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NEW QUESTION # 597
Which of the following can beimplementedtoadd an additional layer of securitybetween acorporate networkandnetwork management interfaces?
Answer: B
Explanation:
Comprehensive and Detailed Explanation:
Ajump boxis ahardened, isolated systemthat providessecure accesstocritical infrastructure deviceslike routers and firewalls.
NEW QUESTION # 598
Which of the following layers of the OSI model is responsible for end-to-end encryption?
Answer: B
Explanation:
The correct answer is Presentation, which is Layer 6 of the OSI model. According to the CompTIA Network+ N10-009 objectives, the Presentation layer is responsible for data formatting, compression, and encryption, ensuring that data sent from the application layer of one system can be properly interpreted by the receiving system.
End-to-end encryption refers to encrypting data before transmission and decrypting it only at the final destination, preventing intermediaries from accessing the plaintext data. In the OSI model, this encryption and decryption function is logically placed at the Presentation layer, which sits between the Application and Session layers. This layer transforms data into a standardized format and applies security mechanisms such as encryption algorithms.
While modern implementations like TLS/SSL often operate across multiple layers in real-world networking stacks, the Network+ exam adheres to the conceptual OSI model when testing knowledge. From an OSI perspective, encryption is explicitly associated with the Presentation layer.
The Application layer provides network services to end-user applications, the Session layer manages session establishment and teardown, and the Transport layer focuses on segmentation, flow control, and reliability.
None of these layers are primarily responsible for encryption within the OSI framework.
CompTIA emphasizes understanding these conceptual responsibilities, making Presentation the correct and expected answer.
NEW QUESTION # 599
A network engineer wants to implement a new IDS between the switch and a router connected to the LAN. The engineer does not want to introduce any latency by placing the IDS in line with the gateway. The engineer does want to ensure that the IDS sees all packets without any loss. Which of the following is the best way for the engineer to implement the IDS?
Answer: C
Explanation:
To ensure that an IDS sees all packets without any loss and without introducing latency, the best approach is to use a port mirror, also known as a SPAN (Switched Port Analyzer) port. Port mirroring copies network packets seen on one switch port (or an entire VLAN) to another port where the IDS is connected. This method allows the IDS to monitor traffic passively without being in the direct path of network traffic, thus avoiding any additional latency.
NEW QUESTION # 600
Which of the following is a cost-effective advantage of a split-tunnel VPN?
Answer: D
Explanation:
A split-tunnel VPN allows certain traffic (e.g., cloud-based services) to bypass the VPN and go directly to the Internet. This reduces the amount of traffic that needs to traverse the company's VPN and Internet connection, conserving bandwidth and reducing costs. It also means that not all traffic is subject to the same level of inspection or filtering, which can improve performance for cloud-based services.Reference: CompTIA Network+ study materials.
NEW QUESTION # 601
A user is unable to navigate to a website because the provided URL is not resolving to the correct IP address. Other users are able to navigate to the intended website without issue. Which of the following is most likely causing this issue?
Answer: B
Explanation:
Role of the Hosts File:
The hosts file is a local file on a computer that maps hostnames to IP addresses. It can be used to override DNS resolution by providing a static mapping of a hostname to an IP address.
Common Issues with the Hosts File:
If an incorrect IP address is mapped to a hostname in the hosts file, it can cause the computer to resolve the hostname to the wrong IP address. This can lead to navigation issues for specific websites while other users, relying on DNS, do not face the same problem.
NEW QUESTION # 602
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