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While troubleshooting connectivity issues, a junior network administrator is given explicit instructions to test the host's TCP/IP stack first. Which of the following commands should the network administrator run?
A. ping 127.0.0.1
B. ping 169.254.1.1
C. ping 172.16.1.1
D. ping 192.168.1.1
Explanation: The loopback address 127.0.0.1 is used to test the TCP/IP stack of the local machine. Pinging this address confirms whether the local system's networking stack is functioning correctly.
Before using a guest network, an administrator requires users to accept the terms of use Which of the following is the best way to accomplish this goal?
A. Pre-shared key
B. Autonomous access point
C. Captive portal
D. WPA2 encryption
Explanation: A captive portal is a web page that users must view and interact with before being granted access to a network. It is commonly used in guest networks to enforce terms of use agreements. When a user connects to the network, they are redirected to this portal where they must accept the terms of use before proceeding. This method ensures that users are aware of and agree to the network's policies, making it the best choice for this scenario. References: CompTIA Network+ Exam Objectives and official study guides.
Which of the following would be violated if an employee accidentally deleted a customer's data?
A. Integrity
B. Confidentiality
C. Vulnerability
D. Availability
Explanation: Explanation: Availability refers to ensuring that data is accessible when needed. If a customer's data is accidentally deleted, it impacts availability, as the data can no longer be accessed.
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
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.
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
Explanation: [Reference: CompTIA Network+ Certification Exam Objectives - Remote Access Methods section., ]
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