IT 3123 Study Guide - Quiz Guide: Packet Switching, Address Resolution Protocol, Connectionless Communication
Document Summary
The difference between tape and magnetic disk is that tape is sequential and disk is direct. Zoned disk has more blocks near the outer circumference than near the inner circumference. Magnetic disk, a cylinder is the amount of data that can be transferred without moving the head. Program control block (pcb), also called the program status word (psw) all registers of the interrupted program are saved here before control is transferred to the interrupt handler. Color depth, is the number of bits used to represent colors in an image. A cylinder, is a collection of tracks consisting of the same track on all platters. Interrupts, are checked at the end of each instruction. They are also used to communicate events that need attention to the cpu. Interrupt program handler, program determines the appropriate course of action. Privileged instructions, are instructions that only the operating system can execute.
