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この試験に備えるために、候補者はTCP/IP、ルーティングプロトコル、ネットワークセキュリティを含むネットワークの基礎をしっかり理解している必要があります。また、シスコのルーティングおよびスイッチング技術、キャリアイーサネット、プロバイダーバックボーンブリッジング、多重プロトコルラベルスイッチング（MPLS）などのサービスプロバイダーテクノロジーの経験も必要です。シスコの300-510試験は、シスコ認定ネットワークプロフェッショナルサービスプロバイダ（CCNP Service Provider）認定トラックの一部であり、CCNP Service Provider認定を取得するための要件です。
質問 # 57
Refer to the exhibit.
CE1 and CE2 are iBGP neighbors in AS 65516. All traffic that exits AS 65516 must use the link from CE1 to PE1. CE1 is advertising a higher local preference to CE2, but traffic from CE2 still prefers the PE2 link. Which action corrects the problem?
- A. Configure CE1 to send routes to CE2 with a higher weight.
- B. Add the next-hop self command to the CE1 neighbor statement for CE2.
- C. Configure CE1 to send routes to CE2 with a higher MED.
- D. Add the lower local-preference value on PE2 towards CE2.
正解：B
質問 # 58
Refer to the exhibit.
Refer to the exhibit. R21 is a multicast source sending multicast traffic 224.1.1.1 to R23, with RP22 serving as the rendezvous point inside AS65222. A network engineer noticed that when R21 goes down, R12 in AS65111 starts to send the same multicast group 224.1.1.1 through RP11. Which action resolves the issue ?
- A. Block service groups 224.0.1.39 and 224.0.1.40 between the two autonomous systems
- B. Advertise RP2 with a high local preference in AS65222.
- C. Disable PIM parse mode between RP11 and RP22 in the two autonomous systems.
- D. Enable passive intertaoe under EIGRP between the two autonomous systems.
正解：A
質問 # 59
Refer to the exhibit.
The green policy is designed with low delay, and the pink policy is designed with low cost. What is the next hop for node A on its way to node D, with the objective of achieving a low delay?
- A. 192.168.1.6
- B. 192.168.3.6
- C. 192.168.3.2
- D. 192. 168.1.2
正解：D
質問 # 60
Refer to the exhibit
Router R1 is configured to advertise outgoing SA messages to routers R2 and R3, but to receive incoming SA messages only from R2. Which additional configuration must an engineer apply to router R1 so it filters all MSDP SA messages from Domain-C?
- A. R3# ip msdp password peer 192.168.1.1
- B. R3# ip msdp sa-filter out 192.168.3.1
- C. R1# ip msdp sa-filter in 192.168.3.1
- D. R1# ip msdp password peer 192.168.3.1
正解：C
質問 # 61
Refer to the exhibit.
An engineer has configured all routers in the environment to run IS-IS Level 1 and Level 2 routing. The engineer wants traffic from R1 to R5 to pass via R2. but IS-IS routing has calculated the best path via R4. Which action corrects the problem?
- A. Set the link metric for the link from router R1 to router R4 to 30 or more.
- B. Configure routers R1, R2, and R5 for Level 1 routing only.
- C. Set the link metric on R2 for the links from router R2 to routers R3 and R4 to 30 or more.
- D. Configure routers R1, R4, and R5 for Level 2 routing only.
正解：A
質問 # 62
Refer to the exhibit.
Refer to the exhibit. Excessive routes are flooding from network 150.0.0.0 into AS100. Internet traffic between AS400 and AS300 is working normally. No route controlling mechanism is applied on incoming and outgoing traffic Which configuration resolves the issue?
- A. Option A
- B. Option B
- C. Option C
- D. Option D
正解：A
質問 # 63
Which statement about BFD on Cisco IOS XR Software is true?
- A. Cisco IOS XR Software does not support BFD multihop for IPv4.
- B. Cisco IOS XR router must use LDP to route back to the Cisco IOS router to establish the peer relationship.
- C. Cisco IOS XR router must use dynamic routing or a static route back to the Cisco IOS router to establish the peer relationship.
- D. BFD is not compatible between Cisco IOS XR and Cisco IOS Software.
正解：C
解説：
Reference:
https://www.cisco.com/c/en/us/td/docs/routers/asr9000/software/asr9k-r6-3/routing/configuration/ guide/b-routing-cg-asr9000-63x/b-routing-cg-asr9000-63x_chapter_0100.html
質問 # 64
Refer to the exhibit.
When implementing SRv6, which SID does R2 propagate into area 0 for the prefix 2001:DB8:1:1/128?
- A. 0
- B. 1
- C. 2
- D. 3
正解：B
質問 # 65
An engineer warns to map a multicast IP address to a multicast MAC How many bits are used to make the conversion?
- A. higher-order 23 bits
- B. low order 23 bits
- C. lower-order 24 bits
- D. high-order 24 bits
正解：B
質問 # 66
Refer to the exhibit. A network operator is getting the route for 10.11.11 0/24 from two upstream providers on #XR3.
The network operator must configure #XR3 to force the 10.11.11.0/24 prefix to route via next hop of 10.0.0.9 as primary when available.
Which of these can the operator use the routing policy language for, to enforce this traffic forwarding path?
- A. lower local preference on the prefix coming from 192.168.0.2
- B. weight of 0 on the prefix coming from 192.168.0.2
- C. higher local preference on the prefix coming from 192.168.0.1
- D. weight of 100 on the prefix coming from 192.168.0.1
正解：C
質問 # 67
Refer to the exhibit
Which router does R1 install as an alternate next hop when trying to reach R3 if LFA is enabled?
- A. R4
- B. R5
- C. R3
- D. R2
正解：D
質問 # 68
What is one of the configuration errors within an AS that can stop a Cisco IOS-XR router from announcing certain prefixes to its EBGP peers?
- A. The outbound BGP route policy only has set actions defined without any pass actions defined
- B. Some prefixes were mistagged with the no-export BGP community
- C. The inbound BGP route policy only has set actions defined without any pass actions defined
- D. Some prefixes were set with an MED of 0
正解：B
質問 # 69
Refer to the exhibit. A network engineer has divided AS into confederations. Due to repeated ASN, when the 10.0 0.0/8 prefix from R1 arrives to R2, BGP automatically rejects it.
What should the engineer do to fix the problem so that BGP allows that prefix on R2?
- A. Configure the command as-override on R2.
- B. Configure the command allowas-in on R2.
- C. Configure the command allowas-in on all the PE routers.
- D. Configure the command as-override on R1.
正解：B
解説：
https://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/112236-allowas-in- bgp-config-example.html
質問 # 70
Refer to the exhibit. The extension header of the IPv6 header is ignored when which value is equal to zero?
- A. Hdr Ext Len
- B. Next Header
- C. Segments Left
- D. Routing Type
正解：C
解説：
https://www.ciscopress.com/articles/article.asp?p=31948
質問 # 71
Which command is used to enable BIDIR-PIM under global configuration mode for Cisco IOS XE Sofware?
- A. ip multicast-routing
- B. ipv4 pim bidir-enable
- C. ip pim bidir-enable
- D. ip pim bidir
正解：C
質問 # 72
Refer to the exhibit. An engineer is troubleshooting connectivity issues on the MPLS core network. A customer connected through R4 cannot reach the OSPF domain on R5. While checking the routing table of R1, the engineer cannot see all the routes from R3 and R5. Which task must the engineer perform so that R4 is able to reach R5?
- A. Enable route filtering between routers R1 and R3.
- B. Enable MP-BGP peering on routers R1, R3, R4, and R5.
- C. Enable OSPF on the Area-0 routers and configure MP-BGP between routers R1 and R3.
- D. Enable OSPF peering and configure route redistribution between routers R4 and R1.
正解：B
質問 # 73
In a PIM-SM environment, which mechanism determines the traffic that a receiver receives?
- A. The receiver explicitly requests its desired traffic from the RP on the shared tree.
- B. The RP on the shared tree floods traffic out of all PIM configured interfaces.
- C. The receiver explicitly requests traffic from each desired source, which responds by sending all traffic.
- D. The receiver explicitly requests traffic from a single source, which responds by forwarding all traffic.
正解：C
質問 # 74
Refer to the exhibit. Routers RA and RB are IS-IS peers configured for NSF but router RC is an IS-IS peer without NSF capability. If RA undergoes processor switchover what is the effect on the network environment?
- A. If RC is operating without the Cisco configuration option all three routers tear down their peering relationships and re-establish peering
- B. If RC is operating without the Cisco configuration option only 2 routers tear down their peering relationships and re-establish peering
- C. All peer relationships remain up, but the link-state database is rebuilt on each device
- D. All peer relationships remain up and the link-state database is unchanged
正解：C
質問 # 75
Refer to the exhibit.
Which effect of this configuration is true?
- A. It sets the keepalive timer to 30 milliseconds and the hold timer to 240 milliseconds
- B. It sets the hold timer to 30 seconds and the keepalive timer to 240 seconds
- C. It sets the keepalive timer to 30 seconds and the hold timer to 240 seconds.
- D. It sets the hold timer to 30 milliseconds and the keepalive timer to 240 milliseconds
正解：C
質問 # 76
Refer to the exhibit.
Refer to the exhibit. Users at the branch office on R1 reported issue with an application at the home office on R4. While troubleshooting the issue, a network engineer determined that The branch-office users can connect to the home office.
The IS-IS adjacencies between R1 and R2 and R1 and the branch office are up.
Traffic from R1 to the R2 10.20.1.0/24 network is moving normally.
The application at the home office is experiencing packet drops on the connection to the Branch, and R3 cannot reach the R1 172.16.10.0/24 network.
Which action resolves the issues?
- A. Redistribute static connected routes in IS-IS on router R4.
- B. Configure the IS-IS core instance on the RI GigabitEthernet0/3 interface.
- C. Configure the IS-IS core instance on the R2 GigabitEthernet0/1 interface.
- D. Redistribute static connected routes in IS-IS on router RI.
正解：B
質問 # 77
What is the role of segment routing mapping server?
- A. It advertises a local SID mapping policy to all the mapping clients.
- B. It reads and translates remotely received SIDs from other mapping servers to create SID mapping entries.
- C. It selects multiple mapping entries to create overlapping active mapping policies.
- D. It works with IGP instances to calculate the prefix-SIDs in the absence of a mapping policy.
正解：A
解説：
質問 # 78
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シスコ300-510試験は、60〜70の問題から成る90分の試験です。この試験は英語と日本語で受験でき、オンラインまたはPearson VUEテストセンターで受験できます。試験料は300米ドルであり、認定を更新するためには、3年ごとに再認定試験を受けるか、継続教育クレジットを取得する必要があります。
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