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Cisco 400-007 exam is a challenging and rigorous exam that tests a candidate's knowledge of network design principles and methodologies. It is an essential certification for network architects, engineers, and designers who want to demonstrate their expertise in this field and advance their careers.
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.
NEW QUESTION # 115
Refer to the exhibit.
A customer runs OSPF with Area 5 between its aggregation router and an internal router When a network change occurs in the backbone. Area 5 starts having connectivity issues due to the SPF algorithm recalculating an abnormal number of times in Area 5 You are tasked to redesign this network to increase resiliency on the customer network with the caveat that Router B does not support the stub area How can you accomplish this task*?
- A. Set Area 5 to stubby at the ABR anyway
- B. Implement LSA filtering ontheAB, allowing summary routes and preventing more specific routes into Area 5
- C. Increase the bandwidth on the connection between Router A and Router B
- D. Turn on LSA throttling on all devices in Area 5
- E. Create a virtual link to Area 0 from Router B to the ABR
Answer: B
NEW QUESTION # 116
Company XYZ was not satisfied with the reconvergence time OSPF is taking. BFD was implemented to try to reduce the reconvergence time, but the network is still experiencing delays when having to reconverge. Which technology will improve the design?
- A. Change the protocol to BGP
- B. BFDecho
- C. Change the OSPF hello and dead intervals
- D. OSPF fast hellos
Answer: B
NEW QUESTION # 117
Company XYZ is migrating their existing network to IPv6 and they must plan for Layer 2 and Layer 3 devices Some of the access layer switches do not support IPv6, however, core and distribution switches fully support unicast and multicast routing. The company wants to minimize cost of the migration. Which migration strategy should be used in the design?
- A. Layer 2 switches will not affect the implementation of IPv6. They can be included in the design in their current state.
- B. The access layer switches must support DHCPv6. Any switches that do not support DHCPv6 must be replaced.
- C. Upgrade the nonsupporting switches Otherwise, it will cause an issue with the migration.
- D. The access layer switches must support IGMP snooping at a minimum. Any switches that do not support IGM snooping must be replaced.
Answer: A
NEW QUESTION # 118
During evaluation of migrating current on premises infrastructure to add cloud-based infrastructure, a network planning team must meet three core requirements as they make recommendations on which cloud strategy to adopt going forward
* Technology is changing rapidly, therefore the enterprise must be open to adopting new ways of doing things, and be ready to invest CapEx-funds in the next three years
* Network bandwidth capacity requirements are dynamic and are expected to change over the next year
* If new technologies are to be introduced, operational expenses must be kept at a minimum. Which cloud strategy meets these requirements?
- A. public
- B. private
- C. hybrid
- D. multicloud
Answer: D
NEW QUESTION # 119
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. MED
- C. As path
- D. local preference
Answer: D
NEW QUESTION # 120
Which mechanism enables small, unmanaged switches to plug into ports of access switches without risking switch loops?
- A. PortFast
- B. BPDU guard
- C. UDLD
- D. Root guard
Answer: B
NEW QUESTION # 121
Which aspect of BGP-LS makes it scalable in large network when multiarea topology information must be gathered?
- A. open-loop flow control
- B. transmit flow control
- C. hardware flow control
- D. TCP-based flow control
Answer: B
NEW QUESTION # 122
If the desire is to connect virtual network functions together to accommodate different types of network service connectivity what must be deployed?
- A. daisy chaining
- B. linking
- C. switching
- D. service chaining
- E. bridging
Answer: D
Explanation:
Service chaining is the technique of connecting virtual network functions together to provide different types of network service connectivity. Service chaining uses software-defined networking (SDN) programmability to create a chain of connected network services, such as firewalls, load balancers, NAT, and intrusion protection. Service chaining can automate the provisioning of network applications that have different characteristics and requirements, such as security, latency, or quality of service (QoS). Service chaining can also optimize the use of network resources and improve application performance by using SDN analytics and performance tools to select the best available network paths and avoid network congestion. Service chaining is being used in many SDN and network functions virtualization (NFV) use cases and deployments, such as data centers, carrier networks, and virtual customer edge123. Reference:
1: What is Network Service Chaining or Service Function Chaining - SDxCentral
2: On service chaining using Virtual Network Functions in Network-enabled Cloud systems | IEEE Conference Publication | IEEE Xplore
3: Service function chaining - Gini5
NEW QUESTION # 123
A small organization of 20 employees is looking to deliver a network design service for modernizing customer networks to support advanced solutions.
* Project scope and weekly progress should be visualized by the management.
* Always consider feedback and make changes accordingly during the project.
* Should consider flexibility to change scope at the point of time.
Which project methodology meets the requirements and have the least impact on the outcome?
- A. Six-Sigma
- B. Scrum
- C. LEAN
- D. Kanban
Answer: B
Explanation:
https://firebrand.training/uk/blog/scrum-vs-six-sigma-which-one-is-right-for-you
NEW QUESTION # 124
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. individuals and interactions over processes and tools
- B. contract negotiation over customer collaboration
- C. comprehensive documentation over working software
- D. following a plan over responding to change
Answer: A
NEW QUESTION # 125
Which three tools are used for ongoing monitoring and maintenance of a voice and video environment? (Choose three.)
- A. flow-based analysis with PTP time-stamping to measure loss, latency, and jitter
- B. passive monitoring via synthetic probes to measure loss, latency, and jitter
- C. call management analysis to identify CAC failures and call quality issues
- D. call management analysis to identify network convergence-related failures
- E. flow-based analysis to measure bandwidth mix of applications and their flows
- F. active monitoring via synthetic probes to measure loss, latency, and jitter
Answer: C,E,F
NEW QUESTION # 126
Which two actions must merchants do to be compliant with the Payment Card Industry Data Security Standard? (Choose two.)
- A. install firewalls
- B. conduct risk analyses
- C. use antivirus software
- D. establish risk management policies
- E. establish monitoring policies
Answer: A,C
NEW QUESTION # 127
Drag and drop the characteristics from the left onto the corresponding network management options on the right.
Answer:
Explanation:
NEW QUESTION # 128
Which two features describe controller-based networking solutions compared to traditional networking solutions? (Choose two.)
- A. reduce network configuration complexity
- B. allow for fewer network failures
- C. inflate licensing costs
- D. increase network bandwidth usage
- E. provide centralization of primary IT functions
Answer: A,E
NEW QUESTION # 129
A key to maintaining a highly available network is building in the appropriate redundancy to protect against failure. This redundancy is carefully balanced with the inherent complexity of redundant systems. Which design consideration is relevant for enterprise WAN use cases when it comes to resiliency?
- A. The design approach should consider simple and centralized management aspect
- B. Design in a way that expects outages and attacks on the network and its protected resources
- C. Design automation tools wherever it is appropriate for greater visibility
- D. Design in a way that it simplifies and improves ease of deployment
Answer: B
NEW QUESTION # 130
Which architecture does not require an explicit multicast signaling protocol, such as PIM or P2MP, to signal the multicast state hop-by-hop, but instead uses a link state protocol to advertise the multicast forwarding state?
- A. Bi-directional implicit replication
- B. Binary indexed explicit routing
- C. Binary intermediate enhanced routing
- D. Bit indexed explicit replication
Answer: D
NEW QUESTION # 131
Which two pain points are the most common for container technology adoption? (Choose two)
- A. Compliance
- B. Performance
- C. Cost
- D. Skilled staff
- E. Security
- F. Container deployment
Answer: D,F
NEW QUESTION # 132
Drag and drop the design use cases from the left onto the correct uRPF techniques used to prevent spoofing attacks Not all options are used.
Answer:
Explanation:
NEW QUESTION # 133
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. CWDM
- B. MPLS
- C. Metro Ethernet
- D. DWDM
Answer: C
NEW QUESTION # 134
Which service abstracts away the management of the operating system, middleware, and runtime?
- A. BMaaS
- B. PaaS
- C. SaaS
- D. laaS
Answer: B
Explanation:
IaaS, PaaS, and SaaS each offer a progressive layer of abstraction after that. IaaS abstracts away the physical compute, network, storage, and the technology needed to virtualize those resources. PaaS goes a step further and abstracts away the management of the operating system, middleware, and runtime.
https://www.ibm.com/topics/iaas#:~:text=IaaS%20abstracts%20away%20the%20physical,system%2C%20middleware%2C%20and%20runtime.
NEW QUESTION # 135
What is a description of a control plane action?
- A. matching the destination IP address of an IP packet to the IP routing table
- B. matching the destination MAC address of an Ethernet frame to the MAC address table
- C. de-encapsulating and re-encapsulating a packet in a data-link frame
- D. hosts locating routers that reside on attached links using the IPv6 Neighbor Discover Protocol
Answer: D
NEW QUESTION # 136
An engineer must design a network for a company that uses OSPF LFA to reduce loops. Which type of loop would be reduced by using this design?
- A. DTP
- B. micro loops
- C. STP
- D. REP
Answer: B
NEW QUESTION # 137
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Cisco 400-007 certification exam is a highly sought-after certification in the IT industry, specifically for network design experts. Cisco Certified Design Expert (CCDE v3.0) Written Exam certification exam is designed to test the skills and knowledge of candidates in designing and implementing advanced network infrastructure solutions. The CCDE v3.0 certification is intended for those who have extensive experience in network design and architecture and are looking to validate their skills and knowledge.
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