Linux permission problem with or without points

what is the meaning of linux permissions with or without dots at the end? I went to a lot of websites to learn about this question, and either I didn"t answer the question or I didn"t mention it at all. Please let me know from the instructor. Thank you, for example: lrwxrwxrwx.
[root@centos7 /]-sharp ll
Total dosage 24
drwxr-xr-x 3 root root 19 March 11 19:12 application
lrwxrwxrwx. 1 root root 7 January 4 18:07 bin-> usr/bin
dr-xr-xr-x. 5 root root 4096 March 11 20:09 boot
drwxr-xr-x 2 nfsnobody nfsnobody 24 February 4 16:54 data
drwxr-xr-x 20 root root 3220 April 15 09:02 dev
drwxr-xr-x. 91 root root 8192 April 15 09:04 etc
drwxr-xr-x. 9 root root 99 April 13 14:16 home
lrwxrwxrwx. 1 root root 7 January 4 18:07 lib-> usr/lib
lrwxrwxrwx. 1 root root 9 January 4 18:07 lib64-> usr/lib64
drwxr-xr-x. 2 root root 6 November 5 2016 media
drwxr-xr-x. 3 root root 18 April 12 13:25 mnt
drwxr-xr-x. 2 root root 29 February 10 21:17 opt
dr-xr-xr-x 124 root root 0 April 15 09:01 proc
dr-xr-x-. 4 root root 134 April 13 15:16 root
drwxr-xr-x 26 root root 860 April 15 09:10 run
lrwxrwxrwx. 1 root root 8 January 4 18:07 sbin-> usr/sbin
drwxr-xr-x 2 root root 92 February 23 10:37 scripts
drwxr-xr-x. 2 root root 6 November 5 2016 srv
dr-xr-xr-x 13 root root 0 April 15 09:01 sys
drwxr-xr-x 2 root root 54 April 12 16:01 test
drwxrwxrwt. 16 root root 4096 April 15 09:02 tmp
drwxr-xr-x. 13 root root 155 January 4 18:07 usr
drwxr-xr-x. 21 root root 4096 April 12 22:51 var

Linux

Mar.03,2021

$ ls -alZ dr-xr-xr-x. root root system_u:object_r:root_t:s0 . dr-xr-xr-x. root root system_u:object_r:root_t:s0 .. -rw-r--r-- root root ? .autorelabel lrwxrwxrwx. root root system_u:object_r:bin_t:s0 bin -> usr/bin dr-xr-xr-x. root root system_u:object_r:boot_t:s0 boot drwxr-xr-x root root ? data drwxr-xr-x root root ? dev drwxr-xr-x. root root system_u:object_r:etc_t:s0 etc drwxr-xr-x. root root system_u:object_r:home_root_t:s0 home lrwxrwxrwx. root root system_u:object_r:lib_t:s0 lib -> usr/lib lrwxrwxrwx. root root system_u:object_r:lib_t:s0 lib64 -> usr/lib64 drwxr-xr-x. root root system_u:object_r:mnt_t:s0 media drwxr-xr-x. root root system_u:object_r:mnt_t:s0 mnt drwxr-xr-x. root root system_u:object_r:usr_t:s0 opt dr-xr-xr-x root root ? proc -rw-r--r-- root root ? .readahead dr-xr-x---+ root root system_u:object_r:admin_home_t:s0 root drwxr-xr-x root root ? run lrwxrwxrwx. root root system_u:object_r:bin_t:s0 sbin -> usr/sbin drwxr-xr-x. root root system_u:object_r:var_t:s0 srv drwxr-xr-x root root ? ssd dr-xr-xr-x root root ? sys drwxrwxrwt. root root system_u:object_r:tmp_t:s0 tmp drwxr-xr-x. root root system_u:object_r:usr_t:s0 usr drwxr-xr-x. root root system_u:object_r:var_t:s0 var