Questions about System moniter

As you can see in this image that there are 4 CPUs while I have a dual-core CPU, is it normal?
Also is swap ok with 0 bytes used?
image

this is showing you your CPU Cores. You probably have a dual core CPU with Hyper Threading.

As for Swap, it's ok that it is not used.

from https://opensource.com/article/18/9/swap-space-linux-systems:
"The primary function of swap space is to substitute disk space for RAM memory when real RAM fills up and more space is needed."

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