Hello can u help me with this questions please ? i have last 20 min

Separate allocation queues for fixed memory blocks of equal size cause: Select one or more: a. need for compaction b. internal fragmentation c. external fragmentation Q2 Dynamic relocation is performed by: a. Paging system b. Special registers (DATUM) c. Compiler d. Segment descriptors Q3 On UNIX, the number of files is directly limited by: Select one or more: a. The number of bits of the field describing the size of the file b. Allocation unit size c. The size of the space allocated for files d. The number of bits of the disk address e. I-node table size Q4 The internal state of the program supervisor layer is available for: a. Applications b. User programs c. OS kernel d. File system layer