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Best CCDE 400-007 Practice Exams and Exam Preparation Materials, CCDE Written exam | SPOTO

Elevate your CCDE 400-007 certification preparation with SPOTO's mock tests designed specifically for the CCDE Written exam. This exam, CCDE v3.0 Written (400-007), evaluates your ability to gather and clarify network functional requirements, develop network designs, create implementation plans, and articulate design decisions effectively. Our high-quality practice tests, exam questions with answers, and exam dumps cover key areas such as business strategy design, control, data, and management plane design, network design, service design, and security design. Take advantage of our exam simulator for realistic exam practice and access sample questions to assess your readiness. Prepare confidently with SPOTO's exam materials and answers, ensuring you're well-prepared to excel in the CCDE Written exam.
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Question #1
Which two statements describe the usage of the IS-IS overload bit technique? (Choose two )
A. lf overload-bit is set on a Level 2 intermediate system, the other Level 2 intermediate systems inthe topology will stop using the overloaded IS to forward Level 2 traffic However, the intermediatesystem can still forward Level 1 traffic
B. It can be set in intermediate systems (IS-IS routers) to prioritize control plane CSNP packets
C. It can be used to automatically synchronize the link-state database between Level 1 intermediatesystems
D. It can be set in intermediate systems (IS-IS routers) to avoid traffic black holes until routingprotocols are fully converged after a reload operation
E. It can be set in intermediate systems (IS-IS routers) to attract transit traffic from otherintermediate systems
View answer
Correct Answer: BC

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Question #2
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. IPv4 and IPv6 traffic types can use use queuing mechanisms such as LLQ, PQ and CQ
B. IPv6 packet classification is only available with process switching, whereas IPv4 packetclassification is available with both process switching and CEF
C. IPv6 and IB/4 traffic types can use a single QoS policy to match both protocols
D. Different congestion management mechanisms need to be used for IPv4 and IPv6 traffic types
View answer
Correct Answer: C
Question #3
You were tasked to enhance the security of a network with these characteristics: - A pool of servers is accessed by numerous data centers and remote sites - The servers are accessed via a cluster of firewalls - The firewalls are configured properly and are not dropping traffic - The firewalls occasionally cause asymmetric routing of traffic within the server data center. Which technology should you recommend to enhance security by limiting traffic that could originate from a hacker compromising a workstatio
A. Poison certain subnets by adding static routes to Null0 on the core switches connected to thepool of servers
B. Deploy uRPF strict mode
C. Limit sources of traffic that exit the server-facing interface of the firewall cluster with ACLs
D. Deploy uRPF loose mode
View answer
Correct Answer: C
Question #4
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 migration is estimated to take 20 months to complete but might extend an additional 10 months if issues arise. All connectivity options meet the requirements to migrate workloads. Which transport technology provides the best ROI based on cost and flexibility?
A. CWDM over dark fiber
B. MPLS
C. DWDM over dark fiber
D. Metro Ethernet
View answer
Correct Answer: D
Question #5
As part of a new network design documentation, you are required to explain the reason for choosing cisco FabricPath for Layer 2 loop avoidance. Which two elements help Cisco FabricPath mitigate Layer 2 loops if they happen in the Layer 2 MP network? (Choose two)
A. MAC tunneling
B. IS-IS multipath
C. RPF check
D. TTL header
View answer
Correct Answer: D
Question #6
Which protocol does an SD-Access wireless Access Point use for its fabric data plane?
A. GRE
B. MPLS
C. VXLAN
D. LISP
E. CAPWAP
View answer
Correct Answer: CD
Question #7
When designing a WAN that will be carrying real-time traffic, what are two important reasons to consider serialization delay? (Choose two )
A. Serialization delays are invariable because they depend only on the line rate of the interface
B. Serialization delays are variable because they depend on the line rate of the interface and on thetype of the packet being serialized
C. Serialization delay is the time required to transmit the packet on the physical media
D. Serialization delays are variable because they depend only on the size of the packet beingserialized
E. Serialization delay depends not only on the line rate of the interface but also on the size of thepacket
View answer
Correct Answer: AD
Question #8
You are designing a new Ethernet-based metro-area network for an enterprise customer to connect 50 sites within the same city OSPF will be the routing protocol used. The customer is primarily concerned with IPv4 address conservation and convergence time. Which two combined actions do you recommend? (Choose two)
A. Use a multipoint Metro-E service for router connections
B. Use a single address per router for all P2P links
C. Use P2P links between routers in a hub-and-spoke design
D. Configure address aggregation at each site router
E. Determine which OSPF routers will be DR/BDR
View answer
Correct Answer: A
Question #9
Refer to the exhibit. AJI links are P2P Layer 3. A high availability application is synchronizing data between host A and host
B. To increase chance of delivery the same data is sent twice from host A on two different NICs toward the two NICs on host
B. Which solution must be deployed in the network to ensure that any failure in the network does not trigger data loss on host B?
A. EIGRP with feasible successors
B. BFD
C. IP Fast Reroute
D. Static routes
View answer
Correct Answer: C
Question #10
Company XYZ network runs IPv4 and IPv6 and they want to Introduce a multidomain, multicastbased network. The new design should use a flavor of PIM that forwards traffic using SPT. Which technology meets this requirement?
A. PIM-DM
B. PIM-SM
C. PIM-SSM
D. BIDIR-PIM
View answer
Correct Answer: AD
Question #11
The Company XYZ network is experiencing attacks against their router. Which type of Control Plane Protection must be used on the router to protect all control plane IP traffic that is destined directly for one of the router interfaces?
A. Control Plane Protection host subinterface
B. Control Plane Protection main interface
C. Control Plane Protection transit subinterface
D. Control Plane Protection CEF-exception subinterface
View answer
Correct Answer: A
Question #12
Which MPLS TE design consideration is true?
A. MPLS TE replaces LDP and the dependency of the IGP to identify the best path
B. MPLS TE provides link and node protection
C. MPLS TE optimizes the routing of IP traffic, given the constraints imposed by backbone capacityand application requirements
D. MPLS TE requires Layer 3 VPN full-mesh topology deployment
View answer
Correct Answer: AC
Question #13
Which two data plane hardening techniques are true? (Choose two)
A. warning banners
B. redundant AAA servers
C. Control Plane Policing
D. SNMPv3
E. routing protocol authentication
View answer
Correct Answer: EF
Question #14
Which mechanism provides Layer 2 fault isolation between data centers?
A. fabric path
B. OTL
C. advanced VPLS
D. LISP
E. TRILL
View answer
Correct Answer: B
Question #15
The enterprise customer wants to stream one-way video from their head office to eight branch offices using multicast. Their current service provider provides a Layer3 VPN solution and manages the CE routers, but they do not currently support multicast. Which solution quickly allows this multicast traffic to go through while allowing for future scalability?
A. Enable a GRE tunnel between nodes CE1 and CE2
B. Enable a GRE tunnel between nodes C2 and C4
C. Enable a GRE tunnel between nodes C1 and C4
D. Implement hub and spoke MPLS VPN over DMVPN (also known as 2547o DMVPN) between CE1and CE2
E. The service provider must provide a Draft Rosen solution to enable a GRE tunnel between nodesPE1 and PE2
View answer
Correct Answer: B
Question #16
An engineer is designing the network for a multihomed customer running in AS 111 does not have any other Ass connected to it. Which technology is more comprehensive to use in the design to make sure that the AS is not being used as a transit AS?
A. Configure the AS-set attribute to allow only routes from AS 111 to be propagated to the neighborASs
B. Use the local preference attribute to configure your AS as a non-transit'' AS
C. include an AS path access list to send routes to the neighboring ASs that only have AS 111 in theAS path field
D. Include a prefix list to only receive routes from neighboring ASs
View answer
Correct Answer: C
Question #17
Refer to the exhibit. OSPF is running as the IGP to provide reachability to all AS100 networks. R3 and R4 are the current ABRs at the boundary of OSPF Area0 and Areal. Now BGP must be deployed within AS 100 because it will be receiving. Internet routes from its eBGP peers (the service provider) connected to R1 and R2. What is an optimal solution for this deployment to configure BGP relationships and redistribute BGP learned routes into OSPF?
A. R5 should be configured as a route reflector for R1, R2, R3 and R4
B. Configuration should be set up with R1 and R2, and R3 in one sub AS, with and R4 in another,and redistribution at R1 and R2
C. A full mesh should be deployed between all the routers with mutual redistribution to take place atR1 and R2
D. R1, R2, R3 and R4 must be set up with a neighbor relationship with R5 only must not be a routereflector
View answer
Correct Answer: C
Question #18
Company XYZ Is running a redundant private WAN network using OSPF as the underlay protocol. The current design accommodates for redundancy. In the network, but it Is taking over 30 seconds for the network to reconverge upon failure. Which technique can be Implemented In the design to detect such a failure in a subsecond?
A. STP
B. fate sharing
C. OSPF LFA
D. BFD
E. flex links
View answer
Correct Answer: AE
Question #19
Refer to the diagram. Which solution must be used to send traffic from the foreign wireless LAN controller to the anchor wireless LAN controller?
A. Send packets from the foreign controller to the anchor controller via Layer 3 MPLS VPN or VRFLite
B. Send packets without encapsulation to the anchor controller over the routed network
C. Encapsulate packets into an EoIP tunnel and send them to the anchor controller
D. Send packets from the foreign controller to the anchor controller via IPinIP or IPsec tunnel
View answer
Correct Answer: C
Question #20
Which statement about hot-potato routing architecture design is true?
A. Hot-potato routing is the preferred architecture when connecting to content providers
B. Hop-potato keeps traffic under the control of the network administrator for longer
C. OSPF uses hot-potato routing if all ASBRs use the same value for the external metric
D. Hot-potato routing is prone to misconfiguration as well as poor coordination between twonetworks
View answer
Correct Answer: B
Question #21
Which two impacts of adding the IP event dampening feature to a network design are true? (Choose two.)
A. It protects against routing loops
B. It switches traffic immediately after a link failure
C. lt speeds up link failure detection
D. It reduces the utilization of system processing resources
E. It improves overall network stability
View answer
Correct Answer: DE

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