CISCO 400-007 Cisco Certified Design Expert Free Practice Test — 30 Questions

Question 1

In a project involving the deployment of a new network infrastructure for a multinational corporation, the project manager is tasked with ensuring effective communication among various stakeholders, including IT staff, management, and external vendors. The project manager decides to implement a stakeholder communication plan that outlines the frequency, methods, and types of information to be shared. Which of the following strategies would best enhance stakeholder engagement and ensure that all parties are adequately informed throughout the project lifecycle?

Accepted Answer

Establishing regular status meetings and utilizing a project management tool for real-time updates.

Question 2

A multinational company processes personal data of EU citizens for marketing purposes. They have implemented a data protection impact assessment (DPIA) to evaluate risks associated with their data processing activities. During the assessment, they identified that the data processing could potentially lead to high risks for the rights and freedoms of individuals. According to the General Data Protection Regulation (GDPR), what should the company do next to ensure compliance with Article 35, which governs DPIAs?

Accepted Answer

Consult with the relevant supervisory authority before proceeding with the data processing activities.

Question 3

In a corporate environment, a company implements a multi-layered security strategy known as Defense in Depth to protect its sensitive data. The strategy includes physical security measures, network security controls, endpoint protection, and application security. If a security breach occurs at the application layer, which of the following measures would most effectively mitigate the impact of the breach while ensuring that other layers remain intact and functional?

Accepted Answer

Implementing a Web Application Firewall (WAF) to filter and monitor HTTP traffic

Question 4

In a Software-Defined Networking (SDN) environment, a network engineer is tasked with optimizing the data flow between multiple data centers that are geographically dispersed. The engineer decides to implement a centralized control plane to manage the network resources dynamically. Given this scenario, which of the following best describes the primary advantage of using a centralized control plane in SDN for this purpose?

Accepted Answer

It allows for real-time adjustments to network policies based on traffic patterns and application requirements.

Question 5

In a large enterprise network, the design team is tasked with ensuring that the network remains manageable as it scales. They are considering implementing a hierarchical network design model. Which of the following best describes the advantages of using a hierarchical model in terms of manageability, particularly when addressing issues such as troubleshooting, scalability, and redundancy?

Accepted Answer

The hierarchical model allows for clear separation of functions, making it easier to isolate and troubleshoot issues, while also providing a structured approach to scaling and redundancy through distinct layers such as core, distribution, and access layers.

Question 6

A network engineer is tasked with evaluating the performance of a newly deployed VoIP system across a corporate network. The engineer measures the round-trip time (RTT) for packets sent from a VoIP phone to the server and back, which averages 150 ms. Additionally, the engineer notes that the jitter, which is the variation in packet arrival time, averages 30 ms. Given that the acceptable limits for VoIP quality are an RTT of less than 200 ms and jitter of less than 20 ms, what can be concluded about the performance of the VoIP system based on these metrics?

Accepted Answer

The VoIP system is experiencing performance issues due to high jitter.

Question 7

In a corporate network, a network engineer is tasked with implementing Quality of Service (QoS) to ensure that voice traffic is prioritized over regular data traffic. The engineer decides to use Differentiated Services Code Point (DSCP) values to classify and mark packets. If the voice traffic is assigned a DSCP value of 46 and the data traffic is assigned a DSCP value of 0, what is the expected outcome in terms of bandwidth allocation and latency for both types of traffic when the network experiences congestion?

Accepted Answer

Voice traffic will receive higher priority, resulting in lower latency and guaranteed bandwidth allocation compared to data traffic.

Question 8

In a large enterprise network, the design team is tasked with implementing a new routing protocol to enhance manageability and scalability. They are considering OSPF (Open Shortest Path First) and EIGRP (Enhanced Interior Gateway Routing Protocol). The network consists of multiple areas, and the team needs to ensure that the routing protocol can efficiently handle the distribution of routing information while minimizing overhead. Which routing protocol would be more suitable for this scenario, considering the need for hierarchical design and efficient resource utilization?

Accepted Answer

OSPF

Question 9

In a corporate environment, a network administrator is tasked with implementing an Intrusion Detection and Prevention System (IDPS) to enhance the security posture of the organization. The administrator must choose between two types of IDPS: a network-based IDPS (NIDPS) and a host-based IDPS (HIDPS). The organization has a mix of critical servers and user workstations, and the administrator needs to ensure that the IDPS can effectively monitor and respond to threats across the entire network. Considering the strengths and weaknesses of both types of IDPS, which approach would provide the most comprehensive protection against both external and internal threats while minimizing false positives?

Accepted Answer

Implementing a hybrid approach that combines both NIDPS and HIDPS for layered security.

Question 10

In the context of ISO/IEC standards, a company is evaluating its compliance with ISO/IEC 27001, which outlines requirements for an information security management system (ISMS). The organization has identified several risks associated with its information assets and is considering implementing a risk treatment plan. Which of the following best describes the process that the organization should follow to ensure that its risk treatment plan aligns with ISO/IEC 27001 requirements?

Accepted Answer

Conduct a risk assessment to identify, analyze, and evaluate risks, followed by selecting appropriate risk treatment options based on the organization's risk appetite and the effectiveness of existing controls.

Question 11

In a corporate network, a design engineer is tasked with implementing Quality of Service (QoS) to ensure that voice traffic is prioritized over regular data traffic. The engineer decides to classify and mark packets using Differentiated Services Code Point (DSCP) values. If the voice traffic is assigned a DSCP value of 46, what is the expected behavior of the network devices when handling this traffic, and how does this relate to the overall QoS design principles?

Accepted Answer

The network devices will treat the voice traffic with high priority, ensuring minimal latency and jitter.

Question 12

In a corporate environment, a company is implementing a new Identity and Access Management (IAM) system to enhance security and streamline user access. The system will utilize role-based access control (RBAC) to assign permissions based on user roles. The company has identified three roles: Administrator, Manager, and Employee. Each role has specific permissions associated with it. The Administrator role can create, read, update, and delete resources, while the Manager role can read and update resources but cannot delete them. The Employee role can only read resources. If a new employee is hired and assigned the Employee role, what would be the implications for their access to sensitive data, and how should the IAM system be configured to ensure compliance with the principle of least privilege?

Accepted Answer

The Employee role should be configured to allow read access only to non-sensitive data, ensuring that sensitive data remains protected and complies with the principle of least privilege.

Question 13

In a corporate environment implementing a Zero Trust Security Model, a security analyst is tasked with evaluating the effectiveness of the current access control policies. The organization has multiple user roles, including administrators, regular employees, and contractors, each requiring different levels of access to sensitive data. The analyst needs to ensure that access is granted based on the principle of least privilege and that all access requests are authenticated and authorized. Which approach should the analyst prioritize to enhance the security posture while adhering to the Zero Trust principles?

Accepted Answer

Implementing role-based access control (RBAC) with continuous monitoring of user activities and adaptive authentication mechanisms.

Question 14

In a Cisco ACI environment, you are tasked with designing a multi-tenant architecture that requires the implementation of Application Profiles and Endpoint Groups (EPGs). You need to ensure that the application traffic is segmented correctly while allowing for specific communication between different EPGs. Given the following requirements: EPG A should communicate with EPG B and EPG C, but EPG B should not communicate with EPG C. Which configuration approach would best achieve this while adhering to Cisco ACI\'s principles of policy-driven automation?

Accepted Answer

Create a contract between EPG A and EPG B, and another contract between EPG A and EPG C. Do not create a contract between EPG B and EPG C.

Question 15

A software development company is evaluating different cloud service models to optimize their application deployment and management. They are considering Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS) for their new project. The project requires a high degree of customization and control over the underlying infrastructure, as well as the ability to develop and deploy applications rapidly. Given these requirements, which cloud service model would best suit their needs?

Accepted Answer

Infrastructure as a Service (IaaS)

Question 16

In a corporate network, a firewall is configured to manage traffic between the internal network and the internet. The firewall uses a combination of stateful inspection and access control lists (ACLs) to determine which packets are allowed through. During a security audit, it is discovered that certain types of traffic, specifically HTTP and HTTPS, are being blocked intermittently. The network administrator needs to ensure that legitimate web traffic is allowed while still maintaining security. Which approach should the administrator take to resolve this issue effectively?

Accepted Answer

Review and adjust the ACLs to ensure that rules for HTTP and HTTPS traffic are correctly prioritized and not conflicting with other rules.

Question 17

In a Cisco ACI environment, you are tasked with designing a multi-tenant architecture that requires the implementation of Application Profiles and Endpoint Groups (EPGs). You need to ensure that the application traffic is segmented properly while allowing for specific communication between EPGs. Given the following requirements: Tenant A must communicate with Tenant B for specific services, but all other traffic should be isolated. Additionally, you need to implement contracts to control the communication between these EPGs. Which design approach would best achieve this while adhering to Cisco ACI principles?

Accepted Answer

Create separate Application Profiles for Tenant A and Tenant B, and define a contract that allows only the necessary communication between the EPGs of both tenants while denying all other traffic.

Question 18

In a corporate environment, a network security engineer is tasked with implementing a multi-layered security architecture to protect sensitive data from unauthorized access. The architecture includes firewalls, intrusion detection systems (IDS), and encryption protocols. The engineer must ensure that the data remains secure during transmission over the internet. Which combination of technologies and practices would best enhance the security of data in transit while maintaining compliance with industry standards such as PCI DSS and GDPR?

Accepted Answer

Implementing TLS (Transport Layer Security) for data encryption, using a Web Application Firewall (WAF) to filter traffic, and conducting regular security audits.

Question 19

In a programmable network environment, a network engineer is tasked with designing a solution that dynamically adjusts bandwidth allocation based on real-time traffic patterns. The engineer decides to implement a software-defined networking (SDN) approach using OpenFlow. Given a scenario where the network experiences a sudden spike in video streaming traffic, which of the following strategies would best optimize the network\'s performance while ensuring minimal disruption to other services?

Accepted Answer

Implement dynamic flow rules that prioritize video traffic and allocate additional bandwidth to the video streaming application while temporarily throttling less critical services.

Question 20

In a cloud-based infrastructure deployment, a company is implementing Infrastructure as Code (IaC) to manage its resources. They are using a configuration management tool to automate the provisioning of virtual machines (VMs) and their associated networking components. The company has a requirement to ensure that all VMs are deployed with specific configurations, including CPU, memory, and storage. If the company decides to use a declarative approach to IaC, which of the following statements best describes the implications of this choice on the deployment process?

Accepted Answer

The declarative approach allows the company to define the desired state of the infrastructure, and the IaC tool will automatically determine how to achieve that state, abstracting the underlying implementation details.

Question 21

In a large organization, the IT department is tasked with designing a collaboration solution that integrates various communication tools, including video conferencing, instant messaging, and project management software. The goal is to enhance team productivity and ensure seamless communication across different departments. Given the need for scalability, security, and user adoption, which design principle should be prioritized to ensure that the collaboration solution meets the organization\'s requirements effectively?

Accepted Answer

User-centric design that prioritizes ease of use and accessibility for all employees

Question 22

A network engineer is tasked with optimizing the performance of a data center that is experiencing latency issues during peak traffic hours. The engineer decides to implement Quality of Service (QoS) policies to prioritize critical applications. If the total bandwidth of the network is 1 Gbps and the engineer allocates 60% of the bandwidth to critical applications, how much bandwidth (in Mbps) is reserved for these applications? Additionally, if the remaining bandwidth is to be shared equally among five non-critical applications, how much bandwidth (in Mbps) will each non-critical application receive?

Accepted Answer

600 Mbps for critical applications and 80 Mbps for each non-critical application

Question 23

In a Software-Defined Networking (SDN) environment, a network engineer is tasked with optimizing the data flow between multiple data centers that are geographically distributed. The engineer decides to implement a centralized control plane to manage the network resources dynamically. Given the following scenarios, which one best illustrates the advantages of using a centralized control plane in SDN for this purpose?

Accepted Answer

The centralized control plane allows for real-time monitoring and adjustment of traffic flows based on current network conditions, enabling efficient load balancing and reduced latency across the data centers.

Question 24

In a multi-tier application architecture, a company is evaluating its resiliency strategy to ensure high availability and minimal downtime during unexpected failures. The application consists of a web tier, application tier, and database tier, each hosted on separate servers. The company decides to implement a load balancer in front of the web tier and a failover mechanism for the database tier. If the load balancer distributes incoming traffic evenly across three web servers and one of the servers goes down, what will be the new traffic distribution among the remaining servers, assuming the total incoming traffic is 300 requests per minute?

Accepted Answer

150 requests to each of the two remaining servers

Question 25

In a large enterprise network design, a company is planning to implement a hierarchical network architecture to improve scalability and manageability. The design includes three layers: Core, Distribution, and Access. The company anticipates that the Access layer will need to support 500 devices, each requiring an average of 10 Mbps of bandwidth. Given that the Distribution layer can aggregate traffic from multiple Access layer switches, what is the minimum bandwidth requirement for the Distribution layer to ensure optimal performance, considering a 20% overhead for network management and redundancy?

Accepted Answer

6 Gbps

Question 26

In a project involving the deployment of a new network infrastructure for a multinational corporation, the project manager is tasked with ensuring effective communication with various stakeholders, including IT staff, management, and external vendors. The project manager decides to implement a stakeholder communication plan that outlines the frequency, methods, and types of information to be shared. Which of the following strategies would best enhance stakeholder engagement and ensure that all parties are adequately informed throughout the project lifecycle?

Accepted Answer

Establishing regular status update meetings and utilizing a project management tool for real-time updates on project progress and issues.

Question 27

A financial services company is in the process of developing its Business Continuity Plan (BCP) to ensure operational resilience in the event of a disaster. The company has identified several critical functions that must be maintained during a disruption, including transaction processing, customer service, and data management. The BCP team is tasked with determining the Recovery Time Objective (RTO) for each function. If the RTO for transaction processing is set at 4 hours, customer service at 2 hours, and data management at 6 hours, what is the overall RTO for the company if it aims to restore all critical functions simultaneously?

Accepted Answer

6 hours

Question 28

In the context of designing a network for a multinational corporation, the design documentation must include various elements to ensure clarity and compliance with industry standards. If the design documentation is structured to include a detailed network topology diagram, a comprehensive list of hardware specifications, a risk assessment matrix, and a change management plan, which of these elements is most critical for ensuring that the network can be effectively maintained and scaled over time?

Accepted Answer

A change management plan

Question 29

In the context of the Cisco Design Lifecycle, a network architect is tasked with designing a new enterprise network for a growing company that anticipates a 30% increase in user traffic over the next two years. The architect must consider scalability, security, and performance while adhering to the Cisco Design Lifecycle phases. Which phase of the Cisco Design Lifecycle should the architect focus on to ensure that the design accommodates future growth and aligns with the company\'s strategic goals?

Accepted Answer

The Implementation phase

Question 30

In a 5G network architecture, consider a scenario where a mobile operator is implementing network slicing to optimize resource allocation for different services such as IoT, enhanced mobile broadband (eMBB), and ultra-reliable low-latency communications (URLLC). If the operator allocates a total bandwidth of 100 MHz across three slices with the following distribution: 50 MHz for eMBB, 30 MHz for URLLC, and 20 MHz for IoT, what is the maximum data rate that can be achieved for each service if the modulation scheme used allows for 4-QAM (Quadrature Amplitude Modulation) with a spectral efficiency of 2 bits/Hz?

Accepted Answer

eMBB: 100 Mbps, URLLC: 60 Mbps, IoT: 40 Mbps

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