CISCO 500-452 Enterprise Networks Core and WAN Exam Free Practice Test — 30 Questions

Question 1

In a corporate environment, a network engineer is tasked with improving security and performance by implementing network segmentation. The company has multiple departments, including HR, Finance, and IT, each requiring different levels of access to sensitive data. The engineer decides to use VLANs (Virtual Local Area Networks) to achieve this segmentation. If the HR department needs access to a specific server that contains employee records, while the Finance department requires access to a different server for financial data, what is the most effective way to configure the VLANs to ensure both security and performance without compromising access?

Accepted Answer

Create separate VLANs for HR and Finance, and implement ACLs (Access Control Lists) to restrict access to the respective servers.

Question 2

A company is planning to deploy a new wireless network across its office building, which has multiple floors and a large open area. The IT team is considering the placement of access points (APs) to ensure optimal coverage and performance. They have determined that each access point can cover a circular area with a radius of 30 meters. If the building has a total area of 3,600 square meters, how many access points should the team deploy to ensure complete coverage, assuming no overlap in coverage areas?

Accepted Answer

4

Question 3

A company is planning to deploy a new wireless network across a large office space that measures 10,000 square feet. The office layout includes several walls, cubicles, and conference rooms. The network engineer needs to determine the optimal placement of access points (APs) to ensure adequate coverage and minimize interference. Given that each access point can effectively cover an area of approximately 2,000 square feet in an unobstructed environment, what is the minimum number of access points required to achieve full coverage of the office space, considering that walls and furniture may reduce the effective coverage area by 30%?

Accepted Answer

5

Question 4

In a corporate network, a router is configured to manage traffic between multiple VLANs. The router uses inter-VLAN routing to facilitate communication. If the router has three VLANs configured with the following IP subnets: VLAN 10 (192.168.10.0/24), VLAN 20 (192.168.20.0/24), and VLAN 30 (192.168.30.0/24), how does the router determine the best path for a packet originating from a device in VLAN 10 destined for a device in VLAN 30? Assume that the router uses a static routing configuration and that the default gateway for each VLAN is set correctly.

Accepted Answer

The router uses its routing table to look up the destination IP address and forwards the packet based on the longest prefix match.

Question 5

In a service provider network utilizing MPLS (Multiprotocol Label Switching), a customer requests a bandwidth of 10 Mbps for their virtual private network (VPN) service. The service provider uses a traffic engineering approach to allocate bandwidth efficiently across multiple paths. If the total available bandwidth on the MPLS network is 100 Mbps and the provider has to ensure that at least 20% of the total bandwidth is reserved for other services, what is the maximum number of customers that can be supported with the requested bandwidth without exceeding the reserved bandwidth limit?

Accepted Answer

8

Question 6

In a service provider network utilizing MPLS (Multiprotocol Label Switching), a customer requests a bandwidth guarantee of 10 Mbps for their traffic. The service provider uses a traffic engineering approach to allocate resources efficiently. If the provider has a total of 100 Mbps available in a given MPLS path and decides to allocate bandwidth based on the ratio of requested bandwidth to total available bandwidth, what percentage of the total bandwidth will be allocated to this customer? Additionally, if the provider has 5 other customers with similar requests, how much bandwidth will be left unallocated after fulfilling all requests?

Accepted Answer

10% allocated, 40 Mbps unallocated

Question 7

A multinational corporation is designing a Wide Area Network (WAN) to connect its headquarters in New York, a branch office in London, and a remote site in Tokyo. The company requires a solution that ensures high availability and low latency for real-time applications such as video conferencing and VoIP. The network design team is considering three different WAN technologies: MPLS, VPN over the Internet, and leased lines. Given the requirements for performance and reliability, which WAN technology would best meet the needs of the corporation?

Accepted Answer

MPLS (Multiprotocol Label Switching)

Question 8

In a network utilizing the TCP/IP protocol suite, a company is experiencing issues with data transmission reliability. They have implemented a TCP connection between two hosts, Host A and Host B. Host A sends a stream of data packets to Host B, but some packets are lost during transmission. To address this, Host A employs a mechanism to ensure that all packets are received correctly. Which of the following best describes the mechanism used by Host A to manage packet loss and ensure reliable data transmission?

Accepted Answer

TCP's acknowledgment and retransmission mechanism

Question 9

A network engineer is troubleshooting a connectivity issue in a corporate environment where users are unable to access a critical application hosted on a remote server. The engineer follows a systematic troubleshooting methodology. After verifying physical connections and confirming that the server is operational, the engineer uses a ping test to check connectivity to the server\'s IP address. The ping test returns a \"Request timed out\" message. What should the engineer\'s next step be in the troubleshooting process to effectively isolate the problem?

Accepted Answer

Check the routing table on the local router to ensure there is a valid route to the server's network.

Question 10

In a large enterprise network, the IT department is tasked with creating a comprehensive documentation standard to ensure consistency and clarity across all network diagrams and configurations. They decide to implement a standardized format that includes elements such as device types, IP addressing schemes, and connection types. Which of the following best describes the primary benefit of adhering to such documentation standards in network management?

Accepted Answer

Enhanced communication and collaboration among team members and stakeholders

Question 11

In a large enterprise network, a network administrator is tasked with monitoring traffic patterns to identify potential bottlenecks and security threats. The administrator decides to implement a combination of SNMP (Simple Network Management Protocol) and NetFlow for comprehensive monitoring. Given that the network consists of multiple routers and switches, how should the administrator configure these tools to ensure effective data collection and analysis?

Accepted Answer

Configure SNMP to collect performance metrics from all devices and use NetFlow to analyze traffic flows at the router level.

Question 12

In a corporate network that is transitioning from IPv4 to IPv6, the network administrator is tasked with designing a subnetting scheme for a new department that requires 50 hosts. The administrator decides to use a /64 subnet for this department. How many subnets can be created from the available IPv6 address space, and what is the maximum number of hosts that can be accommodated in each subnet?

Accepted Answer

18,446,744,073,709,551,616 hosts per subnet

Question 13

In a network utilizing Enhanced Interior Gateway Routing Protocol (EIGRP), a network engineer is tasked with optimizing the routing performance between two routers, Router A and Router B, which are connected over a WAN link. The link has a bandwidth of 1.5 Mbps and a delay of 20 ms. The engineer decides to adjust the EIGRP metrics to improve the route selection process. If the default EIGRP metric formula is used, which combines bandwidth and delay, how would the engineer calculate the EIGRP metric for this link? Assume the default reference bandwidth is 100 Mbps. What is the resulting EIGRP metric value?

Accepted Answer

128256

Question 14

In a large enterprise network, a network engineer is tasked with optimizing the routing protocol used across multiple branch offices. The current setup employs OSPF (Open Shortest Path First) for intra-domain routing. The engineer is considering the implementation of BGP (Border Gateway Protocol) for inter-domain routing to improve scalability and control over routing decisions. Given the requirements for load balancing and redundancy, which of the following configurations would best enhance the routing efficiency while maintaining optimal path selection and convergence time?

Accepted Answer

Implement BGP with route reflectors and configure OSPF for internal routing within each branch office.

Question 15

In a corporate environment, a network engineer is tasked with designing a network topology that maximizes redundancy and minimizes the risk of a single point of failure. The company has multiple departments that require high availability and efficient communication. Given the need for robust inter-departmental connectivity, which topology would best suit this scenario, considering both performance and fault tolerance?

Accepted Answer

A hybrid topology that combines elements of both star and mesh topologies

Question 16

In a corporate environment, a network administrator is tasked with upgrading the wireless security protocol to enhance the security of sensitive data transmitted over the network. The administrator is considering the implementation of WPA3, which introduces several improvements over its predecessors. Which of the following features of WPA3 specifically addresses the vulnerabilities associated with offline dictionary attacks, which were a significant concern in WPA2?

Accepted Answer

Simultaneous Authentication of Equals (SAE)

Question 17

In a smart city environment, various emerging technologies are integrated to enhance urban living. One of the key technologies is the Internet of Things (IoT), which connects devices and systems to collect and analyze data for improved decision-making. A city planner is evaluating the impact of deploying IoT sensors across the city to monitor traffic patterns, energy usage, and environmental conditions. If the city deploys 500 IoT sensors, each generating data at a rate of 2 MB per hour, how much total data will be generated by all sensors in a week?

Accepted Answer

168,000 MB

Question 18

A network administrator is troubleshooting a wireless network that is experiencing intermittent connectivity issues. The network consists of multiple access points (APs) configured in a mesh topology. During the investigation, the administrator notices that the signal strength varies significantly across different areas of the coverage zone, with some areas showing a signal-to-noise ratio (SNR) of 15 dB while others report an SNR of 30 dB. The administrator also observes that the APs are operating on overlapping channels. What is the most effective approach to resolve the connectivity issues while ensuring optimal performance across the network?

Accepted Answer

Adjust the channel assignments of the APs to minimize overlap and increase the SNR in weaker areas.

Question 19

In a large enterprise network, a network engineer is tasked with optimizing the routing protocol used across multiple branch offices. The current setup employs OSPF (Open Shortest Path First) as the routing protocol. The engineer needs to ensure that the network can efficiently handle dynamic changes, such as link failures and varying traffic loads. Given the requirements for fast convergence and minimal routing overhead, which routing protocol would be the most suitable alternative to OSPF for this scenario, considering both scalability and performance?

Accepted Answer

EIGRP (Enhanced Interior Gateway Routing Protocol)

Question 20

In a corporate network, an Intrusion Detection System (IDS) is deployed to monitor traffic and detect potential threats. The network administrator notices that the IDS is generating a high number of false positives, leading to unnecessary alerts and wasted resources. To address this issue, the administrator decides to implement a more refined detection strategy. Which approach would most effectively reduce false positives while maintaining the system\'s ability to detect genuine threats?

Accepted Answer

Implementing a combination of signature-based and anomaly-based detection methods to enhance detection accuracy.

Question 21

In a corporate network, a network engineer is tasked with implementing Quality of Service (QoS) to prioritize voice traffic 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, which corresponds to Expedited Forwarding (EF), and the data traffic is assigned a DSCP value of 0, which corresponds to Best Effort, how would the network\'s performance be affected if the engineer fails to configure the appropriate queuing mechanisms on the routers?

Accepted Answer

Voice traffic may experience increased latency and jitter, negatively impacting call quality.

Question 22

In a corporate environment, a company is looking to enhance its information security management system (ISMS) in compliance with international standards. The management team is considering various frameworks and guidelines to implement. They are particularly interested in understanding how the ISO/IEC 27001 standard aligns with the NIST Cybersecurity Framework (CSF) in terms of risk management and continuous improvement. Which of the following statements best describes the relationship between these two standards in the context of establishing an effective ISMS?

Accepted Answer

ISO/IEC 27001 provides a systematic approach to managing sensitive company information, while the NIST CSF offers a flexible framework that can be tailored to specific organizational needs, allowing for continuous improvement in risk management practices.

Question 23

In a corporate environment, a network administrator is tasked with upgrading the wireless security protocol to enhance the security of sensitive data transmitted over the network. The current setup uses WPA2, but the administrator is considering transitioning to WPA3. Which of the following advantages of WPA3 should the administrator prioritize when making this decision?

Accepted Answer

WPA3 provides improved protection against brute-force attacks through the use of Simultaneous Authentication of Equals (SAE).

Question 24

In a corporate network, a network engineer is tasked with implementing Quality of Service (QoS) to prioritize voice traffic 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, which corresponds to Expedited Forwarding (EF), and the data traffic is assigned a DSCP value of 0, which corresponds to Best Effort, how will the network devices handle these packets in terms of queuing and scheduling? Additionally, if the network experiences congestion, what is the expected behavior of the network concerning these two types of traffic?

Accepted Answer

Voice packets will be placed in a high-priority queue and transmitted first, while data packets will be queued for later transmission, potentially experiencing delays during congestion.

Question 25

In a corporate network, a company has implemented a dual-homed router configuration to ensure redundancy and failover capabilities. The primary router is connected to the internet and the secondary router is configured to take over in case the primary fails. If the primary router experiences a failure, the failover time is critical for maintaining service availability. Given that the primary router has a failover detection time of 200 milliseconds and the secondary router takes 100 milliseconds to initiate its routing protocols, what is the total time taken for the secondary router to become fully operational after the primary router fails?

Accepted Answer

300 milliseconds

Question 26

In a large enterprise network design, a network engineer is tasked with ensuring optimal performance and redundancy. The design must accommodate a growing number of users and devices while maintaining high availability. The engineer decides to implement a hierarchical network design model. Which of the following best describes the advantages of using a hierarchical model in this scenario?

Accepted Answer

It allows for better scalability, easier troubleshooting, and improved performance through the separation of network layers.

Question 27

In a corporate environment, the IT security team is tasked with developing a comprehensive security policy that addresses both physical and digital security measures. The policy must ensure compliance with industry regulations such as GDPR and HIPAA, while also incorporating best practices for incident response and employee training. Which of the following elements should be prioritized in the security policy to effectively mitigate risks associated with data breaches and unauthorized access?

Accepted Answer

Regular employee training sessions on security awareness and incident reporting procedures

Question 28

In a VoIP network, a company is experiencing issues with call quality due to latency and jitter. The network engineer measures the round-trip time (RTT) for packets sent from the VoIP phone to the server and back, which averages 150 ms. Additionally, the engineer observes that the jitter, defined as the variation in packet arrival times, averages 30 ms. If the acceptable latency for VoIP calls is typically under 200 ms and jitter should ideally be less than 20 ms, what is the impact of the current latency and jitter on the VoIP call quality?

Accepted Answer

The call quality is likely to be poor due to excessive jitter.

Question 29

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 marked with a DSCP value of 46 and the data traffic is marked with a DSCP value of 0, what is the expected outcome in terms of bandwidth allocation and latency for these two types of traffic when both are transmitted simultaneously over a congested link?

Accepted Answer

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

Question 30

In a corporate network, a network engineer is tasked with analyzing traffic patterns using NetFlow data. The engineer observes that the total number of flows recorded over a 24-hour period is 1,200,000. Each flow has an average duration of 30 seconds. If the engineer wants to calculate the average number of flows per second and the total bandwidth utilization if each flow consumes an average of 500 Kbps, what would be the total bandwidth utilization in Mbps?

Accepted Answer

1000 Mbps

CISCO 500-452 Enterprise Networks Core and WAN Exam Free Practice Test — 30 Questions

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