[Feb-2022] The Best CCNP Enterprise Study Guide for the 300-410 Exam
300-410 certification guide Q&A from Training Expert Test4Cram
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NEW QUESTION 107
Which two protocols work in the control plane of P routers across the MPLS cloud? (choose two)
- A. LDP
- B. LSP
- C. ECMP
- D. MPLS OAM
- E. RSVP
Answer: A,E
NEW QUESTION 108
What is a limitation of IPv6 RA Guard?
- A. It cannot be configured on a switch port interface in the ingress direction
- B. Packets that are dropped by IPv6 RA Guard cannot be spanned
- C. It does not offer protection in environments where IPv6 traffic is tunneled.
- D. It is not supported in hardware when TCAM is programmed
Answer: C
Explanation:
Restrictions for IPv6 RA Guard
The IPv6 RA Guard feature does not offer protection in environments where IPv6 traffic is tunneled.
This feature is supported only in hardware when the ternary content addressable memory (TCAM) is programmed.
This feature can be configured on a switch port interface in the ingress direction.
This feature supports host mode and router mode.
This feature is supported only in the ingress direction; it is not supported in the egress direction.
This feature is not supported on EtherChannel and EtherChannel port members.
This feature is not supported on trunk ports with merge mode.
This feature is supported on auxiliary VLANs and private VLANs (PVLANs). In the case of PVLANs, primary VLAN features are inherited and merged with port features.
Packets dropped by the IPv6 RA Guard feature can be spanned.
Reference:
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipv6_fhsec/configuration/xe-16-10/ip6f-xe-16-10-book/ip6-ra-guard.html#GUID-589AF00C-7499-439F-AD23-51005D61CAB7
NEW QUESTION 109
When provisioning a device in Cisco DNA Center, the engineer sees the error message "Cannot select the device. Not compatible with template.".
What is the reason for the error?
- A. The changes to the template were not committed
- B. The software version of the template is different from the software version of the device
- C. The tag that was used to filter the templates does not match the device tag.
- D. The template has an incorrect configuration.
Answer: C
NEW QUESTION 110
Drag and drop the MPLS terms from the left onto the correct definitions on the right.
Answer:
Explanation:
Explanation
P = Device that forwards traffic based on labels
LSP = Path that the labeled packet takes
CE = Device that is unaware of MPLS labeling
PE = Device that removes and adds the MPLS labeling
NEW QUESTION 111
How are MPLS Layer 3 VPN services deployed?
- A. The import and export RT values under a VRF must always be the same.
- B. The label switch path must be available between the local and remote PE routers.
- C. The RD and RT values under a VRF must match on the remote PE router
- D. The RD and RT values must match under the VRR
Answer: B
Explanation:
Explanation
https://www.cisco.com/c/en/us/td/docs/iosxr/ncs5500/vpn/65x/b-l3vpn-cg-ncs5500-65x/b-l3vpn-cg-ncs5500-
NEW QUESTION 112
Refer to the exhibit.
In which circumstance does the BGP neighbor remain in the idle condition?
- A. if a prefix list is applied on the inbound direction
- B. if prefixes reach the maximum limit
- C. if prefixes are not received from the BGP peer
- D. if prefixes exceed the maximum limit
Answer: D
Explanation:
Explanation
https://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/25160-bgp-maximum-prefix.html#
NEW QUESTION 113
Refer to the exhibit.
ISP 1 and ISP 2 directly connect to the Internet. A customer is tracking both ISP links to achieve redundancy and cannot see the Cisco IOS IP SLA tracking output on the router console. Which command is missing from the IP SLA configuration?
- A. Start-time 00:00
- B. Start-time immediately
- C. Start-time now
- D. Start-time 0
Answer: C
NEW QUESTION 114
Refer to the exhibit.
An engineer configures a static route on a router, but when the engineer checks the route to the destination, a different next hop is chosen. What is the reason for this?
- A. The metric of the OSPF route is lower than the metric of the static route.
- B. Dynamic routing protocols always have priority over static routes.
- C. The configured AD for the static route is higher than the AD of OSPF.
- D. The syntax of the static route is not valid, so the route is not considered.
Answer: C
Explanation:
Explanation
The AD of static route is manually configured to 130 which is higher than the AD of OSPF router which is
110.
NEW QUESTION 115
Which configuration adds an IPv4 interface to an OSPFv3 process in OSPFv3 address family configuration?
- A. Router(config-router)#ospfv3 1 ipv4 area 0
- B. Router(config-router)#ospfv3 3 1
- C. Router ospfv3 1
Address-family ipv4 unicast - D. Router ospf3 1 address-family ipv4
Answer: D
NEW QUESTION 116
Refer to the exhibit.
The network administrator configured VRF lite for customer A.
The technician at the remote site misconfigured VRF on the router.
Which configuration will resolve connectivity for both sites of customer_a?
- A. Option B
- B. Option C
- C. Option A
- D. Option D
Answer: D
Explanation:
From the exhibit, we learned:
+ VRF customer_a was exported with Route target (RT) of 1:1 so at the remote site it must be imported with the same RT 1:1.
+ VRF customer_a was imported with Route target (RT) of 1:1 so at the remote site it must be exported with the same RT 1:1.
Therefore at the remote site we must configure the command "route-target both 1:1" (which is equivalent to two commands "route-target import 1:1" & "route-target export 1:1".
NEW QUESTION 117
Refer to the exhibit.
The output of the trace route from R5 shows a loop in the network. Which configuration prevents this loop?
A)
B)
C)
D)
- A. Option A
- B. Option B
- C. Option D
- D. Option C
Answer: A
NEW QUESTION 118
Refer to the exhibit.
An engineer is trying to generate a summary route in OSPF for network 10.0.0.0/8, but the summary route does not show up in the routing table. Why is the summary route missing?
- A. The summary route is visible only in the OSPF database, not in the routing table.
- B. There is no route for a subnet inside 10.0.0.0/8, so the summary route is not generated.
- C. The summary route is not visible on this router, but it is visible on other OSPF routers in the same area.
- D. The summary-address command is used only for summarizing prefixes between areas.
Answer: B
Explanation:
Explanation
The summary-address is only used to create aggregate addresses for OSPF at an autonomous system boundary.
It means this command should only be used on the ASBR when you are trying to summarize externally redistributed routes from another protocol domain or you have a NSSA area. But a requirement to create a summarized route is:
The ASBR compares the summary route's range of addresses with all routes redistributed into OSPF on that ASBR to find any subordinate subnets (subnets that sit inside the summary route range). If at least one subordinate subnet exists, the ASBR advertises the summary route.
NEW QUESTION 119
Which protocol does MPLS use to support traffic engineering?
- A. Resource Reservation Protocol
- B. Tag Distribution Protocol
- C. Label Distribution Protocol
- D. Border Gateway Protocol
Answer: A
Explanation:
NEW QUESTION 120
statement about route distinguishes in an MPLS network is true?
- A. Route distinguishes make a unique VPNv4 address across the MPLS network.
- B. Route distinguishes are used for label bindings
- C. Route distinguishers allow multiple instances of a routing table to coexist within the edge router.
- D. Route distinguishes define which prefixes are imported and exported on the edge router
Answer: C
NEW QUESTION 121
Refer to the exhibit.
An IP SLA was configured on router R1 that allows the default route to be modified in the event that Fa0/0 loses reachability with the router R3 Fa0/0 interface. The route has changed to flow through router R2. Which debug command is used to troubleshoot this issue?
- A. debug ip routing
- B. debug ip packet
- C. debug ip flow
- D. debug ip sla error
Answer: A
NEW QUESTION 122
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