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N10-009 Practice Questions

Question # 1
A network administrator is implementing security zones for each department. Which of the following should the administrator use to accomplish this task?
A. ACLs
B. Port security
C. Content filtering
D. NAC


A. ACLs

Explanation:
Understanding ACLs:
Access Control Lists (ACLs): A set of rules used to control network traffic and restrict access to network resources by filtering packets based on IP addresses, protocols, or ports.

Implementing Security Zones:

Defining Zones: ACLs can be used to create security zones by applying specific rules to different departments, ensuring that only authorized traffic is allowed between these zones.
Control Traffic: ACLs control inbound and outbound traffic at network boundaries, enforcing security policies and preventing unauthorized access.

Comparison with Other Options:

Port Security: Limits the number of devices that can connect to a switch port, preventing MAC address flooding attacks, but not used for defining security zones.
Content Filtering: Blocks or allows access to specific content based on predefined policies, typically used for web filtering rather than network segmentation.
NAC (Network Access Control): Controls access to the network based on the security posture of devices but does not define security zones.

Implementation Steps:

Define ACL rules based on the requirements of each department.
Apply these rules to the appropriate network interfaces or firewall policies to segment the network into security zones.

References:
CompTIA Network+ study materials on network security and access control methods.


Question # 2
A network administrator is deploying a new switch and wants to make sure that the default priority value was set for a spanning tree. Which of the following values would the network administrator expect to see?
A. 4096
B. 8192
C. 32768
D. 36684


C. 32768

Explanation:
Understanding Spanning Tree Protocol (STP):

STP is used to prevent network loops in Ethernet networks by creating a spanning tree that selectively blocks some redundant paths.

Default Priority Value:

Bridge Priority: STP uses bridge priority to determine which switch becomes the root bridge. The default bridge priority value for most switches is 32768.
Priority Range: The bridge priority can be set in increments of 4096, ranging from 0 to 61440.

Configuration and Verification:

When deploying a new switch, the network administrator can verify the bridge priority using commands such as show spanning-tree to ensure it is set to the default value of 32768.

Comparison with Other Values:

4096 and 8192: Lower than the default priority, indicating these would be manually configured for higher preference.
36684: A non-standard value, likely a result of specific configuration changes.

References:
CompTIA Network+ study materials on Spanning Tree Protocol and network configuration.


Question # 3
Which of the following describes the best reason for using BGP?
A. Preventing a loop within a LAN
B. Improving reconvergence times
C. Exchanging router updates with a different ISP
D. Sharing routes with a Layer 3 switch


C. Exchanging router updates with a different ISP

Explanation: BGP (Border Gateway Protocol) is used for routing data between different ISPs, making it essential for the functioning of the internet. Its primary use is for exchanging routing information between autonomous systems, especially different ISPs. Preventing loops within a LAN is handled by protocols like Spanning Tree Protocol (STP), while improving reconvergence times and sharing routes with a Layer 3 switch are functions of other protocols or internal mechanisms.
[Reference:, The CompTIA Network+ training emphasizes BGP’s role in the exchange of routing information across different ISPs and autonomous systems., , ]


Question # 4
A virtual machine has the following configuration:

•IPv4 address: 169.254.10.10
•Subnet mask: 255.255.0.0

The virtual machine can reach colocated systems but cannot reach external addresses on the Internet. Which of the following Is most likely the root cause?
A. Thesubnet mask is incorrect.
B. TheDHCP server is offline.
C. TheIP address is an RFC1918 private address.
D. TheDNS server is unreachable.


B. TheDHCP server is offline.



Question # 5
Which of the following should a network administrator configure when adding OT devices to an organization’s architecture?
A. Honeynet
B. Data-at-rest encryption
C. Time-based authentication
D. Network segmentation


D. Network segmentation

Explanation:

Network segmentation involves dividing a network into smaller segments or subnets. This is particularly important when integrating OT (Operational Technology) devices to ensure that these devices are isolated from other parts of the network. Segmentation helps protect the OT devices from potential threats and minimizes the impact of any security incidents. It also helps manage traffic and improves overall network performance.References: CompTIA Network+ study materials.


Question # 6
A network administrator is connecting two Layer 2 switches in a network. These switches must transfer data in multiple networks. Which of the following would fulfill this requirement?
A. Jumbo frames
B. 802.1Q tagging
C. Native VLAN
D. Link aggregation


B. 802.1Q tagging

Explanation: 802.1Q tagging, also known as VLAN tagging, is used to identify VLANs on a trunk link between switches. This allows the switches to transfer data for multiple VLANs (or networks) over a single physical connection. This method ensures that traffic from different VLANs is properly separated and managed across the network.References: CompTIA Network+ study materials.


Question # 7
A user connects to a corporate VPN via a web browser and is able to use TLS to access the internal financial system to input a time card. Which of the following best describes how the VPN is being used?
A. Clientless
B. Client-to-site
C. Full tunnel
D. Site-to-site


A. Clientless

Explanation:

[Reference: CompTIA Network+ Certification Exam Objectives - Remote Access Methods section., ]


Question # 8
A network administrator's device is experiencing severe Wi-Fi interference within the corporate headquarters causing the device to constantly drop off the network. Which of the following is most likely the cause of the issue?
A. Too much wireless reflection
B. Too much wireless absorption
C. Too many wireless repeaters
D. Too many client connections


A. Too much wireless reflection

Reference: CompTIA Network+ Certification Exam Objectives - Wireless Networks section.


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CompTIA N10-009 Exam Dumps

Exam Name: CompTIA Network+ Certification Exam
Certification Name: CompTIA Network+

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