6-29. 6-30. 6-31. 6-32. 6-33. 6-34. Memory operations in most computers usually include which of the following items? 1. Control circuits 2. Timing circuits 3. Memory cycle 4. All of the above Memory interface circuits include which of the following items? 1. Address register 2. Communication lines 3. Interfacing register 4. Both 2 and 3 above A word is read from memory, then rerouted back through the Z register to be rewritten. This is what type of memory? 1.  Non-destructive  readout 2. Destructive readout 3.  Hardwired 4.  ROM The priority of a memory request is evaluated by which of the following devices? 1. Control circuits 2. Address register 3.  Z  register 4. C P U Memory read/write enables are provided by which of the following devices? 1. Control circuits 2. Timing circuits 3. CPU 4. I/O  control During a complete memory cycle, which of the following actions occurs first? 1. Registers used for read/write operations are cleared 2. Enables are generated to gate memory address into registers used for read/write operations 3. Memory address translation is accomplished 4. Interface logic acknowledges reading data from memory 6-35. To locate a memory address word, the computer uses which of the following items in memory? 1. Timing   circuits 2. Control circuits 3. Interface circuits 4. Memory logic 6-36, 6-37. 6-38. 6-39. 6-40. 38 The conversion from a logical to a physical memory address is a function of which of the following items in memory? 1. Memory logic 2. Timing circuits 3. Control circuits 4. Interface circuits In all computers, for every read operation there will always be a corresponding write operation. 1. True 2.   False Increasing memory speed using interleaving requires which of the following items? 1. Memory modules of 32 bits 2. A minimum of 8 memory modules 3. More complex CPU and memory control circuitry 4. All of the above When odd parity is used for memory fault detection, all words stored in memory will have which of the following bits? 1. A logic 1 parity bit 2. A logic 0 parity bit 3. An even number of set bits stored at each memory location 4. An odd number of set bits stored at each memory  location The memory protection register set is used for which of the following purposes? 1. To restrict read/write operations in portions of memory 2. To protect memory from unplanned power loss 3. To protect against erroneous write instructions 4. To limit access of memory to authorized users