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四种练习方式。

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章,免费在线阅读

五章,免费在线

每章免费在线

1Technical Support Fundamentals and Computer HardwareHardware · 占考试 18%免费阅读 →
2Operating Systems and System AdministrationOperating Systems · 22% —— 最大的部分免费阅读 →
3Networking Fundamentals: TCP/IP, DNS, and DHCPNetworking · 20%免费阅读 →
4IT Security: Encryption, AAA, and Network HardeningIT Security · 20%免费阅读 →
5Troubleshooting and Customer Service MethodologyTroubleshooting · 20%免费阅读 →

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Operating Systems

What is the primary role of an operating system?

ATo manage hardware resources and provide services for applications正确
BTo physically cool the hardware components
CTo manufacture computer chips
DTo provide internet connectivity by itself

为什么: An operating system manages a computer's hardware and software resources, including the CPU, memory, storage, and devices. It provides a platform and services on which applications run. Examples include Windows, macOS, Linux, Android, and iOS.

Networking

What does the acronym 'IP' stand for in networking?

AIntegrated Packet
BInterface Port
CInternal Protocol
DInternet Protocol正确

为什么: IP stands for Internet Protocol, which is responsible for addressing and routing packets of data so they can travel across networks. Every device on an IP network has an IP address. IP works together with TCP in the widely used TCP/IP suite.

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