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 Apr 400-201 exam engine

Q41. Refer to the exhibit. 

A service provider has multiple time sources in the environment for NTP. The time source at 10.0.4.1 is intended to be seen as a primary time source. What command can be issued on PE4 to fix the configuration, ensuring the proper NTP source will be issued? 

A. ntp peer 10.0.4.1 

B. ntp peer 10.0.4.1 prefer 

C. ntp server 10.0.4.1 source GigabitEthernet0/0 

D. ntp server 10.0.4.1 prefer 

Answer:

Explanation: http://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/5_x/nx-os/system_management/configuration/guide/sm_nx_os_cg/sm_3ntp.html#wp1106725 


Q42. QoS is applied on an outgoing interface as shown below: 

What will the QoS result be for egress traffic with an average queue depth of 40 that is marked as DSCP AF32? 

A. Traffic will be dropped with a random rate less than the one defined by MPD. 

B. All traffic will be tail dropped. 

C. Traffic will be dropped with a rate of 1 packet out of 20. 

D. Traffic will be dropped with a rate of 1 packet out of 30. 

Answer:


Q43. Based on the following configuration: 

Which two statements about multicast VPN configuration are true? (Choose two.) 

A. The multicast tree is created based only on the existence of active sources or receivers behind PEs in the ABC VRF. 

B. The service provider core network is required to support SSM. 

C. Multicast needs to be enabled only on ABC VRF and is tunneled to participating PE routers in the ABC VRF. 

D. The SP core network is required in order to enable the BGP Multicast Address Family on all peering. 

E. Multicast is required for the core network in addition to the ABC VRF. 

F. The multicast tree exists regardless of whether there are any active sources or receivers in the ABC VRF. 

Answer: E,F 

Explanation: http://www.ciscopress.com/articles/article.asp?p=32100&seqNum=4 

http://www.cisco.com/en/US/tech/tk828/technologies_white_paper09186a00800a3db6.sht ml 


Q44. On a Cisco ASR 1000 Series, which hardware component is used to build and distribute the forwarding plane information to all line cards? 

A. RP 

B. ESP 

C. SIP 

D. PRP 

Answer:


Q45. In an MPLS VPN environment, the QoS marking over the MPLS backbone must be different from the one that is received from the customer. The forwarding on the egress PE is based on the marking that is set by the ingress PE. Which null label and QoS mode can achieve this? 

A. MPLS explicit null with pipe mode 

B. MPLS implicit null with short pipe mode 

C. MPLS implicit null with uniform mode 

D. MPLS explicit null with uniform mode 

E. MPLS explicit null with short pipe mode 

F. MPLS implicit null with pipe mode 

Answer:

Explanation: 

http://www.cisco.com/en/US/tech/tk828/technologies_q_and_a_item09186a00800a43f5.sht ml#wp27379 

http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/mp_te_diffserv/configuration/15-mt/mp-te-diffserv-15-mt-book/mp-diffserv-tun-mode.pdf 

https://ccdewiki.wordpress.com/2013/05/31/three-qos-models-in-mpls/ 


Up to the minute 400-201 exam topics:

Q46. DRAG DROP 

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

Answer: 


Q47. Refer to the exhibit: 

Which Cisco IOS XE configuration method allocates a label for prefixes with a /32 subnet mask only? 

A. Option 1 

B. Option 2 

C. Option 3 

D. Option 4 

Answer:


Q48. Refer to the exhibit. R1 and R2 are multicast routers running PIM over Serial1/0. The PIM adjacency on R1 is not forming with the given configuration. What command can be entered on R1 to resolve the issue? 

A. no access-list 100 deny 103 any any 

B. no access-list 100 deny udp any anyeq 103 

C. no access-list 100 deny ip any host 224.0.0.1 

D. no access-list 100 deny ip any host 224.0.0.2 

Answer:

Explanation: 

All PIM protocols share a common control message format. PIM control messages are sent as raw IP datagrams (protocol number 103), either multicast to the link-local ALL PIM 

ROUTERS multicast group, or unicast to a specific destination. 

Reference: http://www.metaswitch.com/resources/what-is-protocol-independent-multicast-pim 


Q49. In a multi-VRF scenario using OSPF as PE-CE routing protocol, which Cisco IOS command allows the CE to accepts routes from PE inside of each VRF? 

A. router ospf <process id> vrf<vrf name> capability vrf-lite 

B. router ospf<process id> vrf<vrf name> domain-id <value> 

C. router ospf <process id> domain-id <value> 

D. router ospf <process id> capability vrf-lite 

Answer:


Q50. An engineer needs to implement changes to Router_A during a maintenance window. The engineer first saves the running-configuration of all routers to the local disk0, then applies the required configuration changes. However, during post checks, the engineer realizes the implementation was deployed on Router_B instead. 

Which command should the engineer apply to reverse the changes made during the maintenance window? 

A. configure revert disk0:myconfig-1 

B. configure reload ditk0:myconfig-1 

C. configure copy disk0:myconfig-1 

D. configure replace disk0:myconfig-1 

Answer:

Explanation: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/config-mgmt/configuration/15-sy/config-mgmt-15-sy-book/cm-config-rollback-confirmed-change.html