To check malware, use
https://www.malwarebytes.com/mwb-download/
https://winaero.com/how-to-repair-windows-11-with-sfc-and-dism/

article: https://answers.microsoft.com/en-us/windows/forum/all/windows-11-computer-name-keeps-changing-affecting/4226dbbb-4174-44ee-87f5-ffba2f39aeab

checkout the article on cybersecurty:
https://simulationexams.medium.com/top-5-cybersecurity-certifications-f16f1295ea10
https://www.edocr.com/v/2bpkjwe5/simexams/tutorialswebcomrfmeasurementscoaxialcablemeasurem-
https://issuu.com/tutorialsweb1/docs/tutorialsweb_com_rf_measurements_co_axial_cable_me

https://zzb.bz/ccnasim  https://www.certexams.com/cisco/ccna/netsim-exam-details.htm

https://zzb.bz/laas https://www.certexams.com/eLearning/learning-and-assessment-software.htm
https://zzb.bz/routersim https://routersimulator.certexams.com/router-simulator.html
https://zzb.bz/netsim https://routersimulator.certexams.com/network-simulator-designer.html
https://zzb.bz/juniperlabs https://routersimulator.certexams.com/juniper-sim/index.html
https://zzb.bz/jnciaexam https://routersimulator.certexams.com/juniper-sim/exsim-netsim-details.html

https://zzb.bz/apluslabs  https://routersimulator.certexams.com/aplus-lab-simulator.html
https://zzb.bz/aplus  https://www.certexams.com/comptia/a+/comptia-aplus-exam-sim-with-labsim.htm
https://zzb.bz/networkpluslabs  https://routersimulator.certexams.com/network-lab-simulator.html
https://zzb.bz/networkplusexam https://www.certexams.com/comptia/net+/comptia-netplus-exam-sim-with-labsim.htm
https://zzb.bz/onlinetest   https://www.certexams.com/eLearning/computer-based-test-software.htm

hostwinds.com rdns pointer record ptr record update: https://clients.hostwinds.com/cloud/rdns_manage.php
setting up dns in cpanel
https://gcore.com/docs/dns/dns-records/set-up-dns-for-sending-email

pdfcrowd converts webpage to pdf, and sejda.com helps us to insert urls into the pdf.

https://pdfcrowd.com/

Free pdf editor (insert URLS in to pdf):
https://www.sejda.com/

Together, they are good. One for converting html to pdf and the latter for inserting urls into the pdf.

https://www.certexams.com/comptia/ITF+/online-exam-details.htm  https://zzb.bz/itfplus
https://www.certexams.com/download/itfplus-download.htm  https://zzb.bz/itfplusexam
https://www.certexams.com/comptia.htm  https://zzb.bz/comptia
https://www.certexams.com/cisco.htm   https://zzb.bz/ciscocerts