from the official Cisco Certification Training courses and official Cisco Self Study Training Guides from Cisco Press, to the Testking 642-642 practice exams and Testking 642-642 study guides. Online practice exams and 642-642 braindumps are also available online.
Certification Credits:
When a student passes the Cisco 642-642 Implementing Cisco Quality of Service exam they will be awarded with credit for the Cisco Certified Security Professional certification (CCSP). The successful studnet will have mastered knowledge to configure and troubleshoot Cisco IOS routers running Quality of Service protocols in a Service Provider environment.
