Instant Access CompTIA.N10-009.v2026-04-15.q384 Actual Practice Test Engine for Free (Page 48)

Question 231

Which of the following is the most secure way to provide site-to-site connectivity?

A.VXLAN
B.IKE
C.GRE
D.IPsec

Question 232

A network administrator needs to create a way to redirect a network resource that has been on the local network but is now hosted as a SaaS solution. Which of the following records should be used to accomplish the task?

A.TXT
B.AAA
C.PTR
D.CNAME

Question 233

You are tasked with verifying the following requirements are met in order to ensure network security.
Requirements:
Datacenter
Ensure network is subnetted to allow all devices to communicate properly while minimizing address space usage Provide a dedicated server to resolve IP addresses and hostnames correctly and handle port 53 traffic Building A Ensure network is subnetted to allow all devices to communicate properly while minimizing address space usage Provide devices to support 5 additional different office users Add an additional mobile user Replace the Telnet server with a more secure solution Screened subnet Ensure network is subnetted to allow all devices to communicate properly while minimizing address space usage Provide a server to handle external 80/443 traffic Provide a server to handle port 20/21 traffic INSTRUCTIONS Drag and drop objects onto the appropriate locations. Objects can be used multiple times and not all placeholders need to be filled.
Available objects are located in both the Servers and Devices tabs of the Drag & Drop menu.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.

Question 234

A junior network administrator is auditing the company network and notices incrementing input errors on a long-range microwave interface. Which of the following is the most likely reason for the errors?

A.The parabolic signal is misaligned.
B.The omnidirectional signal is being jammed.
C.The omnidirectional signal is not strong enough to receive properly.
D.The parabolic signal uses improper routing protocols.

Question 235

Which of the following is a characteristic of the application layer?

A.It relies upon other layers for packet delivery.
B.It checks independently for packet loss.
C.It encrypts data in transit.
D.It performs address translation.

Correct Answer: A

Introduction to OSI Model:
The OSI model is a conceptual framework used to understand network interactions in seven layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application.
Application Layer:
The application layer (Layer 7) is the topmost layer in the OSI model. It provides network services directly to end-user applications. This layer facilitates communication between software applications and lower layers of the network protocol stack.
Reliance on Other Layers:
The application layer relies on the transport layer (Layer 4) for data transfer across the network. The transport layer ensures reliable data delivery through protocols like TCP and UDP.
The network layer (Layer 3) is responsible for routing packets to their destination.
The data link layer (Layer 2) handles node-to-node data transfer and error detection.
The physical layer (Layer 1) deals with the physical connection between devices.
Explanation of the Options:
A . It relies upon other layers for packet delivery: This is correct. The application layer depends on the lower layers (transport, network, data link, and physical) for the actual delivery of data packets.
B . It checks independently for packet loss: This is incorrect. Packet loss detection is typically handled by the transport layer (e.g., TCP).
C . It encrypts data in transit: This is incorrect. Encryption is typically handled by the presentation layer or at the transport layer (e.g., TLS/SSL).
D . It performs address translation: This is incorrect. Address translation is performed by the network layer (e.g., NAT).
Conclusion:
The application layer's primary role is to interface with the end-user applications and ensure that data is correctly presented to the user. It relies on the underlying layers to manage the actual data transport and delivery processes.
Reference:
CompTIA Network+ guide covering the OSI model and the specific roles and functions of each layer (see page Ref 10 How to Use Cisco Packet Tracer).

Question 231

Question 232

Question 233

Question 234

Question 235

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