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Last Updated: Jun 24, 2026
IT Exam Items Repository › Category: Networking Essentials
A client packet is received by a server. The packet has a destination port number of 53. What service is the client requesting?
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What characteristic describes a virus?
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A client packet is received by a server. The packet has a destination port number of 110. What service is the client requesting?
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What is the term used when a malicious party sends a fraudulent email disguised as being from a legitimate, trusted source?
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Which two application layer protocols manage the exchange of messages between a client with a web browser and a remote web server? (Choose two.)
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Which two commands could be used to check if DNS name resolution is working properly on a Windows PC? (Choose two.)
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What is the purpose of a DMZ?
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Which statement accurately characterizes the evolution of threats to network security?
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A secretary receives a phone call from someone claiming that their manager is about to give an important presentation but the presentation files are corrupted. The caller sternly asks that the secretary email the presentation right away to a personal email address. The caller also states that the secretary is being held personally responsible for the success of this presentation. What type of social engineering tactic is the caller using?
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Which utility uses the Internet Control Messaging Protocol (ICMP)?
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What is the primary means for mitigating virus and Trojan horse attacks?
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What is the well-known port address number used by DNS to serve requests?
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What non-technical method could a cybercriminal use to gather sensitive information from an organization?
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What type of attack occurs when data goes beyond the memory areas allocated to an application?
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Employees in an organization report that they cannot access the customer database on the main server. Further investigation reveals that the database file is now encrypted. Shortly afterward, the organization receives a threatening email demanding payment for the decryption of the database file. What type of attack has the organization experienced?
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