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2021 Sep ccie sp written:
Q111. A service provider is designing control policies at the customer edge of the network, in order to prevent usage that exceeds the contracted terms A new client that is contracted for only 2 Gbps is connecting to the service provider edge with a 10 Gbps interface. Which two OoS strategies meet the design goal? (Choose two.)
A. On the customer edge device, enable policing on the interface that is connected to the service provider.
B. On the service provider edge, enable WRED on the customer port.
C. On the customer edge, enable WRED on the interface that is connected to the service provider
D. I On the service provider edge, enable policing on the customer port
E. the customer edge device, enable traffic shaping on the interface that is connected to the service provider.
F. C On the service provider edge, enable traffic shaping on the customer port
Answer: D,E
Q112. DRAG DROP
Drag and drop each fast detection mechanism on the left to its definition on the right.
Answer:
Q113. Refer to the exhibit. Two MPLS TE tunnels are configured with a total bandwidth guarantee of 100 Mbps. However, Tunnel 1 has a requirement to have one-fifth of this total bandwidth. Which two configurations accomplish this goal? (Choose two.)
A. Configure tunnel mpls traffic-eng bandwidth 20000 under the Tunnel 1 interface.
B. Configure bandwidth 20000 under the Tunnel 1 interface.
C. Configure tunnel mpls traffic-eng bandwidth 80000 under the Tunnel 2 interface.
D. Configure bandwidth 80 Mbps under physical interfaces in the path PE1-P2-PE2.
E. Configure bandwidth 20 Mbps under physical interfaces in the path PE1-P1-PE2
F. Configure bandwidth 80000 under the Tunnel 2 interface.
Answer: A,C
Explanation: See Configuration Guide
Q114. When troubleshooting a DoS attack, a support engineer finds a huge number of packets that are destined to one of the core routers interface IP address. By the time the packets reach this core router, they have a TTL of 0. Based on Cisco platform running IOS 15.3S, which technique is most effective in resolving this problem
A. Configure LPTS.
B. Configure an ACL on the core router interface.
C. Configure CoPP on the core router.
D. Configure policing on PE routers.
E. Configure a receive ACL on the core router.
Answer: C
Q115. An engineer is deploying RTBH. What is necessary routing constraint required for successful implementation?
A. The trigger device must have an iBGP session with all the clusters/route reflectors in the autonomous system.
B. The trigger device must redistribute the static route pointing to a null interface into the IGP process.
C. The no ip reachables command must be issued on the PE router interface under attack.
D. The attacker’s destination IP address must be routed to a null interface.
E. The eBGP sessions need to set the next-hop attribute value to the trigger device loopback interface.
Answer: A
Explanation:
http://www.cisco.com/web/about/security/intelligence/ipv6_rtbh.html Old Dumps Actual Test pg no.52 (520 Q)
Latest 400 wood road 201-g snowmass village co 81615:
Q116. Refer to the exhibit. The referenced TE tunnels compete for bandwidth requirements over the limited available bandwidth that is provisioned. Which core MPLS component erases a conflict and provides admission control for any new added TE tunnel?
A. link management
B. link attributes
C. MPLS TE priorities
D. RSVP
Answer: D
Explanation: http://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/5_x/nx-os/mpls/configuration/guide/mpls_cg/mp_te_RSVP.pdf
Q117. 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
Q118. BGP best route selection process is based on what?
A. path attributes
B. lowest cost
C. highest bandwidth
D. lowest delay
E. lowest hop-count
Answer: A
Q119. Which are the two purposes of the MPLS label value 1? (Choose two.)
A. it is used for MPLS OAM packets.
B. it indicates an implicit null label.
C. it is used for VPNv6 packets.
D. it is used to carry the QoS value in the label stack.
E. it indicates an explicit null label.
F. it indicates a router alert label.
Answer: C,F
Explanation: http://www.cisco.com/c/en/us/support/docs/multiprotocol-label-switching-mpls/mpls/4649-mpls-faq-4649.html#qa3
http://www.iana.org/assignments/mpls-label-values/mpls-label-values.xhtml
IPv4 Explicit NULL Label ----> 0
Router Alert Label ----> 1
IPv6 Explicit NULL Label -----> 2
Implicit NULL Label -----> 3
OAM Alert Labe -----> 14
Q120. Refer to exhibit. NAT64 stateless configuration has been applied on RT1 router. The NAT64 prefix stateless used on this scenario is 2001:DB8:2::/96. ‘Host IPv4 only’ needs to test the connectivity with ‘Host IPv6 only’ using a ping command. Which is the correct ping command ‘Host IPv4 only’ should use?
A. ping 27.1.1.10
B. ping 27.1.1.10 source 2001:db8:2::7001:10A
C. ping 2001:db8:2::7001:10A
D. ping 2001:db8:2::112.1.1.10
E. ping 2001:db8:2::27.1.1.10
F. ping 2001:db8:2::1B01:10A
Answer: A