400-201 Guide

Today Big Q: ccie service provider exam code?

Exam Code: 400-201 (Practice Exam Latest Test Questions VCE PDF)
Exam Name: CCIE SP Written v4.0
Certification Provider: Cisco
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2021 Sep 400-201 certcollection:

Q1. DRAG DROP 

Drag each resiliency mechanism on the left to its corresponding technology on the right. 


Answer: 



Q2. What are three actions that the control word performs in MPLS AToM? (Choose three.) 

A. is used to identify the VC label 

B. is used for padding small packets 

C. preserves the sequence of the transported frames 

D. facilitates the load balancing of AToM packets in the MPLS backbone network 

E. carries control bits of the Layer 3 header of the transported protocol 

F. is used to identify the tunnel label 

Answer: B,C,D 

Explanation: https://ccdewiki.wordpress.com/2013/05/28/control-word-on-atom/ 


Q3. Which are two major changes SyncE offers over traditional Ethernet to make it suitable for clock distribution? (Choose two.) 

A. SyncE introduces the concept of “Boundary Clocks” and “Transparent Clocks” improving network scalability and accuracy of clock synchronization. 

B. Industry standard that guarantee interoperability, since granular details, such as specific field values are specified. 

C. A mandated clock accuracy of 4.6ppm. 

D. The ESMC protocol for clock selection, distribution, management, traceability, and failover. 

E. High-priority synchronization packets so it can continually adjust its own oscillator. 

Answer: C,D 

Explanation: http://www.cisco.com/c/en/us/support/docs/optical/synchronous-optical-network-sonet/23718-timefaq-23718.html 

http://cp.literature.agilent.com/litweb/pdf/5990-4386EN.pdf 


Q4. DRAG DROP 

Drag and drop the OAM protocol listed on the left to the correct standard on the right. Not all options will be used. 


Answer: 



Q5. Refer to the exhibit. 


Customer ABC is peering with two service providers for Internet Access In order to prevent the AS100 from becoming a transit AS between ISP_1 and ISP_2 Which BGP configuration must be applied to achieve this goal? 

A. CE1# 

ip as-path access-list 1 permit ^$ 

route-map LOCAL_ONLY permit 10 

match as-path 1 

router bgp 100 

neighbor 1.1.2.2 route-map LOCAL_ONLY in 

CE2# 

ip as-path access-list 1 permit ^$ 

route-map LOCAL_ONLY permit 10 

match as-path 1 

router bgp 100 

neighbor 1.1.1.2 route-map LOCAL-ONLY in 

B. CE1# 

ip as-path access-list 1 permit ^11$ 

route-map LOCAL_ONLY permit 10 

match as-path 1 

, router bgp 100 

neighbor 1.1.1.2 route-map LOCAL_ONLY out 

CE2# 

ip as-path acctss-list 1 permit ^22$ 

router-map LOCAL.ONLY permit 10 

match as-path 1 

router bgp 100 

neighbor 1.1.1.2 routt-map LOCAL_ONLY out 

C. CE1# 

ip as-path access-list 1 permit ^$ 

route-map LOCAL_ONLY permit 10 

match as-path 1 

router bgp 100 

neighbor 1.1.2.2 route-map LOCAL_ONLY out 

CE2# 

ip as-path access-list 1 permit ^$ 

route-map LOCAL_ONLY permit 10 

match as-path 1 

router bgp 100 

neighbor 1.1.1.2 route-map LOCAL_ONLY out 

D. CE1# 

ip as-path access-list 1 permit ^100$ 

route-map LOCAL_ONLY permit 10 

match as-path 1 

router bgp 100 

neighbor 1.1.2.2 route-map LOCAL_ONLY out 

CE2# 

ip as-path access-list 1 permit ^100S 

route-map LOCAL_ONLY permit 10 

match as-path 1 

router bgp 100 

neighbor 1.1.1.2 route-map LOCALJDNLY out 

Answer: C 


400-201 exams

Renovate ccie service provider:

Q6. Refer to the exhibit. An SP core is running MPLS with OSPF as the IGP used for Loopback propagation. LDP Synchronization is enabled per the given configuration. What will the traffic flow behavior be after a temporary outage event on PE1 Eth0/0? 


A. Permanently through PE1 -> P2 -> PE4 due to lowest path metric. 

B. Initially through PE1 -> P1 -> PE4, then a few seconds later, it will be over PE1 -> P2 -> PE4. 

C. Permanently through PE1 -> P1 -> PE4 due to lowest path metric. 

D. Initially through PE1 -> P2 -> PE4, then a few seconds later, it will be over PE1 -> P1 -> PE4 

Answer: B 


Q7. Refer to the exhibit. 

An engineer observes that the MC-LAG bundle is down on the active aggregation device. Which is the reason for this issue? 


A. The number of configured minimum links is the same of the maximum links available in the bundle. 

B. The ICCP redundancy group is configured with the same system MAC address 

C. The ICCP redundancy group is configured with the system priority. 

D. The number of minimum configured links is greater than the number of links operational in the bundle 

Answer: D 

Explanation: 

https://supportforums.cisco.com/document/9868751/asr9000xr-multichassis-lag-or-mc-lag-mclag-guide130 


Q8. Which OSPF feature allows the router to recompute SPF changes for only the affected part of the SPT? 

A. PRC 

B. fast hellos 

C. BFD across the entire backbone area 

D. incremental SPF 

Answer: D 


Q9. Refer to the exhibit. 


Which piece of information can be derived from this Cisco IOS XR route policy? 

A. If the destination is 227.0 0 3 or 227 0 0 13 the default table will be used for reverse path forwarding 

B. If the destination ranges between 227.0 0.3 and 227 0.0.13. the IPv4 unicast table will be used for reverse path forwarding 

C. If the destination is 227.0.0.3 or 227.0 0.13, the IPv4 unicast table will be used for reverse path forwarding 

D. If the destination ranges between 227.0.0.3 and 227.0.0.13. the multicast default table will be used for reverse path forwarding 

Answer: A 


Q10. A network administrator wants to implement an IP dampening feature for a network. Which parameter identifies how fast the accumulated penalty can decay exponentially? 

A. reuse threshold 

B. suppress threshold 

C. half-life period 

D. maximum suppress time 

Answer: C 

Explanation: Reference: 

http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_pi/configuration/15-sy/iri-15-sy-book/iri-ip-event-damp.html 


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