Dns Command
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How do DNS resolution times influence network optimization ?
The speed at which DNS resolution occurs can have a significant impact on network performance and optimization. Slow DNS resolution times can cause delays in the start of network communications, while fast DNS resolution times can significantly improve network performance. Strategies for optimizing DNS resolution times include using a reliable DNS server, implementing caching, and using a CDN.
Schematic steps of setting method of wireless network DNS
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Can you explain the working of HTTP and HTTPS protocols ?
HTTP and HTTPS are two important protocols for data transmission on the internet. The main difference between them is that HTTPS encrypts the transmitted data to protect it from interception and tampering, while HTTP does not. HTTP operates by default on TCP port 80 and transmits data in plaintext, while HTTPS uses SSL/TLS for data encryption and operates by default on TCP port 443. The working steps of HTTP include address parsing, DNS resolution, HTTP request packaging, establishing a TCP connection, sending a request command, server response, and closing the connection. On the other hand, the working steps of HTTPS involve an initial handshake, verifying a digital certificate, session key exchange, encrypted data transmission, and connection closure. With increasing concerns about cybersecurity, HTTPS has gradually become the preferred choice for websites requiring secure data transmission.