Answer Happy

For each question, answer whether it is true or false. If false,explain why in detail.1. In virtual memory systems, pure paging systems haveinternal fragmentation.2. Processes like text editors should be given high priority.3. Using virtual memory cannot cause a process to hang.4. On real memory systems, the "best fit" allocation strategyshould have goodperformance on systems with standardized program sizes.5. The use of I-nodes instead of FAT should not improve theperformance ofSequential access I/O intensive programs.6. Your computer's games are slow, one of the alternatives youshouldconsider is increasing your swap. (F-8)7. FS can handle security and encryption routines.8. The NUR (not used recently) page replacement algorithm,despiteto function properly, it requires that the computer hardwarehave dirty bit and reference bit. (F-9)9. ARMV4 architecture systems can use page sizesdifferent in the page table.10. The only way to hinder “logic bomb” attacks is with theincrease in the system maintenance team.11. One of the easiest ways to get interesting information is toinvestigaterandomly allocated memory blocks and disk sectors.12. The big problem with virtual memory on 32-bit and 64-bitcomputers is thepage table size. In practice the space overhead is so large(1million entries per process we have 32-bit computer andpages4k), which makes it impossible to use a virtual memory spaceforprocess (F-10)13. In a covert channel, the server software maintains an unsecuredport.declared with direct communication to the malicious software. Thisscheme canbe controlled by encapsulating the server process (F-11)communications.14. The DOS directory system with FAT-32 files makes it difficultto use "hardlinks".