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A client, a server, and the cloud
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A client, a server, and a daemon
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A server
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A client and a server
EXPLANATION
Android Debug Bridge (adb) is a versatile command-line tool that lets you communicate with a
device. The adb command facilitates a variety of device actions, such as installing and debugging
apps, and it provides access to a Unix shell that you can use to run a variety of commands on a
device. It is a client-server program that includes three components:
-
A client, which sends commands. The client runs on your development machine. You can
invoke a client from a command-line terminal by issuing an adb command.
- A daemon (adbd), which runs commands on a device. The daemon runs as a background
process on each device.
- A server, which manages communication between the client and the daemon. The server
runs as a background process on your development machine.
SOURCE
https://developer.android.com/studio/command-line/adb.html
