Montags and Clarisse's realtionship is weird. If she had not died I think they would have become a lot closer throughout the book. Clarisse seemed to bring out a different side of Montag. They way she would ask him questions and make things for him.
JKS stands for Java KeyStore. It is a repository of certificates (signed public keys) and [private] keys. You can export a certificate stored in a JKS file into a certificate file. You can use the keytool utility found in Java distributions to maintain your JKS trust and key repositories.
Notes about the LNK file extension: The LNK file type is primarily associated with 'Windows' by Microsoft Corporation. A shortcut file is a pointer to an .EXE file somewhere on your system. When you click on the shortcut it's like clicking on the .EXE file and the associated program should start and run. Sometimes .LNK files will stop working. This can be because the underlying .EXE association has been broken by something (often by some form of anti-malware program improperly changing the registry) or the association in the registry can be come corrupted. See the FAQs for the .EXE problem. The other problem generally asserts itself when all shortcuts seem to open the same program. You may be able to fix this by opening the registry editor and looking in the key entry [HKEY_CLASSES_ROOT\.lnk] where you might see @=lnk_auto_file.