2025年最新の400-007試験問題集で最近更新された330問題 [Q39-Q61]

2025年最新の400-007試験問題集で最近更新された330問題

Cisco 400-007リアル2025年最新のブレーン問題集で模擬試験問題集

質問 # 39
The network team in XYZ Corp wants to modernize their infrastructure and is evaluating an implementation and migration plan to allow integration MPLS-based, Layer 2 Ethernet services managed by a service provider to connect branches and remote offices. To decrease OpEx and improve
response times when network components fail, XYZ Corp decided to acquire and deploy new routers. The network currently is operated over E1 leased lines (2 Mbps) with a managed CE service provided by the telco.
Drag and drop the implementation steps from the left onto the corresponding targets on the right in the correct order.

正解：

解説：

質問 # 40
The network team in XYZ Corp wants to modernize their infrastructure and is evaluating an implementation and migration plan to allow integration MPLS-based, Layer 2 Ethernet services managed by a service provider to connect branches and remote offices. To decrease OpEx and improve response times when network components fail, XYZ Corp decided to acquire and deploy new routers. The network currently is operated over E1 leased lines (2 Mbps) with a managed CE service provided by the telco.
Drag and drop the implementation steps from the left onto the corresponding targets on the right in the correct order.

正解：

解説：

質問 # 41
IPFIX data collection via standalone IPFIX probes is an alternative to flow collection from routers and switches. Which use case is suitable for using IPFIX probes?\

A. performance monitoring
B. security
C. capacity planning
D. observation of critical links

正解：D

質問 # 42
An enterprise campus is adopting a network virtualization design solution with these requirements It must include the ability to virtualize the data plane and control plane by using VLANs and VRFs It must maintain end-to-end logical path transport separation across the network resources available grouped at the access edge Which two primary models can this network virtualization design be categorized? (Choose two)

A. Group virtualization
B. Session isolation
C. Services virtualization
D. Path isolation
E. Edge isolation

正解：C、D

質問 # 43
A business invests in SDN and develops its own SDN controller that, due to budget constraints, runs on a single controller. The controller actively places an exclusive lock on the configuration of the devices to ensure it is the only source of changes to the environment. What is the result if the controller fails?

A. If a device fails, the configuration backup is unavailable-
B. All device configurations are in read-only mode until the controller is restored.
C. The control plane is unavailable until the controller is restored.
D. Manual changes are only possible until the controller is restored

正解：B

質問 # 44
Which function is performed at the access layer of the three-layer hierarchical network design model?

A. redundancy and load balancing
B. fault isolation
C. reliability -
D. QoS classification and marking boundary
E. fast transport

正解：D

質問 # 45
A product manufacturing organization is integrating cloud services into their IT solution The IT team is working on the preparation phase of the implementation approach, which includes the Define Strategy step. This step defines the scope of IT, the application, and the service What is one topic that should be considered in the Define Strategy step?

A. contingency exit strategy steps
B. innovate and align with business according to volume
C. financial and governance models
D. due diligence and financial scenarios

正解：A

質問 # 46
Company XYZ is running SNMPv1 in their network and understands that it has some flaws. They want to change the security design to implement SNMPv3 in the network Which network threat is SNMPv3 effective against?

A. man-in-the-middle attack
B. brute force dictionary attack
C. masquerade threats
D. DDoS attack

正解：B

質問 # 47
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. community
B. local preference
C. MED
D. As path

正解：B

質問 # 48
Which two statements describe the functionality of OSPF packet-pacing timers? (Choose two )
The group-pacing timer controls the interval that is used for group and individual LSA refreshment

A. OSPF retransmission-pacing timers allow control of packet interleaving between nonconsecutive link-state update packets in the OSPF retransmission queue.
B. OSPF flood-pacing timers allow dynamic control of the OSPF transmission queue size
C. OSPF retransmission-pacing timers allow control of interpacket spaang between consecutive link-state update packets in the OSPF retransmission queue.
D. OSPF flood-pacing timers allow control of interpacket spacing between consecutive link-state update packets in the OSPF transmission queue

正解：C、D

質問 # 49
While reviewing an existing network design, you are discussing the characteristics of different STP versions.
Which protocol minimizes unicast flooding during a Topology Change Notification in a Layer 2 switched network with many VLANs?

A. PVSTP+
B. MST
C. PVRSTP
D. STP

正解：C

質問 # 50
Refer to the exhibit.

After a network audit a network engineer must optimize the current network convergence time The proposed solution must consider link layer and control plane failures. Which solution meets the requirements?

A. Increase fast hello timers
B. Implement BFD
C. Configure debounce timers
D. Enable LSP fast flood

正解：B

質問 # 51
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：A

質問 # 52
SDN emerged as a technology trend that attracted many industries to move from traditional networks to SDN. Which challenge is solved by SDN for cloud service providers?

A. exponential growth of resource-intensive application
B. complex and distributed management flow
C. need for intelligent traffic monitoring
D. higher operating expense and capital expenditure

正解：A

質問 # 53
SD-WAN can be used to provide secure connectivity to remote offices, branch offices, campus networks, data centers, and the cloud over any type of IP-based underlay transport network. Which two statements describe SD WAN solutions? (Choose two.)

A. Solutions allow for variations of commodity and specialized switching hardware.
B. Solutions include centralized orchestration, control, and zero-touch provisioning.
C. Control and data forwarding planes are kept separate.
D. SD-WAN networks are inherently protected against slow performance.
E. Improved operational efficiencies result In cost savings.

正解：B、C

質問 # 54
Company XYZ is running BGP as their routing protocol. An external design consultant recommends that TCP path MTU discovery be enabled. Which effect will this have on the network?

A. It will increase the convergence time.
B. It will enhance the performance of TCP-based applications.
C. It will improve the convergence time.
D. It will create a loop free path.

正解：C

質問 # 55
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 R1-R4-R5-R3 continues to be the best path because the metric is better
B. The path R1-R4-R5-R3 continues to be the best path because OSPF does not compare the metrics between two domains
C. The path reverts back to R1-R2-R3 because the route type is E1
D. The path reverts to R1-R2-R3 because this was the previous best path

正解：D

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 # 56
Which Interconnectivity method offers the fastest convergence in the event of a unidirectional issue between three Layer 3 switches connected together with routed links in the same rack in a data center?

A. Copper Ethernet connectivity with UDLD enabled
B. Copper Ethernet connectivity with BFD enabled
C. Fiber Ethernet connectivity with UDLD enabled
D. Fiber Ethernet connectivity with BFD enabled

正解：D

質問 # 57
Drag and drop the end-to-end network virtualization elements from the left onto the correct network areas on the right.

正解：

解説：

質問 # 58
Which best practice ensures data security in the private cloud?

A. Encrypt data at rest and in transition.
B. Anonymize data ownership to comply with privacy rules.
C. Use IPsec for communication between unsecured network connection
D. Use the same vendor for consistent encryption.

正解：A

質問 # 59
The network designer needs to use GLOP IP addresses in order to make them unique within their ASN Which multicast address range should be used?

A. H233.0.0 0 to 233.255.255 255
B. 239000 to 239255255.255
C. 224000 to 2240.0 255
D. 232.0.0.0 to 232 255.255.255

正解：A

質問 # 60
Organizations that embrace Zero Trust initiatives ranging from business policies to technology infrastructure can reap business and security benefits. Which two domains should be covered under Zero Trust initiatives?
(Choose two)