2024年最新の400-007プレミアム資料テストPDFの無料問題集お試しセット
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Cisco 400-007試験は、ネットワークデザインのプロフェッショナルのスキルを検証する非常に専門的な認定試験です。この試験では、複雑なネットワークの設計能力や現実世界の問題に対する解決策の提供能力が候補者に求められます。試験の準備をする候補者は、ネットワーク設計の原則、プロトコル、および技術の深い理解と、ネットワークソリューションの設計と実装の実践的な経験を持っている必要があります。
Cisco 400-007 認定試験の出題範囲：
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質問 # 176
Refer to the exhibit.
An engineer is designing the traffic flow for AS 111. Traffic from AS 111 should be preferred via AS 100 for all external routes. A method must be used that only affects AS 111. Which BGP attributes are best suited to control outbound traffic?
- A. local preference
- B. community
- C. MED
- D. As path
正解：A
質問 # 177
Drag and drop the multicast protocols from the left onto the current design situation on the right.
正解：
解説：
質問 # 178
Which two types of planning approaches are used to develop business-driven network designs and to facilitate the design decisions? (Choose two)
- A. tactical planning approach
- B. business optimization approach
- C. cost optimization approach
- D. strategic planning approach
- E. modular approach
正解：A、D
質問 # 179
A legacy enterprise is using a Service Provider MPLS network to connect its head office and branches. Recently, they added a new branch to their network. Due to physical security concerns, they want to extend their existing IP CCTV network of the head office to the new branch, without any routing changes in the network. They are also under some time constraints. What is the best approach to extend the existing IP CCTV network to the new branch, without incurring any IP address changes?
- A. EoMPLS
- B. VXLAN
- C. GRE
- D. L2TPv3
正解：D
質問 # 180
Company XYZ wants to use the FCAPS ISO standard for network management design. The focus of the design should be to minimize network outages by employing a set of procedures and activities to detect and isolate network issues and the appropriate corrective actions to overcome current issues and prevent them from occurring again. Which layer accomplishes this design requirement?
- A. accounting management
- B. security management
- C. performance management
- D. fault management
正解：D
質問 # 181
Refer to the table.
A customer investigates connectivity options for a DCI between two production data centers. The solution must provide dual 10G connections between locations with no single points of failure for Day 1 operations. It must also include an option to scale for up to 20 resilient connections in the second year to accommodate isolated SAN over IP and isolated, dedicated replication IP circuits. All connectivity methods are duplex 10 Gbps. Which transport technology costs the least over two years, in the scenario?
- A. DWDM
- B. MPLS
- C. Metro Ethernet
- D. CWDM
正解：C
質問 # 182
Which design consideration is valid when you contrast fabricPath and trill?
- A. FabricPath permits active-active mode, but TRILL supports only active-standby mode.
- B. FabricPath Permits ECMP, but TRILL does not
- C. FabricPath permits active-active FHRP and TRILL support anycast gateway.
- D. FabricPath uses IS-IS, but TRILL uses VxLAN
正解：C
質問 # 183
Refer to the exhibit.
The network 10.10.0 .0/16 has been redistributed to OSPF processes and the best path to the destination from R1 has been chosen as R1-R2-R3 A failure occurred on the link between R2 and R3 and the path was changed to R1-R4-R5-R3 What happens when the link between R2 and R3 is restored'?
- A. The path reverts to R1-R2-R3 because this was the previous best path
- B. The path R1-R4-R5-R3 continues to be the best path because the metric is better
- C. The path reverts back to R1-R2-R3 because the route type is E1
- D. The path R1-R4-R5-R3 continues to be the best path because OSPF does not compare the metrics between two domains
正解：A
解説：
When the link between R2 and R3 is restored, the path reverts back to R1-R2-R3 because this was the previous best path. This is because OSPF uses the Dijkstra algorithm to calculate the shortest path tree (SPT) and the path with the lowest cost is chosen as the best path. In this case, the cost of the path R1-R2-R3 is lower than the cost of the path R1-R4-R5-R3, so the path R1-R2-R3 is chosen as the best path. OSPF also has a preference order for different types of routes, such as intra-area, inter-area, external type 1, external type 2, NSSA type 1, and NSSA type 2. However, this preference order only applies when OSPF has to choose between routes of different types to the same destination. In this scenario, both paths are external type 2 routes, so the preference order does not affect the path selection
質問 # 184
What is the most important operational driver in building a resilient and secure modular network design?
- A. Increase time spent on developing new features
- B. Dependencies on hardware or software that is difficult to scale
- C. Reduce the frequency of failures requiring human intervention
- D. Minimize app downtime
正解：D
質問 # 185
A network design includes a long signaling delay in notifying the Layer 3 control plane that an interface has failed Which two of these actions would reduce that delay? (Choose two.)
- A. Increase network stability.
- B. Increase the notification of interface flaps.
- C. Reduce the time for the network to reconverge.
- D. Enable lower data link layer recovery systems to have an opportunity to restore the interface
正解：C、D
質問 # 186
You are using iSCSI to transfer files between a 10 Gigabit Ethernet storage system and a 1 Gigabit Ethernet server The performance is only approximately 700 Mbps and output drops are occurring on the server switch port. Which action will improve performance in a cost-effective manner?
- A. Enable the TCP Nagle algorithm on the receiver
- B. Use a WRED random drop policy
- C. Increase the queue to at least 1 GB
- D. Change the protocol to CIFS.
正解：D
質問 # 187
Which two benefits can software defined networks provide to businesses? (Choose two.)
- A. provides additional redundancy
- B. enables innovation
- C. reduction of OpEx/CapEx
- D. decentralized management
- E. reduced latency
- F. meets high traffic demands
正解：B、C
質問 # 188
Which two features are advantages of SD-WAN compared to MPLS-based connectivity? (Choose two.)
- A. manages failures through backup links
- B. uses policy-based forwarding of real-time traffic with less complexity
- C. separates infrastructure and policy
- D. unifies the WAN backbone
- E. uses FEC constructs for traffic forwarding, thereby improving efficiency
正解：B、D
質問 # 189
Refer to the exhibit.
As part of a redesign project, you must predict multicast behavior What happens to the multicast traffic received on the shared tree (*,G), if it is received on the LHR interface indicated*?
- A. It is dropped due to an unsuccessful RPF check against the multicast source
- B. It is switched give that no RPF check is performed
- C. It is dropped due to an unsuccessful RPk8t8ck against the multicast receiver.
- D. It is switched due to a successful RPF check against the routing table
正解：D
質問 # 190
You are designing the QoS policy for a company that is running many TCP-based applications. The company is experiencing tail drops for these applications. The company wants to use a congestion avoidance technique for these applications. Which QoS strategy can be used to fulfill the requirement?
- A. first-in first-out
- B. weighted fair queuing
- C. low-latency queuing
- D. weighted random early detection
正解：C
質問 # 191
Router R1 is a BGP speaker with one peering neighbor over link "A". When the R1 link/interface "A" fails, routing announcements are terminated, which results in the tearing down of the state for all BGP routes at each end of the link. What is this a good example of?
- A. resiliency
- B. fate sharing
- C. redundancy
- D. fault isolation
正解：B
質問 # 192
Refer to the exhibit.
Traffic was equally balanced between Layer 3 links on core switches SW1 and SW2 before an introduction of the new video server in the network. This video server uses multicast to send video streams to hosts and now one of the links between core switches is over utilized Which design solution solves this issue?
- A. Add more links between core switches.
- B. Filter IGMP joins on an over -utilized link.
- C. Apply a more granular load- balancing method on SW1.
- D. Apply a more granular load-balancing method on SW2.
- E. Aggregate links Layer 2 link aggregation.
正解：E
質問 # 193
An enterprise has identified these causes for inefficient CAPEX spending:
* CAPEX planning is driven by technology and not by business objectives.
* The CAPEX planning team lacks the data it needs to perform due diligence tasks.
* The organizational structure lacks sufficient accountability and incentives.
Which corporate cultural change contributes to improving the effectiveness of CAPEX spending?
- A. Build a financial control function that delivers high-quality reports on operational expenses for business insight and financial reporting.
- B. Adopt new organizational models that promote real accountability for ROI. not just revenue. EBITDA, and cash.
- C. Marketing and product management divisions must reduce their CAPEX budgets significantly to drive the change.
- D. CxO-level staff must have a full technical understanding but the should not trust their technical leaders fully.
正解：B
質問 # 194
You have been asked to design a high-density wireless network for a university campus. Which two principles would you apply in order to maximize the wireless network capacity? (Choose two.)
- A. Implement a four-channel design on 2.4 GHz to increase the number of available channels
- B. Choose a high minimum data rate to reduce the duty cycle.
- C. Enable 802.11n channel bonding on both 2.4 GHz and 5 GHz to increase the maximum aggregated cell throughput.
- D. increases the number of SSlDs to load-balance the client traffic.
- E. Make use of the 5-GHz band to reduce the spectrum utilization on 2.4 GHz when dual-band clients are used.
正解：B、E
質問 # 195
How many fully established neighbour relationships exist on an Ethernet with five routers running OSPF as network type broadcast?
- A. 0
- B. 1
- C. 2
- D. 3
- E. 4
正解：C
解説：
Assuming routers R1-R5, R1 is elected DR, R2 BDR. Fully established neighborships only occur to DR and BDR, all other neighbors are in 2Way DR other state. DR|BDRFull relationships:
R2-R1
R3-R1
R3-R2
R4-R1
R4-R2
R5-R1
R5-R2
質問 # 196
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