[2021] 300-515 All-in-One Exam Guide Practice To your 300-515 Exam!
Preparations of 300-515 Exam 2021 CCNP Service Provider Unlimited 72 Questions
NEW QUESTION 36
An engineer is investigating an MPLS LDP issue. Which command should an engineer use on a Cisco IOS XE device to display the contents of the LFIB?
- A. show mpls ldp labels
- B. show mpls forwarding-table
- C. show mpls ldp bindings
- D. show mpls ldp neighbors
Answer: B
Explanation:
Reference:
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/mpls/command/mp-cr-book/mp-s2.html
NEW QUESTION 37
What is the primary function of a VRF on a router?
- A. It enables the router to support multiple separate routing tables, which allows the device to handle overlapping IP addresses.
- B. It enables a router to configure VLANs locally, which provides segregation between networks.
- C. It enables a router to run BGP and a distance vector routing protocol at the same time, which allows it to serve as a VPN endpoint between remote sites.
- D. It enables the router to provide faster switching through the network by using labels to identify the input and output interfaces for neighbor routers.
Answer: A
NEW QUESTION 38
Drag and drop the EVPN components from the left onto the correct planes on the right.
Answer:
Explanation:
Reference:
https://www.cisco.com/c/dam/m/en_us/network-intelligence/service-provider/digital-transformation/ knowledge-network-webinars/pdfs/0420-epn-ckn.pdf slide 8
NEW QUESTION 39
Which is the primary function of a MPLS L3 VPN route target?
- A. It imports and exports identified routes into selected VRFs.
- B. It imports the external routes it identifies into VRFs that support Internet traffic
- C. It supports QoS by classifying traffic by file type when it applies MPLS EXP bits to each packet.
- D. It uniquely identifies NLRIs that have the same numeric value.
Answer: A
NEW QUESTION 40
Refer to the exhibit.
Drag and drop the EVC configuration items from the left onto the correct descriptions on the right.
Answer:
Explanation:
NEW QUESTION 41
Refer to the exhibit.
Which statement describes the result of this configuration?
- A. R1 redistributes BGP routes into the OSPF process of VRF custabc as OIA routes.
- B. R1 mutually redistributes routes between BGP 65001 and the OSPF process of VRF custabc.
- C. R1 redistributes BGP routes into the OSPF process of VRF custabc as E2 routes.
- D. R1 redistributes BGP routes into the OSPF process of VRF custabc as E1 routes.
Answer: D
NEW QUESTION 42
You are writing the requirements for an MPLS L3VPN environment that uses MP-BGP between PE routers.
In this environment, route targets and route distinguishers need to be advertised between the PE routers.
Which three operations meet these requirements? (Choose three.)
- A. full mesh of IBGP sessions
- B. mandatory creation of PE-to-PE BGP sessions between the outgoing interface IP addresses
- C. creation of PE-to-PE BGP sessions between loopback IP addresses
- D. full mesh of EBGP sessions and partial mesh of IBGP sessions
- E. advertisement of standard communities, enabled on the PE-to-PE BGP neighbors
- F. advertisement of extended communities, enabled on the PE-to-PE BGP neighbors
Answer: A,C,F
Explanation:
Section: Layer 3 VPNs
NEW QUESTION 43
What do routers on the network use to avoid routing loops when OSPF is running as the PE-CE routing protocol on a service provider network?
- A. the DN bit with type 3, 5, or 7 LSA
- B. the domain tag for type 2 LSA
- C. the AS-Override feature
- D. sham links to create a super backbone over the service provider network
Answer: A
NEW QUESTION 44
Refer to the exhibit.
Drag and drop the EVC configuration items from the left onto the correct descriptions on the right.
Answer:
Explanation:
NEW QUESTION 45
Refer to the exhibit.
What is the effect of this configuration?
- A. Router 1 accepts multicast routes with a tag of 12:1
- B. An LSP virtual interface tunnel is created.
- C. A Cisco MPLS TE tunnel is generated with 192.168.1.2 as the source IP address of router 1.
- D. The mroute table is cleared.
Answer: A
NEW QUESTION 46
A network engineer is implementing Layer 3 MPLS VPNs on Cisco IOS/IOS XE PE routers. Which PE-to-CE routing protocol requires a separate routing process to be created for each VRF?
- A. OSPF
- B. RIPv2
- C. EIGRP
- D. BGP
Answer: A
NEW QUESTION 47
Which optional information can be included with an IPv6 ping to support the troubleshooting process?
- A. destination MAC address
- B. IPv6 hostname
- C. source MAC address
- D. IPv4 IP address
Answer: B
Explanation:
Reference:
<https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipv6/configuration/xe-3s/ipv6-xe-36s-book/ip6- mng-apps.html>
NEW QUESTION 48
Refer to the exhibit.
A network operator is implementing EVPN IRB on PE1. Which two command placements enable the advertisement of Type 2 routes and what information do Type 2 routes contain? (Choose two.)
- A. Type 2 routes contain inclusive source-specific multicast route information.
- B. Type 2 routes contain MAC/IP information.
- C. The operator adds in "host-routing" under the BVI651 interface.
- D. The operator adds in "host-routing" under the VRF EVPN.
- E. Type 2 routes contain Ethernet Auto-Discovery information.
Answer: B,C
Explanation:
Reference:
https://www.cisco.com/c/en/us/td/docs/iosxr/ncs5500/vpn/61x/b-ncs5500-l2vpn-configuration- guide-61x/b-ncs5500-l2vpn-configuration-guide-61x_chapter_01010.html
NEW QUESTION 49
Refer to the exhibit.
Which statement about this output is true?
- A. The adjacent router is the egress LSR and has mpls ldp explicit-null configured.
- B. The adjacent LSR router configured mpls label range 0.
- C. The router IP 192.168.1.2 sent an implicit null, and the output is from the penultimate LSR.
- D. The zero in the second column is the normal behavior of an egress router LSR.
Answer: A
NEW QUESTION 50
What is a requirement to share VRF reachability information to all members of a VPN when using IPv6?
- A. All PEs must have the same VRFs configured.
- B. PE and CE routers must be running BGP as the PE-CE routing protocol
- C. PE routers must have MPLS disabled and be running MP-BGP between all P and PE routers.
- D. PE routers must be running MP-BGP and bgp default ipv4-unicast must be disabled
Answer: A
NEW QUESTION 51
Refer to the exhibit.
Which statement about this configuration is true?
- A. Router 1 will accept multicast routes with a route-target of 12:1.
- B. Router 1 has statically defined thresholds for data MDT.
- C. 192.168.1.2 must be reachable by all routers participating in the mvpn-intranet MVRF.
- D. The MVRF must be configured on each router on the customer and service provider networks.
Answer: A
NEW QUESTION 52
Refer to the exhibit.
If the two devices are operating normally, which two conclusions can you draw from this configuration?
(Choose two.)
- A. The PE-CE routes between the devices are being exchanged by OSPF
- B. CE1 must use OSPF to establish a neighbor relationship with PE1.
- C. PE1 labels the routes it learns from CE1 with the route-target 222:2 and shares them with its VPNv4 peers.
- D. CE1 is supporting CSC.
- E. PE1 labels the routes it learns from CE1 with the route-target 111:1 and shares them with its VPNv4 peers.
Answer: A,B
NEW QUESTION 53
Refer to the exhibit.
PE1 and PE2 are exchanging VPNv4 routes for CE1 and CE2, and PE3 contains the default route to the internet. If the three devices are operating normally, which two conclusions describe this configuration?
(Choose two.)
- A. Only the CE2 VRF can access the default route provided by the Internet VRF.
- B. All three routers must be running a distance-vector routing protocol.
- C. The CE1 and CE2 VRFs can access the default route provided by the Internet VRF.
- D. The CE1 and CE2 VRFs can exchange routes only between their respective VRFs on PE1 and PE2.
- E. All three routers must be running MP-BGP.
Answer: D,E
NEW QUESTION 54
While troubleshooting an AToM L2VPN service, a network consultant notices that the AC Layer 2 encapsulations are different. Which action should the consultant take in order to make the MPLS L2VPN work?
- A. tag-rewrite on the ingress and egress PE router
- B. nonrouted interworking setup to properly translate only the Layer 2 information from the AC
- C. interworking IP configuration on the last PE router before label disposition
- D. interworking IP configuration on both the AC terminations on the PEs
Answer: D
Explanation:
Reference:
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/mp_l2_vpns/configuration/xe-16-11/mp-l2-vpns- xe-16-11-book/l2vpn-interworking.html
NEW QUESTION 55
With Layer 3 MPLS VPN implementations on Cisco IOS XR PE routers, an interface is assigned to a VRF using the vrf command in which configuration mode?
- A. RP/0/RP0/CPU0:PE(config-bgp)#
- B. RP/0/RP0/CPU0:PE(config-bgp-af)#
- C. RP/0/RP0/CPU0:PE(config-vrf)#
- D. RP/0/RP0/CPU0:PE(config-if)#
Answer: D
Explanation:
Section: Layer 3 VPNs
Explanation/Reference: https://www.cisco.com/c/en/us/td/docs/ios_xr_sw/iosxr_r3-7/mpls/configuration/guide/ gc37v3.html
NEW QUESTION 56
An engineer needs to improve MPLS network management by implementing a set of tools to support the NOC engineers in troubleshooting network failures. Which feature should the engineer implement to check the connectivity of the MPLS LSP between the ingress and egress PE routers?
- A. extended ping
- B. MPLS OAM
- C. LDP autodiscovery
- D. MPLS-TP
Answer: B
Explanation:
Reference:
https://www.cisco.com/c/en/us/td/docs/routers/asr9000/software/asr9k_r5-3/mpls/configuration/guide/b-mpls-cg53x-asr9k/b-mpls-cg53x-asr9k_chapter_01000.html
NEW QUESTION 57
Refer to the exhibit.
PE1 and PE2 are exchanging VPNv4 routes for CE1 and CE2, and PE3 contains the default route to the internet. If the three devices are operating normally, which two conclusions describe this configuration? (Choose two.)
- A. Only the CE2 VRF can access the default route provided by the Internet VRF.
- B. All three routers must be running a distance-vector routing protocol.
- C. The CE1 and CE2 VRFs can access the default route provided by the Internet VRF.
- D. The CE1 and CE2 VRFs can exchange routes only between their respective VRFs on PE1 and PE2.
- E. All three routers must be running MP-BGP.
Answer: D,E
NEW QUESTION 58
In an Ethernet Virtual Circuit environment, which restriction do bridge domains have when STP is running?
- A. Bridge domains must be mapped to a different VLAN.
- B. The STP mode must be MSTP
- C. The STP mode must be RSTP or PVST+
- D. Bridge domains must belong to different MST instances.
Answer: B
Explanation:
Reference:
https://www.cisco.com/c/en/us/td/docs/routers/asr920/configuration/guide/ce/b_ce_xe-313s- asr920-book/b_ce_xe-313s-asr920- book_chapter_01.html#reference_770349446ED24E83821EF701DDC46BFD
NEW QUESTION 59
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