Ucertify offers free demo for 642-885 exam. "Deploying Cisco Service Provider Advanced Routing (SPADVOUTE)", also known as 642-885 exam, is a Cisco Certification. This set of posts, Passing the Cisco 642-885 exam, will help you answer those questions. The 642-885 Questions & Answers covers all the knowledge points of the real exam. 100% real Cisco 642-885 exams and revised by experts!
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Q1. Which of the following can be used by dual-stack service providers supporting IPv4/IPv6 customers with dual-stack hosts using public IPv6 addresses and private IPv4 addresses?
A. NAT64
B. 6RD
C. 6to4 tunnels
D. Carrier-grade NAT
Answer: D
Q2. Referring to the topology diagram show in the exhibit,
Which three statements are correct regarding the BGP routing updates? (Choose three.)
A. The EBGP routing updates received by R1 from R5 will be propagated to the R2, R4, and R7 routers
B. The EBGP routing updates received by R3 from R6 will be propagated to the R2 and R4 routers
C. The EBGP routing updates received by R1 from R5 will be propagated to the R2 and R4 routers
D. The IBGP routing updates received by R3 from R2 will be propagated to the R6 router
E. The IBGP routing updates received by R2 from R1 will be propagated to the R3 router
F. The IBGP routing updates received by R1 from R4 will be propagated to the R5, R7, and R2 routers
Answer: A,B,D
Q3. RAG DROP
Answer:
The amount of time for the penalty to decrease to one-half of its current value - 60 Suppress a route when its penalty exceeds this value - 2400 If a flapping route penalty decreases and falls below this value , the route is unsuppressed - 600 The maximum time a route can be suppressed - 240
Q4. Which two statements regarding the BGP peerlngs are correct? (Choose two)
A. On PE5,the incoming prefixes received from the 192.168.105.51 EBGP peer is limited to a maximum of 10 prefixes
B. On PE5, the "rplin" inbound route policy is applied to the 192.168.105.51 EBGP peer
C. On PE5, the "pass" outbound route policy is applied to the 192.168.105.51 EBGP peer
D. PE5 has one EBGP peer (CE5) and two IBGP peers (P1 and PE6)
E. PE5 has received a total of 60 prefixes from its neighbors
Answer: A,E #show ip bgp
Q5. When implementing IP SLA icmp-echo probes on Cisco IOS-XE routers, which two options are available for IPv6? (Choose two.)
A. flow-label
B. hop-limit
C. DSCP
D. traffic-class
E. TOS
Answer: A,D
Q6. The 224.192.16.1 multicast IP address maps to which multicast MAC address?
A. 01-00-5E-C0-10-01
B. 01-00-5E-40-10-01
C. 01-00-5E-00-10-01
D. 01-00-5E-C0-16-01
Answer: B
Q7. Which statement is correct regarding using the TTL threshold to define the delivery boundaries of multicast traffic?
A. If a packet TTL is less than the specified TTL threshold, the packet is forwarded out of the interface
B. If a packet TTL is greater or equal to the specified TTL threshold, the packet is forwarded out of the interface
C. If a packet TTL is equal to the specified TTL threshold, the packet is dropped
D. When a multicast packet arrives, the TTL threshold value is decremented by 1. If the resulting TTL threshold value is greater than or equal to 0, the packet is dropped
Answer: B
Q8. What is enabled by default on Cisco IOS-XR routers and cannot be disabled?
A. SSH server
B. Multicast routing
C. IPv4 and IPv6 CEF
D. IPv6 routing
E. CDP
F. BFD
Answer: C
Q9. On the PE5 router, which statement Is correct regarding the learned BGP prefixes?
A. The 209.165.201.0/27 prefix is received from the 10.0.1.1 IBGP peer which is a route reflector
B. The 172.16.66.0/24 prefix BGP next-hop points to the route reflector
C. All prefixes learned on PE5 has the default local prefernce value
D. The 209.165.202.128/27 prefix is originated by the 10.0.1.1 IBGP peer
Answer: C #show ip bgp-- check i tag for PE5
Q10. After configuring the tunnel interface as shown in the exhibit, no IPv6 traffic is passed over the IPv4 network.
Which additional configuration is required to pass the IPv6 traffic over the IPv4 network?
A. Configure an IPv4 address on the tunnel0 interface
B. Configure an IPv6 static route to send the required IPv6 traffic over the tunnel0 interface
C. The tunnel destination should be pointing to an IPv6 address instead of an IPv4 address
D. The tunnel0 interface IPv6 address must use the 2002:://16 prefix
Answer: B