Desktop Support 面试题与答案
问题 1. What is the purpose of DNS?
DNS (Domain Name System) is used to translate human-readable domain names into IP addresses.
Example:
When you type 'www.example.com' in a browser, DNS resolves it to the corresponding IP address.
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问题 2. Explain the difference between TCP and UDP.
TCP (Transmission Control Protocol) provides reliable, connection-oriented communication, while UDP (User Datagram Protocol) offers faster, connectionless communication.
Example:
TCP is used for web browsing, while UDP is suitable for real-time applications like video streaming.
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问题 3. What is DHCP and how does it work?
DHCP (Dynamic Host Configuration Protocol) assigns IP addresses dynamically to devices on a network, eliminating the need for manual configuration.
Example:
When a computer connects to a network, DHCP provides it with an IP address, subnet mask, and other configuration details.
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问题 4. How do you troubleshoot a computer that cannot connect to the network?
Check network cables, verify network settings, restart networking devices, and use diagnostic tools like ping and traceroute.
Example:
Verify if the computer has a valid IP address and check for any network outages.
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问题 5. Explain the purpose of the OSI model.
The OSI (Open Systems Interconnection) model is a conceptual framework that standardizes the functions of a communication system into seven layers.
Example:
The OSI model helps in understanding and troubleshooting network-related issues by dividing tasks into manageable layers.
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