One distinguishing characteristic of memory

One distinguishing characteristic of memory


T or F: The basic element of a semiconductor memory is the memory cell.

 

·         TRUE

 

T or F: A characteristic of ROM is that it is volatile.

 

·         FALSE

 

T or F: RAM must be provided with a constant power supply.

 

·         TRUE

 

T or F: The two traditional forms of RAM used in computers are DRAM and SRAM.

 

·         TRUE

 

T or F: A static RAM will hold its data as long as power is supplied to it.

 

·         TRUE

 

T or F: Nonvolatile means that power must be continuously supplied to the memory to preserve the bit values.

 

·         FALSE

 

T or F: Nonvolatile means that power must be continuously supplied to the memory to preserve the bit values.

 

·         FALSE

 

T or F: Semiconductor memory comes in packaged chips.

 

·         TRUE

 

T or F: All DRAMs require a refresh operation.

 

·         TRUE

 

T or F: 10. A number of chips can be grouped together to form a memory bank.

 

·         TRUE

 

T or F: An error-correcting code enhances the reliability of the memory at the cost of added complexity.

 

·         TRUE

 

T or F: DRAM is much costlier than SRAM.

 

·         FALSE

 

 

T or F: RDRAM is limited by the fact that it can only send data to the processor once per bus clock cycle.

 

·         FALSE

 

T or F: The prefetch buffer is a memory cache located on the RAM chip.

 

·         TRUE

 

T or F: The SRAM on the CDRAM cannot be used as a buffer to support the serial access of a block of data.

 

·         FALSE

 

1.    Which properties do all semiconductor memory cells share?
A. they exhibit two stable states which can be used to represent binary 1 and 0
B. they are capable of being written into to set the state
C. they are capable of being read to sense the state
D. all of the above

 

·         D. all of the above

 

2.    One distinguishing characteristic of memory that is designated as _________ is that it is possible to both to read data from the memory and to write new data into the memory easily and rapidly.
A. RAM
B. ROM
C. EPROM D. EEPROM

 

·         RAM

 

3.    Which of the following memory types are nonvolatile?
A. erasable PROM B. programmable ROM
C. flash memory D. all of the above

 

·         D. all of the above

 

 

4.    In a _________, binary values are stored using traditional flip-flop logic-gate configurations.
A. ROM
B. SRAM
C. DRAM D. RAM

 

 

·         B. SRAM

 

5.    A __________ contains a permanent pattern of data that cannot be changed, is nonvolatile, and cannot have new data written into it.
A. RAM
B. SRAM
C. ROM
D. flash memory

 

 

·         C. ROM

 

6.    With _________ the microchip is organized so that a section of memory cells are erased in a single action.
A. flash memory B. SDRAM
C. DRAM D. EEPROM

 

 

·         flash memory

 

7.    __________ can be caused by harsh environmental abuse, manufacturing defects, and wear.
A. SEC errors B. Hard errors
C. Syndrome errors D. Soft errors

 

 

·         B. Hard errors

 

8. _________ can be caused by power supply problems or alpha particles.
A. Soft errors B. AGT errors
C. Hard errors D. SEC errors

 

 

·         B. AGT errors

·         9. The _________ exchanges data with the processor synchronized to an external clock signal and running at the full speed of the processor/memory bus without imposing wait states.
A. DDR-DRAM B. SDRAM
C. CDRAM D. none of the above

 

·         DDR-DRAM

 

10. ________ can send data to the processor twice per clock cycle.
A. CDRAM B. SDRAM
C. DDR-DRAM D. RDRAM

 

 

·         C. DDR-DRAM

 

11. __________ increases the data transfer rate by increasing the operational frequency of the RAM chip and by increasing the prefetch buffer from 2 bits to 4 bits per chip.
A. DDR2 B. RDRAM
C. CDRAM D. DDR3

 

·         DDR2

 

12. ________ increases the prefetch buffer size to 8 bits.
A. CDRAM B. RDRAM
C. DDR3 D. all of the above

 

·         C. DDR3

 

13. Theoretically, a DDR module can transfer data at a clock rate in the range of __________ MHz.
A. 200 to 600 B. 400 to 1066
C. 600 to 1400 D. 800 to 1600

 

 

·         200 to 600

 

14. A DDR3 module transfers data at a clock rate of __________ MHz.
A. 600 to 1200 B. 800 to 1600
C. 1000 to 2000 D. 1500 to 3000

 

·         B. 800 to 1600

 

15. The ________ enables the RAM chip to preposition bits to be placed on the data bus as rapidly as possible.
A. flash memory B. Hamming code
C. RamBus D. Buffer

 

·         D. buffer

 

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