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質問 # 61
There are 30 questions on a final exam. The exam will be given in room 126 at 2:00 p.m., and students have one hour to complete it. What is the data-information-knowledge-wisdom DIKW pyramid component exemplified by the statement, "I have completed 25 questions, so I am almost done"?
正解：D
解説：
In the DIKW hierarchy, knowledge focuses on applying information to understand a situation and guide action. The exam facts such as 30 questions, room 126, 2:00 p.m., and one hour are information because they provide organized context. The statement, "I have completed 25 questions, so I am almost done," shows interpretation and application: it uses progress data, compares it to the total number of questions, and draws a practical conclusion about task completion. This is more than raw data, because the numbers are being used to reason about status. It is also not wisdom, because it does not involve an ethical or best-action judgment beyond the immediate conclusion. It represents knowledge because the student is applying understanding of the goal and current progress to evaluate where they stand and to manage time and effort. In Information Technology contexts, this is similar to using metrics to determine completion percentage in a project or workload tracking system. Therefore, the correct DIKW component here is knowledge.
質問 # 62
What is a priority of business continuity?
正解：C
解説：
A priority of business continuity is maintaining critical system replicas so essential services can continue or be restored quickly after a disruption. In Information Technology and business continuity planning, organizations identify mission-critical systems and ensure there are standby resources such as replicated servers, replicated databases, or mirrored environments that can take over if the primary systems fail. Replicas support rapid recovery and reduced downtime by enabling failover and restoration without rebuilding from scratch. While on-site redundancy can help with minor failures, business continuity typically emphasizes resilience beyond a single location, since a site-wide incident can disable all on-site resources. Extensive black-box testing relates more to software testing methods than continuity priorities, and rapid system development is a software engineering concern, not the central focus of continuity. Critical system replicas may exist as hot, warm, or cold arrangements depending on recovery time objectives, but the underlying priority is ensuring a working copy of vital systems exists for continuity. Therefore, the correct answer is critical system replicas.
質問 # 63
What is a function of a proxy server?
正解：A
解説：
A proxy server serves several essential functions in network communication:
1.Security and Privacy:
oA proxy server acts as a gateway between the user's device and the internet. When a user sends a request (e.g., accessing a website), it first goes through the proxy server.
oThe proxy server hides the user's IP address, making it difficult for external entities to directly trace the user's location or identity.
oBy acting as an intermediary, the proxy server provides an additional layer of security, protecting the internal network from potential threats and attacks.
2.Content Filtering and Access Control:
oOrganizations often use proxy servers to control internet access for their employees. The proxy can filter requests based on predefined rules.
oFor example, an organization might block access to certain websites (e.g., social media, gambling sites) or restrict access during work hours.
oContent filtering helps maintain productivity and prevent unauthorized access to inappropriate or harmful content.
3.Caching and Acceleration:
oProxy servers can cache frequently accessed web pages, images, and files. When a user requests the same content again, the proxy serves it from its cache.
oCaching reduces the load on the internet connection and speeds up access to commonly visited sites.
oIt also helps save bandwidth by minimizing redundant data transfers.
4.Load Balancing:
oIn large networks, multiple proxy servers can distribute incoming requests to different web servers. This load balancing ensures efficient utilization of resources.
oBy evenly distributing traffic, proxy servers prevent any single server from becoming overwhelmed.
5.Anonymity and Geolocation Bypass:
oSome users use proxy servers to hide their real IP addresses. This anonymity can be useful for privacy reasons or to bypass geolocation restrictions.
oFor example, a user in one country can use a proxy server located in another country to access region-restricted content.
References
1.SoftwareLab: What is a Proxy Server? Types & Examples You Need to Know
2.Kinsta: What Is a Proxy Server Used For? (And How Does It Work?)
3.Fortinet: What is a Proxy Server? Definition, Uses & More
4.KnowledgeHut: What is Proxy Server? Types, Functions & Use Cases
5.Varonis: What is a Proxy Server and How Does it Work?
質問 # 64
In which generafion of computers were vacuam tubes used as one of the hardware components?
正解：A
解説：
*Verified Answer: Vacuum tubes were used as one of the hardware components in the first generation of computers.
*Explanation: The first-generation computers, developed between 1946 and 1959, relied on vacuum tubes for their circuitry. These vacuum tube computers paved the way for electronic computing.
質問 # 65
Which category of software allows other types of software to interface with the computer hardware?
正解：D
解説：
System software is the category that allows other software to interface with computer hardware. In Information Technology, system software includes the operating system, device drivers, and utility programs that manage hardware resources and provide a platform for applications. Applications such as word processors and web browsers do not communicate directly with hardware like the CPU, memory, storage devices, or printers. Instead, they use services provided by the operating system and drivers. The operating system manages processes, memory, and input and output operations, while device drivers translate general commands into device-specific instructions for hardware components. This layered design improves reliability and security by controlling access to hardware and standardizing how applications request resources. Productivity software refers to applications that help users perform tasks, and collaboration software supports communication and teamwork, but neither category provides the core hardware interface.
Shareware is a distribution and licensing model, not a hardware interface layer. Therefore, the correct category is system software.
質問 # 66
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