[Q204-Q219] Tested Material Used To 400-007 Test Engine Exam Questions in here [May-2026]

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Tested Material Used To 400-007 Test Engine Exam Questions in here [May-2026]

Penetration testers simulate 400-007 exam PDF

To prepare for 400-007 exam, candidates are encouraged to have extensive experience in network design and architecture, as well as a deep understanding of Cisco technologies and solutions. They should also have a strong understanding of industry best practices and be able to apply this knowledge to real-world network design scenarios.

NO.204 Drag and drop the end-to-end network virtualization elements from the left onto the correct network areas on the right.

Explanation

NO.205 Which optimal use of interface dampening on a fast convergence network design is true?

When occasional flaps of long duration occur

When numerous adjacent flaps of very short duration occur

When the router hardware is slower than the carrier delay down detection

When the switch hardware is faster than the debounce timer down detection

Interface dampening is primarily designed to suppress rapid, repetitive interface flaps (high-frequency short- duration flaps), which can cause instability in routing protocols and excessive reconvergence events.
* When many brief interface failures happen, dampening delays the routing protocol’s reaction until the interface remains stable.
* This helps prevent control-plane churn in fast-converging designs.
This approach is emphasized in CCDE v3.1 design principles where balance between stability and convergence is required.
Why other options are incorrect:
* A: Occasional long-duration flaps don’t require dampening.
* C & D: Hardware speed mismatches are better handled by carrier-delay or debounce-timer mechanisms, not dampening.

NO.206 An enterprise organization currently provides WAN connectivity to their branch sites using MPLS technology, and the enterprise network team is considering rolling out SD-WAN services for all sites.
With regards to the deployment planning, drag and drop the actions from the left onto the corresponding steps on the right.

NO.207 An enterprise organization currently provides WAN connectivity to their branch sites using MPLS technology, and the enterprise network team is considering rolling out SD-WAN services for all sites.
With regards to the deployment planning, drag and drop the actions from the left onto the corresponding steps on the right.

Explanation:
Table Description automatically generated with medium confidence

NO.208 A network hacker is trying to interrupt the transport packet on IPSEC. A packet with duplicate sequence numbers is introduced. The customer sends high-priority traffic during this window. Which design parameter should be considered to mitigate this issue?

Classify and Mark duplicate sequence packets.

Apply anti-replay window 4096.

Restrict keywork in IPSEC Tunnel.

Increase QoS shape policy.

NO.209 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?

Fragmented packet with the do-not-fragment bit set

IP packets with broadcast IP source addresses

IP packets with the multicast IP source address

IP packet with the multicast IP destination address

IP packets with identical source and destination IP addresses

IP packets with the destination IP address 0.0.0.0.

NO.210 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?

EoMPLS-based VPLS can carry multicast traffic in a scalable manner

Use a mesh of GRE tunnels to carry the streams between sites

Enable snooping mechanisms on the provider PE routers.

Replace VPLS with a Layer 3 MVPN solution to carry the streams between sites

NO.211 Two companies need to implement an extranet overlay network solution by using a VPN tunnel over the internet to use each other’s HTTP REST APIs. The solution must only provide data integrity because data confidentality will be covered at the application leyer. The existing firewall devices will be used as VPN endpoints for the tunnel, but they have limited available resources.
Which type of VPN tunnel must be deployed for the extranet service?

ipsec esp

ipsec ah

gre tunnel

greoIPsec

The requirement is to provide data integrity only, not confidentiality, because confidentiality is handled at the application layer.
IPSec AH provides authentication and integrity for the IP packets without encrypting the payload, ensuring data integrity but not confidentiality.
Since the firewall devices have limited resources, using IPSec AH (which only provides integrity and authentication but no encryption) reduces processing overhead compared to ESP.
Therefore, IPSec AH is the appropriate choice for a VPN tunnel that ensures data integrity without confidentiality, suitable for resource-constrained firewall endpoints.

NO.212 A network security team observes phishing attacks on a user machine from a remote location. The organization has a policy of saving confidential data on two different systems using different types of authentication. What is the next step to control such events after the security team verifies all users in Zero Trust modeling?

Enforce risk-based and adaptive access policies.

Assess real-time security health of devices.

Apply a context-based network access control policy for users.

Ensure trustworthiness of devices.

NO.213 Refer to the exhibit.

Which impact of using three or more ABRs between the backbone area and area 1 is true?

In a large-scale network LSA replication by all ABRs can cause serious scalability issues

Multiple ABRs reduce the CPU processing on each A6R due to splitting prefix advertisement

In a large-scale network multiple ABRs can create microloops.

Prefixes from the non-backbone area are advertised by one ABR to the backbone

NO.214 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?

Binary indexed explicit routing

Binary intermediate enhanced routing

Bit indexed explicit replication

Bi-directional implicit replication

* Bit Indexed Explicit Replication (BIER) eliminates the need for traditional multicast signaling protocols such as PIM.
* BIER uses IGP extensions (e.g., OSPF or ISIS) to advertise BIER forwarding state.
* The BIER header contains a bit-string indicating directly which receivers should receive the multicast packet, removing the need to build trees via signaling.
This design is emphasized in CCDE v3.1 as a significant advancement for efficient, scalable multicast in large modern service provider and enterprise networks.
Why other options are incorrect:
* A, B, D: These options are invalid or fictitious terms in multicast protocol standards.

NO.215 For a company that offers online billing systems for their customers, which strategy ensures the RPO is kept as low as possible?

cloud backup to mirror data

spare onsite disks

periodic snapshot of data

backup on external storage

NO.216 Network operators have many options available, from fully centralized to fully distributed control planes, and each approach has its own set of characteristics. Drag and drop the characteristics from the left onto the corresponding approach on the right.

NO.217 What is a web-based model in which a third-party provider hosts applications that are available to customers over the Internet?

PaaS

SaaS

laaS

WaaS

NO.218 How must the queue sizes be designed to ensure that an application functions correctly?

Each individual device queuing delay in the chain must be less than or equal to the application required delay.

The queuing delay on every device in the chain must be exactly the same to the application required delay.

The default queue sizes are good for any deployment as it compensates the serialization delay.

The sum of the queuing delay of all devices plus serialization delay in the chain must be less than or equal to the application required delay.

NO.219 You have been asked to design a remote access VPN solution to support up to 2000 devices.
You must ensure that only corporate assets are allowed to connect to the VPN, and users must authenticate to gain access of their based on their user role. Users must use a password that they are already using to access existing applications. A user may not always use the same device to access the VPN.
Which two options combined meet the requirements? (Choose two)

Use local usernames and passwords on the VPN device

Deploy a central authentication directory that users can be authenticated and authorized against

Deploy certificates that are unique to each user

Deploy an IPsec VPN solution

Deploy certificates that are unique to each device

Deploy a SSL VPN solution

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Cisco 400-007 exam is a comprehensive test that covers a wide range of topics related to network design. Candidates are expected to have a deep understanding of network protocols, routing and switching technologies, security, network management, and network optimization. In addition, candidates should have experience in designing networks for large organizations and should be able to demonstrate their ability to create effective and efficient network architectures.

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