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Networking

Communication between computing devices

Networking is the process of connecting and allowing communication between two or more computing devices. It covers topics such as network architecture, topology, protocols, and troubleshooting.
5 minutes 5 Questions

Concepts covered: TCP/IP Model, Network Security, Network Troubleshooting, Network Cabling, IP Addressing, Ethernet, Wireless Networking, Quality of Service (QoS), Subnetting, Virtual Local Area Networks (VLANs), OSI Model, Network Topologies, Switching and Routing, Network Protocols

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CompTIA A+ - Networking Example Questions

Test your knowledge of Amazon Simple Storage Service (S3)

Question 1

A company's network is becoming overloaded with file transfer traffic during peak business hours, resulting in a significant impact on other services. What QoS tool can aid in improving the network performance for non-file transfer traffic?

Correct Answer: Implement Weighted Fair Queuing (WFQ)

Weighted Fair Queuing (WFQ) is the most suitable QoS tool to improve network performance for non-file transfer traffic in this scenario. WFQ allows the network to prioritize and allocate bandwidth based on traffic type and importance. By assigning higher priority to critical services and applications, WFQ ensures that they receive sufficient bandwidth even during peak file transfer periods. This prevents file transfers from monopolizing the network resources and impacting the performance of other services. Upgrading the network infrastructure may help but does not specifically address the issue of prioritizing traffic. Applying strong security measures for file transfers is important but does not directly solve the performance problem. Blocking all file transfers using the firewall would be too drastic and hinder necessary file sharing within the company.

Question 2

A network administrator received an email from an unknown sender containing a suspicious attachment. What should the administrator do to prevent a potential security threat?

Correct Answer: Do not open the attachment and report it to the security team.

The best course of action is to not open the attachment and report it to the security team. Opening an unknown attachment from an unknown sender can potentially introduce malware or other security threats to the network. Saving the attachment to a USB drive and opening it on a personal computer or emailing it to a coworker can also spread the potential threat. The safest approach is to avoid interacting with the suspicious email and its attachment, and to inform the appropriate security personnel who can investigate it further.

Question 3

Two computers in the same network are unable to communicate due to an incorrect subnet mask configuration. What can the technician do to solve this issue?

Correct Answer: Ensure that both computers have the correct subnet mask

The correct answer is to ensure that both computers have the correct subnet mask. A subnet mask is used to determine which part of an IP address represents the network and which part represents the host. If two computers on the same network have mismatched subnet masks, they will be unable to communicate properly. The subnet mask must be correctly configured on both computers for successful network communication. Replacing network cables or changing IP addresses will not resolve the issue if the underlying problem is an incorrect subnet mask. Configuring the computers to use different DNS servers is unrelated to the subnet mask configuration issue.

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