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.
Publisher's Description. From Discordia: jZip is a new compression utility for Windows. jZip supports multiple popular archive formats such as ZIP, RAR, 7z, ISO, TAR and GZip. It is fully compatible with archives created by other utilities such as WinZip, WinRar and 7-Zip.