Worried About Swap - MISSING?

[EGO-II.1]

I have been using Fedora 25 happily now since it's release, but when I 
happened to run /etc/fstab while trying to "find" a USB stick I noticed 
this output:

  Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
/dev/mapper/fedora-root /                       ext4 defaults        1 1
UUID=a305554f-e0cf-47dc-8f9b-b8799276038d /boot ext4    defaults        1 2
/dev/mapper/fedora-home /home                   ext4 defaults        1 2
/dev/mapper/fedora-swap swap                    swap defaults        0 0
/etc/fstab (END)

My question is: Should I be worried that it's NOT showing a SWAP 
partition? And could thi be why this laptop which has sufficient RAM is 
kind of slow? And finally how would I go about adding a swap partition 
from the command line (as opposed to a GUI...trying to learn how to do 
more in the magical "Little Black Box"!) Any help offered would be 
greatly appreciated.


Thanks In Advance

EGO II