Name: Cisco 642-885 Exam
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SKU: 642-885
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Free Cisco 642-885 Exam Actual Questions

The questions for 642-885 were last updated On 23-10-2017

Question #1

Which two specific characteristics categorize traceroute in an IPv6 routing environment? (Choose two.)

ATraceroute can show the path to reach any destination IPv6 address.

BTraceroute returns an error for a link-local IPv6 address.

CTraceroute is based on ICMPv6 Type 1 (Destination Unreachable) reply packets to determine the network path.

DTraceroute is based on ICMPv6 Type 3 (Time Exceeded) reply packets to determine the network path.

ETraceroute is based on ICMPv6 Type 2 (Packet Too Big) reply packets to determine the network path.

FTraceroute for IPv6 implements a backwards compatibility option to provide a detailed report in environments running dual-stack.

Reveal Solution

Correct Answer: A, D

Question #2

Which two options are advantages of an IPv6 dual-stack implementation in an enterprise environment? (Choose two.)

Asimplifies the route redistribution policies complexity

Brequires IPv6-to-IPv4 translation on the uplinks to the service providers

Cprovides built-in support for Kerberos authentication

Ddoes not have to worry about NAT traversal

Esupports multicast properly

Reveal Solution

Correct Answer: D, E

Question #3

In which three cases is a dual-stack IPv6/IPv4 router required? (Choose three.)

Atunnel endpoint routers in the case of IPv6 over GRE

Btransit routers in case of an IPv6 over GRE implementation

C6to4 implementation border routers

D6to4 implementation border and neighboring routers

EPE routers in case of an IPv6 over IPv4 tunnel over MPLS implementation

FPE and P routers in case of an IPv6 over IPv4 tunnel over MPLS implementation

Reveal Solution

Correct Answer: A, C, E

Question #4

Which two methods represent IPv6 tunneling implementations? (Choose two.)

AIPv6 over GRE tunneling

Bmanually configured tunnels

Cautomatic tunnels

D6to4 tunneling

EIPv6 over an IPv4 tunnel over MPLS

Reveal Solution

Correct Answer: B, C

Question #5

Which configuration would an engineer use to exchange IPv6 multicast routes via BGP with a neighbor that does not support the corresponding Multicast SAFI on Cisco IOS XE?

Arouter bgp 100
bgp router-id 209.165.201.10
no bgp default ipv4-unicast
neighbor 2001:DB8::10 remote-as 201
neighbor 2001:DB8::10 update-source GigabitEthernet 0/10
address-family ipv6 multicast
neighbor 2001:DB8::10 activate
network 2001:DB8:CDCD:1::/64
exit-address-family

Brouter bgp 100
bgp router-id 209.165.201.10
no bgp default ipv4-unicast
neighbor 2001:DB8::10 remote-as 201
neighbor 2001:DB8::10 update-source GigabitEthernet 0/10
address-family ipv6
neighbor 2001:DB8::10 translate-update ipv6 multicast unicast
neighbor 2001:DB8::10 activate
no synchronization
exit address-family
address-family ipv6 multicast
neighbor 2001:DB8::10 activate
network 2001:DB8:CDCD:1::/64
exit-address-family

Crouter bgp 100
bgp router-id 209.165.201.10
no bgp default ipv4-unicast
neighbor 2001:DB8::10 remote-as 201
neighbor 2001:DB8::10 update-source GigabitEthernet 0/10
address-family ipv6
neighbor 2001:DB8::10 activate
address-family ipv6 multicast
neighbor 2001:DB8::10 activate
network 2001:DB8:CDCD:1::/64
exit-address-family

Drouter bgp 100
bgp router-id 209.165.201.10
no bgp default ipv4-unicast
neighbor 2001:DB8::10 remote-as 201
neighbor 2001:DB8::10 update-source GigabitEthernet 0/10
address-family ipv6
neighbor 2001:DB8::10 translate-update ipv6 multicast unicast
no synchronization
exit address-family
address-family ipv6 multicast
neighbor 2001:DB8::10 activate
network 2001:DB8:CDCD:1::/64
exit-address-family

Erouter bgp 100
bgp router-id 209.165.201.10
no bgp default ipv4-unicast
neighbor 2001:DB8::10 remote-as 201
neighbor 2001:DB8::10 update-source GigabitEthernet 0/10
address-family ipv6
neighbor 2001:DB8::10 send-label
neighbor 2001:DB8::10 override-capability-neg
neighbor 2001:DB8::10 activate
no synchronization
exit address-family
address-family ipv6 multicast
network 2001:DB8:CDCD:1::/64
exit-address-family

Reveal Solution

Correct Answer: B

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