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The 642-887, SPCORE, Implementing Cisco Service Provider Next-Generation Core Network Services exam is associated with the CCNP® Service Provider certification. This 90-minute, 65?75 questions exam tests a candidate's knowledge on the concepts and implementation of MPLS, LDP, MPLS-TE and QoS policies from the Service Provider perspective. This exam covers the Cisco IOS, IOS-XE and IOS-XR operating systems. Candidates can prepare for this exam by taking the Implementing Cisco Service Provider Next-Generation Core Network Services (SPCORE) course. The exam is closed book and no outside reference materials are allowed.
The following topics are general guidelines for the content likely to be included on the exam. However, other related topics may also appear on any specific delivery of the exam. In order to better reflect the contents of the exam and for clarity purposes, the guidelines below may change at any time without notice.
The following course is the recommended training for this exam:
- Implementing Cisco Service Provider Next-Generation Core Network Services (SPCORE)
Courses listed are offered by Cisco Learning Partners-the only authorized source for Cisco IT training delivered exclusively by Certified Cisco Instructors. Check the List of Learning Partners for a Cisco Learning Partner nearest you.Exam Number : 642-887 SPCOREAssociated Certifications : CCNP Service ProviderDuration : 90 minutes (65 - 75 questions)Available Languages : EnglishRegister : Pearson VUE
When configuring class-based WRED on Cisco routers, which WRED parameter is notuser configurable on a Cisco IOS XR but is user configurable on a Cisco IOS and IOS XE?
A.the ingress or egress direction where the class-based WRED policy will be applied
B.the maximum threshold
C.the minimum threshold
D.the mark probability denominator
The Cisco IOS and IOS XE qos pre-classify command allows which kind of packet classification on IP packets that are encapsulated with GRE and IPsec?
A.allows for packets to be classified based on the ToS byte values before packetencryption
B.allows for packets to be classified based on the ToS byte values after packet encryption
C.allows for packets to be classified based on the packet payload before packet encryption
D.allows for packets to be classified based on the packet payload after packet encryption
E.allows for packets to be classified based on the packet header parameters other than the ToS byte values after packet encryption
Only based on the Cisco IOS XR policy-map configuration exhibit,
which statement is correct?
A.All DSCP AF41 marked packets will be dropped when the average queue length reaches 12,000 packets.
B.DSCP AF11 marked packets will be randomly dropped when the average queue length reaches 10,000 packets.
C.DSCP AF11 and AF41 marked packets are guaranteed a minimum bandwidth of 1 Mb/s.
D.DSCP AF11 and AF41 marked packets are guaranteed a maximum bandwidth of 1 Mb/s.
What is the correct formula for determining the CIR?
A.CIR = Bc/Tc
B.CIR = Bc x Tc
C.CIR = Tc/Bc
D.CIR = Bc + Be
E.CIR = Tc/(Bc+Be)
F.CIR = (Bc+Be)/Tc
A network operations center requests support to configure a Cisco MPLS TE tunnel on aCisco IOS XR router. Which command sets a specific bandwidth required to thecorresponding Cisco MPLS TE tunnel?
A.rsvp interface interface-path-id bandwidth bandwidth
B.interface tunnel-te tunnel_id ! bandwidth bandwidth
C.interface tunnel-te tunnel_id ! signaled-bandwidth bandwidth
D.mpls traffic-eng auto-bw collect frequency value !
An engineer has been tasked to configure a guaranteed 2 Mbps of bandwidth for outgoingFTP traffic on interface FastEthernet 1/1/1 on Cisco IOS XR. Which method accomplishesthis configuration?
A.configure terminal class-map FTP_CLASS match protocol ftp exit policy-map POLICY_1 class FTP_CLASS bandwidth 2000 exit exit interface FastEthernet 1/1/1 service-policy output POLICY_1 end commit
B.configure terminal class-map FTP_CLASS match protocol ftp exit policy-map POLICY_1 class FTP_CLASS bandwidth 2000000 exit exit interface FastEthernet 1/1/1 service-policy input POLICY_1 end commit
C.configure terminal access-list 100 permit ip any any eq 21 policy-map POLICY_1 match ip access-list 100 bandwidth 2000 exit exit interface FastEthernet 1/1/1 service-policy output POLICY_1 end commit
D.configure terminal policy-map POLICY_1 class FTP_CLASS match protocol ftp bandwidth 2000000 exit exit interface FastEthernet 1/1/1 service-policy input POLICY_1 end commit
Which two network devices are trusted endpoints in a network? (Choose two.)
When implementing CBWFQ, where should Weighted Random Early Detection configuration be applied?
Which configuration fulfills the requirement of configuring LDP with Cisco NonstopForwarding on a router with 5 minutes time to hold the forwarding table information and 1minute retry timer value for an LDP connection?
A.mpls ldp graceful-restart graceful-restart forwarding state-holdtime 5 graceful-restart reconnect-timeout 1 interface GigabitEthernet0/0/0/0 !
B.mpls ldp graceful-restart graceful-restart forwarding state-holdtime 300 graceful-restart reconnect-timeout 60 interface GigabitEthernet0/0/0/0 !
C.mpls ldp nsr graceful-restart graceful-restart forwarding state-holdtime 300 graceful-restart reconnect-timeout 60 interface GigabitEthernet0/0/0/0 !
D.mpls ldp nsr graceful-restart graceful-restart forwarding state-holdtime 5 graceful-restart reconnect-timeout 1 interface GigabitEthernet0/0/0/0 !
According to the Intserv model, which two options are traffic-specific parameters? (Choose two.)
B.calculated average queue size
C.minimum policed unit