Host command: What is it?

Host command is a versatile utility that plays a crucial role in network diagnostics and domain resolution. Let’s delve into what exactly it is, how it functions, and its practical applications. So, let’s begin!

What is the Host Command?

The host command is a command-line utility used in Unix-like operating systems, including Linux and macOS. It serves the primary purpose of performing DNS (Domain Name System) lookups. DNS is the system responsible for translating human-readable domain names into IP addresses, enabling computers to locate and communicate with each other on the internet.

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What do you need to know about TTL?

TTL: Definition

Time-to-live (TTL) is the value that specifies the time period or number of hops that a data packet must travel to be alive. Either across the network or in the memory cache. It will be terminated when this timer expires, or the data packet reaches its hop limit. Data packets are not all the same; they vary in size and shape, but each has a different TTL. The amount of time data packets should live in a device to perform their missions should be determined.

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