Free 642-661 download :cisco CCIP CCIP Configuring BGP on Cisco Routers (BGP) exam
Certification Provider: cisco
Exam Name: 642-661 – CCIP Configuring BGP on Cisco Routers (BGP)
Related Certifications: CCIP
Language: English
Latest update:2010-05-01
Free 642-661 PDF Demo
Download Demo of cisco 642-661 PDF exam for free (in PDF format ) before you decide to purchase it. Thus,you can know better about the quality of our practice exam and then make your right decision.
Free Download:Free 642-661 PDF
642-661 QUESTIONS ANSWERS WITH EXPLANATIONS
Interactive Testing Engine
PREPARATION LABS:20 labs
Duration: 270 Questions
cheap Price : 69.99
Guaranteed pass of CCIP 642-661 exam
What does PassGuide have for you to offer, for cisco 642-661 ?
Practically everything that you will ever need cisco 642-661 is indeed a highly qualified examination, and adequate preparation has to be made too in order to pass the exam. Vigilant exams practice is needed before a professional is qualified to appear in the certification exams. Only with heavy preparation and proper cisco guide certification exams can be attempted and passed.
Choose the CCIP 642-661 program that’s right for you.
you can feel safe with our question and answers that will help you in obtaining your successful completion of your 642-661 exam.
Investing in CCIP certification will help you to head for success
cisco 642-661 SEARCH HELP
Feel free to use search terms below while searching the Net for 642-661 CCIP Configuring BGP on Cisco Routers (BGP) exam:
cisco 642-661 sample questions
cisco 642-661 test answers
cisco 642-661 practice questions
cisco 642-661 vce download
cisco 642-661 discount code
cisco 642-661 guaranteed pass
PassGuide 642-661 exam like testking 642-661 exam pass4sure 642-661 exam transcender 642-661 exam Testinside 642-661 exam and it downlaods from the test center.If you will take 642-661 exam,I suggest you choose PassGuide 642-661.We guarantee that you can pass 642-661 exam at your first try.
Free Download:PassGuide 642-661
IT Certification and Career Paths
642-661 BGP
Configuring BGP on Cisco Routers Exam
Exam Number: 642-661
Associated Certifications: CCIP
Duration: 90 minutes (50-60 questions)
Available Languages: English
Click Here to Register: Pearson VUE
Exam Policies: Read current policies and requirements
Exam Tutorial: Review type of exam questions
Exam Description Exam Topics Recommended Training Additional Resources
Exam Description
The 642-661 BGP exam is a qualifying exam for the CCIP certification. The 642-661 BGP exam tests material covered under the Configuring BGP on Cisco Routers (BGP) v 3.1 course. The BGP exam assesses a candidate’s understanding of the theory of BGP, ability to configure BGP on Cisco IOS routers, and skills with troubleshooting on BGP. As a routing protocol, BGP is one of the underlying foundations of the Internet and new-world technologies.
Exam Topics
The following information provides general guidelines for the content likely to be included on the BGP exam. However, other related topics may also appear on any specific delivery of the exam.
BGP Overview
Introduction to BGP
Given a network scenario, identify appropriate BGP usage and its limitations
BGP Session Establishment
Given a typical BGP network scenario, describe the concept of BGP neighbors and the neighbor session establishment procedures
BGP Route Processing
Given a diagram of an operational BGP network, describe interdomain route processing, route propagation and BGP path selection
Basic BGP Configuration
Given a network consisting of multiple domains, successfully configure BGP
Monitoring and Troubleshooting BGP
Given a configured BGP network, verify proper operation and perform the steps necessary to correct basic BGP configuration errors
Route Selection Using Policy Controls
Multi-Homed BGP Networks
Given a customer scenario where connections to multiple ISPs must be supported, describe the need for influencing BGP route selection
AS-Path Filters
Given a customer scenario where connections to multiple ISPs must be supported, successfully configure BGP to influence route selection using AS path filters
Prefix-List Filters
Given a customer scenario where connections to multiple ISPs must be supported, successfully configure BGP to influence route selection using prefix-list filters
Outbound Route Filtering
Given an operational BGP network, use outbound route filtering to minimize the impact of BGP routing updates on router resources
Route-Maps as BGP Filters
Given a typical BGP network, correctly configure BGP to influence route selection using route maps
Implementing Changes in BGP Policy
Given a typical BGP network, configure the route-refresh feature to minimize the impact of expediting BGP policy updates
Route Selection Using Attributes
BGP Path Attributes
List BGP path attributes and functionality of each attribute Influencing BGP Route Selection with Weights
Given a customer scenario where multiple connections must be supported, successfully configure BGP to influence route selection using the weight attribute
BGP Local Preference
Given a customer scenario where multiple connections must be supported, successfully configure BGP to influence route selection using the local preference attribute
BGP Multi-Exit-Discriminator (MED)
Given a customer scenario where multiple connections must be supported, successfully configure BGP to influence route selection using the Multi-Exit-Discriminator (MED) attribute
BGP Communities
Given a customer scenario where multiple connections must be supported, successfully configure BGP to influence route selection using BGP community attributes
Customer-to-Provider Connectivity with BGP
Customer Connectivity Requirements
Describe the requirements to connect customer networks to the Internet in a service provider environment
Static Routing Toward the Customer
Given a service provider network, implement customer connectivity using static routing
BGP Customer Multi-Homed to a Single Service Provider
Given a customer scenario where multiple connections to a single ISP must be supported, implement customer connectivity with BGP
BGP Customer Multi-Homed to Multiple Service Providers
Given a customer scenario where connections to multiple ISPs must be supported, implement customer connectivity with BGP
BGP Transit Autonomous System
Transit Autonomous System Functions
Describe the function of a transit autonomous system and the need for IBGP IBGP and EBGP Interaction in a Transit AS
Given a transit autonomous system, describe the interaction between EBGP and IBGP in relation to relevant BGP attributes
Packet Forwarding in Transit Autonomous Systems
Describe the function of an IGP in forwarding packets through an autonomous system
Configuring a Transit Autonomous System
Given a BGP network scenario, successfully configure an autonomous system to act as a transit backbone
Monitoring and Troubleshooting IBGP in Transit AS
Given a configured BGP transit network, verify proper operation and perform the steps necessary to correct basic IBGP configuration errors
BGP Route Reflectors
Introduction to Route Reflectors
Describe the function and operation of route reflectors in a BGP environment
Network Design with Route Reflectors
Based upon established route reflector design rules, describe the concept of hierarchial route reflectors and their requirements
Configuring and Monitoring Route Reflectors
Given an existing IBGP network, configure and verify proper operation of route reflectors to modify IBGGP split-horizon rules
Advanced BGP Configuration
Limiting the Number of Prefixes Received from a BGP Neighbor
Given a typical BGP network, successfully configure BGP to limit the number of prefixes received from a neighbor
AS-Path Prepending
Given a typical service provider network with connections to multiple autonomous systems, use AS-Path prepending to influence the return path selected by the neighboring autonomous systems
BGP Peer Group
Given a typical BGP network, use BGP peer groups to share common configuration parameters between multiple BGP peers
BGP Route Flap Dampening
Given a properly configured BGP network, use route flap dampening to minimize the impact of unstable routes
Scaling IGP and BGP in Service Provider Networks
Common Routing Issues in Service Provider Networks
Describe common routing concerns of service provider networks
Optical Networking Designs
Describe the scalability issues of using OSPF and IS-IS as interior gateway protocols in a service provider network and list solutions for each
Scaling BGP in Service Provider Networks
Describe common scalability issues when using BGP in a service provider network and list solutions for each
Cisco 642-661
CCIP Configuring BGP on Cisco Routers (BGP)
Q&A Demo
www.PassGuide.com
(C) Copyright 2006-2009 CertBible Tech LTD,All Rights Reserved.
Important Note
Please Read Carefully
Study Tips
This product will provide you questions and answers carefully compiled and written by our experts. Try to understand the concepts behind the questions instead of cramming the questions.
Go through the entire document at least twice so that you make sure that you are not
missing anything.
Latest Version
We are constantly reviewing our products. New material is added and old material is
revised. Free updates are available for 120 days after the purchase. You should check your
member zone at PassGuide an update 3-4 days before the scheduled exam date.
Feedback
If you spot a possible improvement then please let us know. We always interested in
improving product quality.
Feedback should be send to feedback@passguide.com. You should include the following:
Exam number, version, page number, question number, and your login ID.
Our experts will answer your mail promptly.
Be Prepared. Be Confident. Get Certified.
————————————————————————————————————————-
Sales and Support Manager
Sales Team: sales@passguide.com Support Team: support@passguide.com
———————————————————————————————————————
Copyright
Each pdf file contains a unique serial number associated with your particular name and
contact information for security purposes. So if we find out that a particular pdf file is
being distributed by you, CertBible reserves the right to take legal action against you
according to the International Copyright Laws.
Question：1
Based on the network diagram shown in the exhibit, what is the correct configuration on the customer edge
router used to conditionally announce the customer networks to the ISP?
A. router bgp 65001
! neighbor commands not shown network 192.168.0 mask 255.255.252.0!
ip route 192.168.8.0 255.255.252.0 192.168.8.33
B. router bgp 65001
! neighbor commands not shown
aggregate-address 192.168.8.0 255.255.252.0 summary-only
!
ip route 192.168.8.0 255.255.252.0 192.168.8.33
C. route bgp 65001
! neighbor commands not shown network 192.168.8.0
network 192.168.9.0 network 192.168.10.0 network 192.168.11.0
!
C.ip route 192.168.8.0 255.255.255.0 null0 ip route 192.168.9.0 255.255.255.0 null0 ip route 192.168.10.0 255.255.255.0 null0
ip route 192.168.11.0 255.255.255.0 null0
D. router bgp 65001
! neighbor commands not shown
aggregate-address 192.168.8.0 255.255.252.0 summary-only
!
router ospf 1
network 192.168.8.0 0.0.3.255 area 0
E. router bgp 65001
! neighbor commands not shown
aggregate-address 192.168.8.0 255.255.252.0
!
ip route 192.168.0 255.255.252.0 null0
Answer: A
Question：2
Which two of these statements regarding BGP and admin distances are correct? (Choose two.)
A. BGP admin distance does not influence the path selection algorithm, but does influence if BGP-learned routes are placed in the IP routing table.
B. External BGP routes have a default admin distance of 5.
C. External BGP routes have a default admin distance of 20.
D. Internal BGP routes have a default admin distance of 5.
E. Internal BGP routes have a default admin distance of 20.
F. BGP admin distances do not matter, since all BGP routes are automatically installed in the IP routing table.
Answer: A, C
Question：3
Which BGP router configuration command will enable an ISP edge router to advertise a default route to its BGP
neighbor even if a default route is not present in its BGP table?
A. router(config-router)#neighbor {ip-address} default-originate
B. router(config-router)#network 0.0.0.0
C. router(config-router)#network 0.0.0.0 mask 0.0.0.0
D. router(config-router)#default network 0.0.0.0
Answer: A
Question：4
What is the effect on existing BGP connections when Path MTU (PMTU) discovery is enabled?
A. They dynamically renegotiate the new MTU size.
B. After timing out, they will inherit the configured MTU size.
C. The connections are reset and negotiate MTU size.
D. There is no effect on existing connections.
Answer: D
Question：5
What is a key benefit of implementing conditional route injection in BGP networks?
A. allows the injection of prefix summaries without using the aggregate-address command
B. eliminates the need for static routes to inject a default route
C. provides for link redundancy by conditionally injecting active and standby routes
D. allows the injection of more specific routes based on administrative policies
E. eliminates the complexity of route aggregation when using the network command
Answer: D
Question：6
Refer to the outputs shown in the exhibit. What could be preventing the R1 router from receiving any prefixes from the R2 BGP neighbor?
A. There is a TCP session establishment problem between R1 and R2.
B. The no sync command is missing on R2. C. The no sync command is missing on R1.
D. R2 is using the wrong AS number in its neighbor 192.168.31.2 remote-as statement.
E. R1 is using the wrong AS number in its neighbor 192.168.31.1 remote-as statement.
F. Both R1 and R2 are not using a loopback address to source their BGP packets.
Answer: E
Question：7
Refer to the configuration shown. What could cause the BGP prefixes from the 10.1.1.1 BGP peer to be absent from the routing table?
A. intraconfederation EBGP configurations error
B. autosummarization
C. ebgp-multihop issue
D. BGP synchronization
E. EBGP configurations error
Answer: D
Question：8
A customer multihomed to two ISPs is assigned a different AS number from each ISP. In this case, which BGP
configuration option can the customer use to resolve this issue?
A. set as-path prepend {as-number…}
B. neighbor {ip-address} filter-list {as-path acl number} out
C. neighbor {ip-address} filter-list {as-path acl number} in
D. neighbor {ip-address} local-as {private-as} E. neighbor {ip-address} ebgp-multihip
F. neighbor {ip-address} remove-private-as
Answer: D