[May-2024] The Best CCDE v3.0 400-007 Professional Exam Questions
Try 100% Updated 400-007 Exam Questions [2024]
NEW QUESTION # 154
Company XYZ connects its sites over a private WAN. Their overlay network is running a DMVPN setup where the headquarters site is the hub. The company is planning on implementing multicast routing on the network. What should be used in the multicast routing design?
- A. PIM dense mode with RP located at the hub
- B. PIM sparse mode with RP located at each remote site
- C. PIM sparse mode with RP located at the hub
- D. PIM dense mode with RP located at each remote site
Answer: C
Explanation:
https://www.ccexpert.us/routing-switching-2/dynamic-multipoint-vpn.html
NEW QUESTION # 155
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. Target RPO/RTO requirements cannot be met due to the one-way delay introduced by the distance between sites.
- B. VSANs must be extended from the primary to the secondary site to improve performance and availability.
- C. Synchronous data replication must be used to meet the business requirements
- D. VSANs must be routed between sites to isolate fault domains and increase overall availability.
- E. Asynchronous data replication should be used in this scenario to avoid performance impact in the primary site.
Answer: D,E
NEW QUESTION # 156
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 on the appropriate ASBRS.
- C. route summarization on EIDRP routers connecting toward the ASBR
- D. route summarization the ASBR interfaces facing the OSPF domain
Answer: B
NEW QUESTION # 157
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 delay depends not only on the line rate of the interface but also on the size of the packet
- C. Serialization delays are variable because they depend on the line rate of the interface and on the type of the packet being serialized.
- D. Serialization delay is the time required to transmit the packet on the physical media.
- E. Serialization delays are variable because they depend only on the size of the packet being serialized
Answer: C,E
NEW QUESTION # 158
Company XYZ has 30 sites using MPLS L3 VPN and the company is now concerned about data integrity. The company wants to redesign the security aspect of their network based on these requirements:
* Securely transfer the corporate data over the private WAN
* Use a centralized configuration model.
* Minimize overhead on the tunneled traffic.
Which technology can be used in the new design to meet the company's requirements?
- A. GET VPN
- B. S-VTI
- C. DMVPN
- D. MGRE
Answer: A
NEW QUESTION # 159
Refer to the exhibit.
There are multiple trees in the Cisco FabricPath All switches in the Layer 2 fabric share the same view of each tree. Which two concepts describe how the multicast traffic is load-balanced across this topology? (Choose two )
- A. All trees are utilized at the same level of the traffic rate
- B. The multicast traffic is generally load-balanced across all trees
- C. Every leaf node assigns the specific (S.G) to the same tree.
- D. A specific (S.G) multicast traffic is load-balanced across all trees due to better link utilization efficiency.
- E. A specific (S.G) traffic is not load-balanced
Answer: A,D
NEW QUESTION # 160
As network designer, which option is your main concern with regards to virtualizing multiple network zones into a single hardware device?
- A. Fate sharing
- B. Security
- C. Congestion control
- D. Bandwidth allocation
- E. CPU resource allocation
Answer: A
NEW QUESTION # 161
A business wants to refresh its legacy Frame Relay WAN. It currently has product specialists in each of its 200 branches but plans to reduce and consolidate resources. The goal is to have product specialists available via video link when customers visit the nationwide branch offices. Which technology should be used to meet this objective?
- A. Layer 3 MPLS VPN full mesh
- B. DMVPN phase 1 network over the Internet
- C. Layer2VPLS
- D. Layer 3 MPLS VPN hub and spoke
Answer: A
NEW QUESTION # 162
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. micro loops
- B. DTP
- C. REP
- D. STP
Answer: A
NEW QUESTION # 163
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. Local to global NAT translation is done before policy-based routing
- B. Local to global NAT translation is done after routing
- C. Global to local NAT translation is done after policy-based routing.
- D. Global to local NAT translation is done before routing.
Answer: D
NEW QUESTION # 164
A company plans to use BFD between its routers to detect a connectivity problem inside the switched network. An IPS is transparently installed between the switches. Which packets shold the IPS forward for BFD to work under all circumstances?
- A. IP packets with the destination IP address 0.0.0.0.
- B. IP packets with broadcast IP source addresses
- C. IP packets with the multicast IP source address
- D. IP packets with identical source and destination IP addresses
- E. IP packet with the multicast IP destination address
- F. Fragmented packet with the do-not-fragment bit set
Answer: D
NEW QUESTION # 165
Which effect of using ingress filtering to prevent spoofed addresses on a network design is true?
- A. It Classifies bogon traffic and remarks it with DSCP bulk.
- B. It protects the network Infrastructure against spoofed DDoS attacks.
- C. It reduces the effectiveness of DDoS attacks when associated with DSCP remarking to Scavenger.
- D. It filters RFC 1918 IP addresses.
Answer: B
NEW QUESTION # 166
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 reverts to R1-R2-R3 because this was the previous best path
- C. The path reverts back to R1-R2-R3 because the route type is E1
- D. The path R1-R4-R5-R3 continues to be the best path because OSPF does not compare the metrics between two domains
Answer: B
Explanation:
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
NEW QUESTION # 167
You are designing a large-scale DMVPN network with more than 500 spokes using EIGRP as the IGP protocol Which design option eliminates potential tunnel down events on the spoke routers due to the holding time expiration?
- A. Apply QoS for pak_priority class
- B. Increase the hold queue on the tunnel interface of the spoke routers
- C. Increase the hold queue on the physical interface of the spoke routers.
- D. Increase the hold queue on the tunnel interface of the hub router
- E. Increase the hold queue on the physical interface of the hub router.
Answer: D
NEW QUESTION # 168
A European national bank considers migrating its on-premises systems to a private cloud offering in a non-European location to significantly reduce IT costs. What is a primary factor prior to migration?
- A. security
- B. cloud connectivity
- C. data governance
- D. additional latency
Answer: C
NEW QUESTION # 169
Which two actions ensure voice quality in a branch location with a low-speed, high-latency WAN connection? (Choose two.)
- A. Prioritize voice packets
- B. Increase memory branch switch.
- C. Replace any electrical links with optical links
- D. Increase WAN bandwidth
- E. Fragment data packets.
Answer: A,E
NEW QUESTION # 170
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. MPLS
- B. CWDM
- C. Metro Ethernet
- D. DWDM
Answer: D
NEW QUESTION # 171
Two routers R1 and R2 are directly connected through an Ethernet link. Both routers are running OSPF over the Ethernet link and OSPF has been registered with BFD. R1 has been set up to transmit BFD at a 50 ms interval, but R2 can receive only at a 100 ms rate due to platform limitations. What does this mean?
- A. Timers renegotiate indefinitely, so the timer exchange phase never converges
- B. After the initial timer exchange. R1 sets its transmission rate to the R2 Required Min RX interval
- C. R2 sets the P-bit on all BFD control packets until R2 sends a packet with the F-bit set
- D. After the initial timer exchange. R2 sets its transmission rate to the R1 Desired Min TX interval
Answer: B
NEW QUESTION # 172
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. lt speeds up link failure detection.
- C. It reduces the utilization of system processing resources.
- D. It improves overall network stability.
- E. It switches traffic immediately after a link failure.
Answer: C,D
NEW QUESTION # 173
Which issue poses a challenge for security architects who want end-to-end visibility of their networks?
- A. too many overlapping controls
- B. a network security skills shortage
- C. too many disparate solutions and technology silos
- D. an overabundance of manual processes
Answer: C
NEW QUESTION # 174
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