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How many packets does TCP need to receive to confirm?
When the server sends data to the browser, sometimes the server sends a packet, and the browser will reply with an ACK. Sometimes the...
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What is the difference between gateway, router, and Layer 3 switch? ccna 200-301 training free
The ancient Western prisons would keep all prisoners in a large house. But managers quickly found that there were many disadvantages. As...
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ccna 200-301 lessons Why the application layer need to do data integrity checks?
The CRC32 of the Ethernet is relatively strong, but it can only guarantee that the communication on the same network segment will not be...
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Does the DNS root server store all the domain in the world?
If I apply for a domain name for my personal website, have I taken up the resources of the DNS root server? If not, whose resources do I...
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200-301 exam fee Why can't I access the Internet with a fixed IP?
The network card is set to automatically obtain an IP to access the Internet, but it cannot be accessed by changing to a fixed IP. The...
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Ccna 200-301 vce Linux learning suggestions
1. Attitude suggestions If you are new to Linux, you may find it difficult at first, but you must stick to it and follow the existing...
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