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Cisco 400-007 exam is a challenging certification exam that requires extensive preparation. Candidates must have a deep understanding of network design principles, protocols, and technologies. They must also have hands-on experience designing and implementing network solutions. To prepare for the exam, candidates should review the Cisco CCDE exam topics, study the Cisco CCDE reference materials, and practice designing and configuring complex networks.
NEW QUESTION # 116
Which two features control multicast traffic in a VLAN environment? (Choose two)
- A. pruning
- B. IGMP snooping
- C. RGMP
- D. PIM snooping
- E. MLD snooping
Answer: B,E
NEW QUESTION # 117
Which service abstracts away the management of the operating system, middleware, and runtime?
- A. laaS
- B. PaaS
- C. SaaS
- D. BMaaS
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 # 118
A customer migrates from a traditional Layer 2 data center network into a new SDN-based spine-and-leaf VXLAN EVPN data center within the same location The networks are joined to enable host migration at Layer 2 What is the final migration step after hosts have physically migrated to have traffic flowing through the new network without changing any host configuration?
- A. Shut down legacy Layer 3 SVIs and activate new preconfigured Layer 3 SVIs on VXLAN
- B. Increase VRRP priorities on new infrastructure over legacy VRRP values, then shut down legacy SVIs
- C. Shut down legacy Layer 3 SVIs. clear ARP caches on all hosts being migrated and then configure the legacy VRRP address onto new VXLAN core switches
- D. Shut down legacy infrastructure to allow VXLAN gateways to become active
Answer: A
NEW QUESTION # 119
A company uses equipment from multiple vendors in a data center fabric to deliver SDN, enable maximum flexibility, and provide the best return on investment. Which YANG data model should be adopted for comprehensive features to simplify and streamline automation for the SDN fabric?
- A. IETF
- B. OpenConfig
- C. proprietary
- D. native
Answer: B
NEW QUESTION # 120
A healthcare customer requested that SNMP traps must be sent over the MPLS Layer 3 VPN service. Which protocol must be enabled?
- A. Syslog
- B. SSH
- C. SNMPv2
- D. SNMPv3
- E. Syslog TLS
Answer: D
NEW QUESTION # 121
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. need for intelligent traffic monitoring
- B. higher operating expense and capital expenditure
- C. exponential growth of resource-intensive application
- D. complex and distributed management flow
Answer: C
NEW QUESTION # 122
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. Services virtualization
- C. Session isolation
- D. Edge isolation
- E. Path isolation
Answer: B,E
NEW QUESTION # 123
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. Synchronous data replication must be used to meet the business requirements
- B. VSANs must be routed between sites to isolate fault domains and increase overall availability.
- C. Asynchronous data replication should be used in this scenario to avoid performance impact in the primary site.
- D. VSANs must be extended from the primary to the secondary site to improve performance and availability.
- E. Target RPO/RTO requirements cannot be met due to the one-way delay introduced by the distance between sites.
Answer: A,C
Explanation:
synchronous data replication must be used to meet the business requirements, is incorrect. As described above, asynchronous replication would be a better choice in this scenario due to the distance between the data center sites and the target RPO/RTO requirements.
asynchronous data replication should be used in this scenario to avoid performance impact in the primary site, is correct. Asynchronous replication would allow Company XYZ to meet the target RPO/RTO requirements while avoiding the performance impact of synchronous replication.
NEW QUESTION # 124
A customer asks you to perform a high level review of their upcoming WAN refresh for remote sites The review is specially focused on their retail store operations consisting of 500+ locations connected via mutlipoint IPsec VPN solution. Which routing protocol would be valid but would also be the most restrictive for the expansion of this deployment model?
- A. OSPF
- B. IS-IS
- C. EIGRP
- D. BGP
Answer: B
NEW QUESTION # 125
Which two factors provide multifactor authentication for secure access to applications and data, no matter where the users are or which devices they are on? (Choose two.)
- A. pull-based
- B. push-based
- C. possession-based
- D. persona-based
- E. power-based
Answer: B,C
NEW QUESTION # 126
An MPLS service provider is offering a standard EoMPLS-based VPLS service to Customer A. providing Layer 2 connectivity between a central site and approximately 100 remote sites. Customer A wants to use the VPLS network to carry its internal multicast video feeds which are sourced at the central site and consist of 20 groups at Mbps each. Which service provider recommendation offers the most scalability?
- A. Use a mesh of GRE tunnels to carry the streams between sites
- B. Replace VPLS with a Layer 3 MVPN solution to carry the streams between sites
- C. EoMPLS-based VPLS can carry multicast traffic in a scalable manner
- D. Enable snooping mechanisms on the provider PE routers.
Answer: B
NEW QUESTION # 127
Refer to the exhibit.
Company XYZ BGP topology is as shown in the diagram. The interface on the LA router connected toward the 10 1.5.0/24 network is faulty and is going up and down, which affects the entire routing domain. Which routing technique can the network administrator use so that the rest of the network is not affected by the flapping issue?
- A. The LA administrator should use route filtering to block the 10.1.5.0/24 network from getting propagated toward Chicago and New York.
- B. The Chicago administrator should use route filtering to block the 10.1.5.0/24 network from coming in from the LA router.
- C. The LA administrator should use route dampening for the 10.1.5 0/24 network so that it does not get propagated when it flaps up and down.
- D. The LA administrator should use route aggregation to summarize the 10 1 4.0/24, 10 1 5 0/24, 10.1.6.0/24, and 10 1 7 0/24 networks toward Chicago
Answer: C
NEW QUESTION # 128
You are designing a network running both IPv4 and IPv6 to deploy QoS Which consideration is correct about the QoS for IPv4 and IPv6?
- A. Different congestion management mechanisms need to be used for IPv4 and IPv6 traffic types
- B. IPv6 and IB/4 traffic types can use a single QoS policy to match both protocols
- C. IPv4 and IPv6 traffic types can use use queuing mechanisms such as LLQ, PQ and CQ.
- D. IPv6 packet classification is only available with process switching, whereas IPv4 packet classification is available with both process switching and CEF.
Answer: B
NEW QUESTION # 129
You are designing the routing design for two merging companies that have overlapping IP address space. Which of these must you consider when developing the routing and NAT design?
- A. Global to local NAT translation is done before routing.
- B. Local to global NAT translation is done before policy-based routing
- C. Global to local NAT translation is done after policy-based routing.
- D. Local to global NAT translation is done after routing
Answer: A
NEW QUESTION # 130
Which design solution reduces the amount of IGMP state in the network?
- A. multiple multicast domains
- B. IGMP filtering
- C. IGMPv3 with PIM-SSM
- D. one multicast group address thorough network regardless of IGMP version
Answer: B
NEW QUESTION # 131
Company XYZ wants to improve the security design of their network to include protection from reconnaissance and DoS attacks on their sub interfaces destined toward next hop routers. Which technology can be used to prevent these types of attacks?
- A. CoPP
- B. DPP
- C. MPP
- D. CPPr
Answer: D
NEW QUESTION # 132
What are two examples of components that are part of an SDN architecture? (Choose two.)
- A. application plane
- B. management plane
- C. software plane
- D. control plane
- E. network plane
Answer: B,D
NEW QUESTION # 133
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. The access layer switches must support IGMP snooping at a minimum. Any switches that do not support IGM snooping must be replaced.
- B. Upgrade the nonsupporting switches Otherwise, it will cause an issue with the migration.
- C. Layer 2 switches will not affect the implementation of IPv6. They can be included in the design in their current state.
- D. The access layer switches must support DHCPv6. Any switches that do not support DHCPv6 must be replaced.
Answer: C
NEW QUESTION # 134
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. MED
- B. As path
- C. community
- D. local preference
Answer: D
NEW QUESTION # 135
A multicast network is sing Bidirectional PIM. Which two combined actions achieve high availability so that two RPs within the same network can act in a redundant manner? (Choose two)
- A. Use two phantom RP addresses
- B. Manipulate the multicast routing table by creating static mroutes to the two RPs
- C. Manipulate the administration distance of the unicast routes to the two RPs
- D. Use anycast RP based on MSDP peering between the two RPs
- E. Advertise the two RP addresses in the routing protocol
- F. Control routing to the two RPs through a longest match prefix
Answer: A,F
NEW QUESTION # 136
Company XYZ wants to improve the security design of their network to include protection from reconnaissance and DoS attacks on their sub interfaces destined toward next hop routers. Which technology can be used to prevent these types of attacks?
- A. CoPP
- B. DPP
- C. MPP
- D. CPPr
Answer: D
Explanation:
https://learningnetwork.cisco.com/s/question/0D53i00000KsuyvCAB/copp-vs-cppr
NEW QUESTION # 137
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 RPk8t8ck against the multicast receiver.
- B. It is switched due to a successful RPF check against the routing table
- C. It is switched give that no RPF check is performed
- D. It is dropped due to an unsuccessful RPF check against the multicast source
Answer: B
Explanation:
https://www.cisco.com/c/en/us/support/docs/ip/ip-multicast/16450-mcastguide0.html When a multicast packet arrives on an interface, the RPF process checks to ensure that this incoming interface is the outgoing interface used by unicast routing in order to reach the source of the multicast packet. This RPF check process prevents loops. Multicast routing does not forward a packet unless the source of the packet passes a RPF check. Once a packet passes this RPF check, multicast routing forwards the packet based only upon the destination address.
NEW QUESTION # 138
Which solution component helps to achieve rapid migration to the cloud for SaaS and public cloud leveraging SD-WAN capabilities?
- A. service-oriented cloud architecture
- B. Cloud onramp
- C. microservices in the cloud
- D. cloud registry
Answer: B
NEW QUESTION # 139
An engineer is designing the QoS strategy for Company XYZ. Based on initial analysis, a lot of scavenger type of traffic is traversing the network's 20Mb Internet link toward the service provider. The new design must use a QoS technique that limits scavenger traffic to 2 Mbps, which helps avoid oversubscription of the link during times of congestion. Which QoS technique can be used to facilitate this requirement?
- A. LLQ
- B. CBWFQ
- C. class-based traffic policing
- D. class-based traffic shaping
Answer: B
NEW QUESTION # 140
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Cisco Certified Design Expert (CCDE) certification is highly respected in the industry and is recognized as a benchmark for excellence in network design. The CCDE certification program is designed to help network professionals demonstrate their expertise in designing complex networks that meet the needs of modern businesses. The CCDE certification requires candidates to pass both a written and practical exam, and it is intended for experienced network designers who have a deep understanding of network protocols, technologies, and design principles.
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