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Cisco 400-007 exam is a four-hour exam that consists of multiple-choice questions and simulation-based questions. 400-007 exam is designed to test the candidate's ability to design network infrastructures that meet the business requirements of an organization. 400-007 exam is conducted in English and is available globally at Pearson VUE testing centers.
Cisco 400-007 exam is a highly specialized certification exam that validates the skills of network design professionals. It tests candidates on their ability to design complex networks and provide solutions to real-world problems. Candidates preparing for the exam should have a deep understanding of network design principles, protocols, and technologies, as well as hands-on experience designing and implementing network solutions.
NEW QUESTION # 98
Which main IoT migration aspect should be reviewed for a manufacturing plant?
- A. Sensors
- B. Applications
- C. Ethernet Switches
- D. Wi-Fi Infrastructure
- E. Security
Answer: E
Explanation:
In IoT environments, especially in manufacturing plants, security is the primary concern during migration:
* IoT devices often have limited security capabilities and may introduce vulnerabilities if not properly segmented, authenticated, and monitored.
* Manufacturing plants operate critical systems where availability, safety, and integrity are paramount.
* CCDE v3.1 emphasizes securing data, devices, and control systems as a top priority during IoT migrations.
Other options explained:
* A: Sensors are part of the IoT solution but not the primary migration concern.
* C: Applications are important but typically come after securing connectivity and endpoints.
* D/E: Infrastructure elements are secondary to security in the migration assessment.
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NEW QUESTION # 99
The Agile Manifesto is a document that defines the key values and principles behind the Agile philosophy and helps development teams work more efficiently and sustainably Each of the four key values is split into two sections a left-hand side and a right-hand side In other words, though there is value in the items on the right we value the items on the left more What is one of the key values of the Agile Manifesto?
- A. contract negotiation over customer collaboration
- B. individuals and interactions over processes and tools
- C. comprehensive documentation over working software
- D. following a plan over responding to change
Answer: B
NEW QUESTION # 100
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.
Answer:
Explanation:
Explanation:
Table Description automatically generated
NEW QUESTION # 101
A network attacker exploits application flaws to compromise critical systems in the organization with these objectives:
* Obtain sensitive data and export the data out of the network.
* Compromise developer and administrator credentials to potentially
What is the next step after application discovery is completed in Zero Trust networkings
- A. Ensure trustworthiness of systems.
- B. Enforce policies and microsegmentation.
- C. Assess real-time security health.
- D. Establish visibility and behavior modeling
Answer: D
Explanation:
https://www.cisco.com/c/en/us/solutions/collateral/enterprise/design-zone-security/zt-arch-guide.html
NEW QUESTION # 102
You want to mitigate failures that are caused by STP loops that occur before UDLD detects the failure or that are caused by a device that is no longer sending BPDUs. Which mechanism do you use along with UDLD?
- A. Loop guard
- B. BPDU filtering
- C. BPDU guard
- D. Root guard
Answer: A
Explanation:
Loop Guardis designed to protect againstSTP loop conditionsthat may occur whenBPDUs are unexpectedly missingon a point-to-point link. This is especially relevant in cases where UDLD (Unidirectional Link Detection) might not detect the problem quickly enough. When BPDUs are absent, a switch might erroneously assume that the link is safe to forward, potentially leading to atemporary Layer 2 loop.
UsingLoop Guardensures that a port moves into aloop-inconsistentstate instead of forwarding traffic if BPDUs are missing, effectively stopping a loop before it forms. This makes it acomplementary mechanism to UDLD, which focuses on detecting unidirectional links at the physical layer, not STP control plane failures.
This recommendation aligns with CCDE v3.1 best practices forresilient Layer 2 designs, which emphasize using multiple mechanisms in tandem to proactively prevent failure conditions before traffic is impacted.
Why other options are incorrect:
* A. Root Guard: Prevents an unauthorized switch from becoming the root bridge but doesn't protect against missing BPDUs.
* B. BPDU Guard: Used mainly on access ports to prevent BPDU reception; not intended for core loop prevention.
* D. BPDU Filtering: Suppresses BPDU exchange entirely, which increases loop risk and is not suited for loop mitigation.
NEW QUESTION # 103
Which two features control multicast traffic in a VLAN environment? (Choose two)
- A. pruning
- B. MLD snooping
- C. IGMP snooping
- D. PIM snooping
- E. RGMP
Answer: B,C
Explanation:
* A (IGMP Snooping): Controls IPv4 multicast traffic within VLANs by listening to IGMP join/leave messages and forwarding multicast only to interested ports.
* B (MLD Snooping): Performs similar multicast control for IPv6 multicast traffic by listening to MLD protocol messages.
* Both technologies reduce unnecessary multicast flooding inside VLANs.
Why other options are incorrect:
* C (RGMP): Controls multicast on router-connected ports, not intra-VLAN.
* D (PIM Snooping): Operates on PIM-enabled Layer 3 devices; less relevant for pure VLAN-based Layer 2 multicast control.
* E (Pruning): Refers to multicast tree pruning in Layer 3 multicast routing, not VLAN Layer 2 control.
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NEW QUESTION # 104
Which methodology is the leading lifecycle approach to network design and implementation?
- A. PPDIOO
- B. Spiral model
- C. V model
- D. Waterfall model
Answer: A
Explanation:
* A (PPDIOO - Prepare, Plan, Design, Implement, Operate, Optimize):PPDIOO is Cisco's structured lifecycle methodology designed specifically for network design, deployment, and management. It ensures continuous improvement, iterative design, and aligns technical efforts with business goals throughout the entire network lifecycle.
Other options explained:
* B: Waterfall is a generic software development methodology.
* C: Spiral emphasizes iterative risk management for software development.
* D: V model applies primarily to software verification and validation.
NEW QUESTION # 105
Company XYZ is planning to deploy primary and secondary (disaster recovery) data center sites. Each of these sites will have redundant SAN fabrics and data protection is expected between the data center sites. The sites are 100 miles (160 km) apart and target RPO/RTO are 3 hrs and 24 hrs, respectively. Which two considerations must Company XYZ bear in mind when deploying replication in their scenario? (Choose two.)
- A. VSANs must be extended from the primary to the secondary site to improve performance and availability.
- B. Target RPO/RTO requirements cannot be met due to the one-way delay introduced by the distance between sites.
- C. VSANs must be routed between sites to isolate fault domains and increase overall availability.
- D. Synchronous data replication must be used to meet the business requirements
- E. Asynchronous data replication should be used in this scenario to avoid performance impact in the primary site.
Answer: C,E
NEW QUESTION # 106
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. 224.0.0.0 to 224.0.0.255
- B. 232.0.0.0 to 232.255.255.255
- C. 239.0.0.0 to 239.255.255.255
- D. 233.0.0.0 to 233.255.255.255
Answer: D
Explanation:
GLOP addressing is defined in RFC 2770. It assigns globally unique multicast addresses based on an organization's ASN by mapping the 16-bit ASN into the middle two octets of the 233.0.0.0/8 address space.
* 233.0.0.0/8 is specifically reserved for GLOP addressing.
* The uniqueness of the address is derived from the assigned ASN.
Why other options are incorrect:
* A: 232.0.0.0/8 is SSM address space.
* C: 239.0.0.0/8 is for administratively scoped multicast.
* D: 224.0.0.0/24 is reserved for local multicast (link-local scope).
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NEW QUESTION # 107
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. low-latency queuing
- C. weighted fair queuing
- D. weighted random early detection
Answer: D
NEW QUESTION # 108
Retef to the exhibit.
This network is running OSPF and EIGRP as the routing protocols Mutual redistribution of the routing protocols has been contoured on the appropriate ASBRs The OSPF network must be designed so that flapping routes m EIGRP domains do not affect the SPF runs within OSPF The design solution must not affect the way EIGRP routes are propagated into the EIGRP domains Which technique accomplishes the requirement?
- A. route summarization on the appropriate ABRS.
- B. route summarization the ASBR interfaces facing the OSPF domain
- C. route summarization on EIDRP routers connecting toward the ASBR
- D. route summarization on the appropriate ASBRS.
Answer: D
NEW QUESTION # 109
What is a disadvantage of the traditional three-tier architecture model when east west traffic between different pods must go through the distribution and core layers?
- A. high latency
- B. low bandwidth
- C. security
- D. scalability
Answer: A
NEW QUESTION # 110
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. higher operating expense and capital expenditure
- B. complex and distributed management flow
- C. exponential growth of resource-intensive application
- D. need for intelligent traffic monitoring
Answer: B
NEW QUESTION # 111
Which action must be taken before new VoIP systems are implemented on a network to ensure that the network is ready to handle the traffic?
- A. Check if anomaly detection is enabled for SIP and H.323 on Layer 3 devices
- B. Make recommendations to limit the size of the half-open session table on routers
- C. Evaluate bandwidth utilization and connection quality
- D. Enable special requirements such as direct DID lines on pickup
Answer: D
NEW QUESTION # 112
Company XYZ has a multicast domain that spans across multiple autonomous systems. The company wants to choose a technology that provides simplified and controlled approach to interconnecting the multicast domains. Which technology is the best fit for this purpose?
- A. MSDP
- B. MPLS
- C. PIM SSM
- D. PIM sparse mode
Answer: A
NEW QUESTION # 113
Company XYZ plans to run OSPF on a DMVPN network. They want to use spoke-to-spoke tunnels in the design. What is a drawback or concern in this type of design?
- A. Manual configuration of the spoke IP address on the hub will be needed
- B. Additional host routes will be inserted into the routing tables
- C. There will be split-horizon issue at the hub
- D. Manual configuration of the spokes with the appropriate priority will be needed
Answer: B
Explanation:
* A (Additional host routes):Spoke-to-spoke dynamic tunnels in DMVPN phase 3 result in OSPF populating routing tables with multiple /32 host routes for each spoke-to-spoke tunnel, which can impact scalability and routing table size.
Other options explained:
* B: Priority changes not typically required.
* C: Split-horizon issue is solved in DMVPN phase 3.
* D: Spokes dynamically register with the hub; no manual spoke IP configuration needed.
NEW QUESTION # 114
Refer to the table.
A customer investigates connectivity options for a DCI between two production data centers to aid a large-scale migration project. The solution must provide a single 10G connection between locations and be able to run its own varying QoS profiles without service provider interaction based on the migration stages. All connectivity methods are at 10 Gbps. Which transport technology costs the least if the connectivity is required for just one year?
- A. Metro Ethernet
- B. DWDM over dark fiber
- C. MPLS wires only
- D. CWDM over dark fiber
Answer: C
NEW QUESTION # 115
Which two design solutions ensure sub 50 msec of the convergence time after a link failure in the network?
(Choose two)
- A. MPLS-FRR
- B. IGP fast hello
- C. BFD
- D. minimal BGP scan time
- E. Ti-LFA
Answer: A,E
NEW QUESTION # 116
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Cisco 400-007 exam is a written exam that consists of 90-110 multiple-choice questions, and the duration of the exam is 120 minutes. Candidates are required to demonstrate their knowledge and understanding of network design methodologies, network infrastructure and services, and network security. 400-007 exam also evaluates candidates' ability to design network solutions that meet business requirements, considering factors such as scalability, availability, and performance.
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