A junior network administrator gets a text message from a number posing as the domain registrar of the firm. The administrator is tricked into providing global administrator credentials.Which of the following attacks is taking place?
Answer(s): D
Smishing is a type of social engineering attack that uses SMS (text messages) to trick individuals into revealing sensitive information, such as credentials or personal data. In this case, the junior network administrator received a text message posing as the domain registrar and was tricked into providing global administrator credentials. This is a classic example of smishing, where the attacker uses SMS to exploit the victim's trust.
A network engineer wants to implement a secure solution that provides authentication and encryption to gather and monitor logs within the company network.Which of the following tools will accomplish this task?
Answer(s): C
SNMPv3 (Simple Network Management Protocol version 3) provides both authentication and encryption for monitoring and gathering logs from devices in a network. Unlike earlier versions (SNMPv1 and SNMPv2), SNMPv3 includes security features that ensure data privacy through encryption and secure authentication, making it the best choice for securely gathering and monitoring logs.
A tourist attempts to access an online banking site on a mobile device while in a public place.Which of the following is the tourist most likely to experience?
Shoulder surfing occurs when someone attempts to gain unauthorized access to sensitive information by observing the actions of someone else in a public place. In this scenario, the tourist is accessing an online banking site on a mobile device in a public place, and an attacker could potentially watch over their shoulder to see their login credentials or sensitive account information. This type of attack relies on physical observation, often in crowded or public areas.
Which of the following is used to separate a corporate network into multiple logical networks?
Answer(s): B
A VLAN (Virtual Local Area Network) is used to separate a corporate network into multiple logical networks.VLANs allow network administrators to segment the network into different virtual groups, even if they are on the same physical hardware. This improves network management, security, and performance by isolating traffic between different segments of the network.
A medical clinic recently configured a guest wireless network on the existing router. Since then, guests have been changing the music on the speaker system.Which of the following actions should the clinic take to prevent unauthorized access? (Choose two.)
Answer(s): A,E
Isolate smart devices to their own network segment: By isolating the smart devices (like the speaker system) on a separate network segment or VLAN, you can prevent guests from accessing those devices. This segmentation ensures that guests on the guest network cannot communicate with critical devices on the main network.Change the default credentials: Many smart devices come with default usernames and passwords that are widely known. Changing these default credentials will help prevent unauthorized access to the devices from the guest network or any other network.
A network administrator needs to disable all inbound and outbound telnet traffic in the network.Which of the following ports should the administrator disable?
Answer(s): A
Telnet uses port 23 for communication. To disable all inbound and outbound telnet traffic, the network administrator should block or disable traffic on port 23. This will prevent any telnet connections from being established within the network.
Which of the following stages of the troubleshooting methodology involves considering multiple approaches?
During the "Establish a theory of probable cause" stage of the troubleshooting methodology, the technician considers multiple possible causes of the issue. The goal is to brainstorm and analyze all potential explanations for the problem based on the symptoms and available information. This step involves forming hypotheses about what might be causing the issue, which will later be tested through further analysis or experiments.
After a recent merger, a large number of alerts are coming in regarding extremely high utilization.Which of the following should be generated to help inform new alerting requirements?
A baseline is a collection of performance metrics gathered over time that represents the normal operation of a system or network. By establishing a baseline, the network administrator can better understand what "normal" traffic and utilization levels are, which helps in setting appropriate thresholds for alerts. After a merger, it's essential to understand the new normal for the combined environment, which will inform the adjustment of alerting thresholds and requirements. This will prevent unnecessary alerts and ensure that critical issues are highlighted effectively.
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