QUESTION 81
A network engineer is configuring RIP as the routing protocol between multiple PEs and CEs. The engineer must avoid advertising the same routes back to their sources. Which action should be performed on the routers to accomplish this task?

A. Configure a different route distinguisher for each prefix.
B. Enable bidirectional forwarding detection on each device.
C. Define VRFs on each device to separate the traffic.
D. Define the site of origin on each interface.

Correct Answer: D

QUESTION 82
Which two features describe TI-LFA? (Choose two.)

A. TI-LFA leverages the post-convergence path that carries data traffic after a failure.
B. Unlike RLFA TI-LFA works without the PQ node and provides double segment failure protection
C. Tl-LFA uses PQ or P and Q nodes on the post-convergence path to compute the backup path.
D. TI-LFA works with point of local repair when the PQ node supports only LDP capability.
E. Post-convergence, T-LFA considers the next-hop neighbor to calculate the backup repair path.

Correct Answer: AC

QUESTION 83
What is the role of NSO?

A. Maintains data storage.
B. Provides public cloud services for customers that need Internet access.
C. Provides network monitoring services for Layer 3 devices.
D. Controls the turn-up of a device.

Correct Answer: D

QUESTION 84
An engineer is configuring IEEE 802.1ad on the access port on a new Cisco router. The access port handles traffic from multiple customer VLANs, and it is expected to mark all customer traffic to the same VLAN without dropping any traffic. Which configuration must the engineer apply?

A. interface gigabitethernet0/0/1
encapsulation dot1q 10
B. interface gigabitethernet0/0/1
ethernet dot1ad uni c-port
C. interface gigabitethernet0/0/1
ethernet dot1ad uni nni
D. interface gigabitethernet0/0/1
ethernet dot1ad uni s-port

Correct Answer: D

QUESTION 85
While an engineer deploys a new Cisco device to redistribute routes from OSPF to BGP, they notice that not all OSPF routes are getting advertised into BGP. Which action must the engineer perform so that the device allows O, OIA, OE1 and OE2 OSPF routes into other protocols?

A. Configure the keyword nssa in the redistribution entry.
B. Configure the keywords internal and external in the redistribution entry.
C. Configure the synchronization keyword in the global BGP configuration.
D. Configure the device to pass only O and E2 routes through it.

Correct Answer: B

QUESTION 86
How does an untrusted interface at the boundary of an administrative domain handle incoming packets?

A. It translates the IP precedence value to the corresponding DSCP value.
B. It forwards only traffic with a DSCP value of 48.
C. It remarks all values to a Cos of 0.
D. It drops all traffic ingressing the network.

Correct Answer: C

QUESTION 87
What must a network engineer consider when designing a Cisco MPLS TE solution with OSPF?

A. The OSPF extensions and RSVP-TE must be enabled on the egress routers.
B. The OSPF extensions and RSVP-TE must be enabled on all routers in the network.
C. OSPF extensions for RSVP-TE are implemented in Type 6, 7, and 8 LSAs.
D. OSPF extensions for RSVP-TE are supported in Area 1.

Correct Answer: B

QUESTION 88
A network architect plans to implement MPLS OAM to provide additional troubleshooting functionality for the NOC team. After analyzing the configuration on the MPLS P/PE nodes, the architect decides to revise the CoPP policies. Which two actions ensure that the new solution is secure? (Choose two.)

A. Allow the TCP and UDP protocols.
B. Allow the UDP protocol only.
C. Allow port 3505 in the outbound direction only.
D. Allow the ICMP protocol only.
E. Allow port 3503 in the inbound direction only.

Correct Answer: BE

QUESTION 89
An engineer is moving all of an organization’s Cisco IOS XE BGP routers to the address-family identifier format. Which command should be used to perform this upgrade quickly with the minimum service disruption?

A. ip bgp-community new-format
B. address-family ipv4
C. bgp upgrade-cli
D. vrf upgrade-cli

Correct Answer: C

QUESTION 90
The network-engineering team of a service provider is integrating several recently acquired networks into a more scalable common Unified MPLS architecture. The new network architecture will support end-to-end VPNv4 and VPNv6 services with these requirements:
1. The IGP of the core layer is IS-IS in Area 0.
2. The IGP of the aggregation layers is OSPF in Area 0.
3. The LDP protocol is used to distribute label bindings within each IGP domain.

Which task must the network engineer perform when implementing this new architecture?
A. Configure the ABR in each IGP domain to preserve next-hop information on all VPNv4 and VPNv6 prefixes advertised by the PE.
B. Configure a BGP session between the ABR routers of each IGP domain to exchange VPNv4 or VPNv6 prefixes.
C. Configure mutual redistribution of each IGP domain’s loopback prefix to provide end-to-end LDP LSP.
D. Configure BGP-LU between ABR routers of each IGP domain to carry MPLS label information in NLRI.

Correct Answer: D

QUESTION 91
Which feature describes the adjacency SID?

A. It applies only to multipoint links.
B. It is locally unique.
C. It applies only to point-to-point links.
D. It is globally unique.

Correct Answer: B

QUESTION 92
How does Cisco MPLS TE use OSPF extensions to allow for optimized transit between a headend router and a destination router?

A. ASBR Summary LSAs share OSPF domain information so that the two routers know how to reach each other during tunnel setup.
B. Opaque LSAs calculate and establish unidirectional tunnels that are set according to the network constraint.
C. Network LSAs share RSVP information to build the tunnel between the two routers.
D. Router LSAs share router link advertisements to each router within the MPLS environment so that tunnels can be built bidirectionally.

Correct Answer: B

QUESTION 93
What are two features of 6RD IPv6 transition mechanism? (Choose two.)

A. It allows dynamic 1:N translation of lPv6 address.
B. It inserts lPv4 bits into an lPv6 delegated prefix.
C. It uses stateless automatic 6to4 tunnels between CE routers and the BR router.
D. It uses a native IPv6-routed network between CE routers and the BR router.
E. It uses stateful automatic 6to4 tunnels between CE routers and the BR router.

Correct Answer: BD

QUESTION 94
Which technology enables the addition of new wavelengths in a fiber-optic network?

A. IPoDWDM
B. CWDM
C. DWDM
D. ROADM

Correct Answer: D

QUESTION 95
What is the primary role of a BR router in a 6rd environment?

A. It embeds the lPv4 address in the 2002::/16 prefix.
B. It provides connectivity between end devices and the lPv4 network.
C. It provides IPv4-in-IPv6 encapsulation.
D. It connects the CE routers with the IPv6 network.

Correct Answer: D

QUESTION 96
Which Cisco software OS uses monolithic architecture?

A. NX-OS
B. IOS XR
C. IOS
D. IOS XE

Correct Answer: C

QUESTION 97
An engineer working for a telecommunication company must configure an OSPF router in a multivendor network so that it performs NSF in the event of a rout processor switchover. Which configuration must the engineer apply?

A. router ospf 1
nsf ietf helper
B. router ospf 1
nsf cisco
C. router ospf 1
nsf cisco helper
D. router ospf 1
nsf ietf

Correct Answer: D

QUESTION 98
How is RSVP used with MPLS traffic engineering tunnels?
A. It reduces the CPU burden when a packet travels through the tunnel.
B. It reserves bandwidth along the path of the tunnel.
C. It assigns a tag to a packet as it travels through the tunnel.
D. It removes and reassigns an MPLS label when the packet enters the tunnel.

Correct Answer: B

QUESTION 99
A router is advertising multiple networks to its BGP neighbor in AS 5200 with peer IP address 1.1.1.1. Which configuration must be applied so that the router permits updates only for networks with a prefix mask length less than or equal to 21?

A. router bgp 5100 neighbor 1.1.1.1 remote-as 5200
neighbor 1.1.1.1 prefix-list SELECTED
ip prefix-list SELECTED seg 10 permit 0.0.0.0/0 ge 8 le 24
B. router bp 5100 neighbor 1.1.1.1 remote-as 5200
neighbor 1.1.1.1 prefix-list SELECTED in
ip prefix-list SELECTED seg 10 permit 0.0.0.0/0 le 21
C. router bp 5100 neighbor 1.1.1.1 remote-as 5200
neighbor 1.1.1.1 prefix-list SELECTED
ip prefix-list SELECTED seq 10 permit 0.0.0.0/0 ge 21
D. router bp 5100 neighbor 1.1.1.1 remote-as 5200
neighbor 1.1.1.1 prefix-list SELECTED in
ip prefix-list SELECTED seg 10 permit 0.0.0.0/0 ge 21 le 24

Correct Answer: B

QUESTION 100
A network engineer must collect traffic statistics for an internal LAN toward the internet. The sample must include the source and destination IP addresses, the destination ports, the total number of bytes from each flow using a 64-bit counter, and all transport flag information. Because of CPU limits, the flow collector processes samples that are a maximum of 20 seconds long. Which two configurations must the network engineer apply to the router? (Choose two.)

A. collect ipv4 protocol
collect ipv4 source address
collect ipv4 destination address
collect application name
collect interface output
match ipv4 source-prefix
match ipv4 destination-prefix
match counter bytes
match flow direction
match transport top-flags
B. collect ipv4 top protocol
collect ipv4 destination address
collect top destination-port
collect application name
collect interface output
collect ipv4 cos
match ipv4 destination
match ipv4 port
match counter packets
match flow direction
match transport top-flags
C. match ipv4 protocol
match ipv4 source address
match ipv4 destination address
match transport destination-port
match interface output
collect ipv4 source mask
collect ipv4 source prefix
collect ipv4 destination prefix
collect ipv4 destination mask
collect transport top destination-port
collect counter bytes long
collect flow direction
collect transport top flags
D. cache timeout active 20
template data timeout 120
E. cache-period timer active 20
data export timeout 2

Correct Answer: CD