At first phone interview , quite simply questions : UNIX - signals , process creation (fork , exec etc..) , Perl data types , Shell input variables .. easy, Then technical 1:1 interview : a lot of technologies but easy basic questions : NFS, UNIX system basics: ie: signals , file stystem users permissions, threads , redundancy(system availability), firewalls , C,C++(inheritance, polymorphisms , vtable ..),,Java, Perl,CMS ... and so on... basic questions. Unfortunately there was not questions about stack , heap , registers and pointers and pointers to functions.... etc..... :))))