Q.1

What is the difference between static RAM and dynamic RAM?

  • Static RAM must be refreshed, dynamic RAM does not.
  • There is no difference.
  • Dynamic RAM must be refreshed, static RAM does not.
Q.2

What two functions does a DRAM controller perform?

  • address multiplexing and data selection
  • address multiplexing and the refresh operation
  • data selection and the refresh operation
  • data selection and CPU accessing
Q.3

L1 is known as ________.

  • primary cache
  • secondary cache
  • DRAM
  • SRAM
Q.4

Which of the following memories is volatile?

  • ROM
  • EROM
  • RAM
  • Flash
Q.5

Which of the following memories uses a MOS capacitor as its memory cell?

  • SRAM
  • DRAM
  • ROM
  • FIFO
Q.6

A CD-R disk is created by applying heat to special chemicals on the disk and these chemicals reflect less light than the areas that are not burned, thus creating the same effect as a pit does on a regular CD.

  • True
  • False
Q.7

Which of the following is not a flash memory mode or operation?

  • Burst
  • Read
  • Erase
  • Programming
Q.8

Microprocessors and memory ICs are generally designed to drive only a single TTL load. Therefore, if several inputs are being driven from the same bus, any memory IC must be ________.

  • buffered
  • decoded
  • addressed
  • stored
Q.9

Describe the timing diagram of a write operation.

  • First the data is set on the data bus and the address is set, then the write pulse stores the data.
  • First the address is set, then the data is set on the data bus, and finally the read pulse stores the data.
  • First the write pulse stores the data, then the address is set, and finally the data is set on the data bus.
  • First the data is set on the data bus, then the write pulse stores the data, and finally the address is set.
Q.10

Which of the following faults will the checkerboard pattern test for in RAM?

  • Short between adjacent cells
  • Ability to store both 0s and 1s
  • Dynamically introduced errors between cells
  • All of the above
Q.11

What are the typical values of tOE?

  • 10 to 20 ns for bipolar
  • 25 to 100 ns for NMOS
  • 12 to 50 ns for CMOS
  • All of the above
Q.12

Dynamic memory cells store a data bit in a ________.

  • diode
  • resistor
  • capacitor
  • flip-flop
Q.13

What is the bit storage capacity of a ROM with a 1024 × 8 organization?

  • 1024
  • 2048
  • 4096
  • 8192
Q.14

Which type of ROM can be erased by UV light?

  • ROM
  • mask ROM
  • EPROM
  • EEPROM
Q.15

A major disadvantage of the mask ROM is that it:

  • is time consuming to change the stored data when system requirements change
  • is very expensive to change the stored data when system requirements change
  • cannot be reprogrammed if stored data needs to be changed
  • has an extremely short life expectancy and requires frequent replacement
Q.16

Which of the following is NOT a type of memory?

  • RAM
  • ROM
  • FPROM
  • EEPROM
Q.17

A CD-R disk is created by applying heat to special chemicals on the disk and these chemicals reflect less light than the areas that are not burned, thus creating the same effect as a pit does on a regular CD.

  • True
  • False
Q.18

A CD-R disk is created by applying heat to special chemicals on the disk and these chemicals reflect less light than the areas that are not burned, thus creating the same effect as a pit does on a regular CD.

  • True
  • False
Q.19

Which of the following is one of the basic characteristics of DRAMs?

  • DRAMs must have a constantly changing input.
  • DRAMs must be periodically refreshed in order to be able to retain data.
  • DRAMs have a broader "dynamic" storage range than other types of memories.
  • DRAMs are simpler devices than other types of memories.
Q.20

Which of the following best describes static memory devices?

  • memory devices that are magnetic in nature and do not require constant refreshing
  • memory devices that are magnetic in nature and require constant refreshing
  • semiconductor memory devices in which stored data will not be retained with the power applied unless constantly refreshed
  • semiconductor memory devices in which stored data is retained as long as power is applied
Q.21

The main advantage of semiconductor RAM is its ability to:

  • retain stored data when power is interrupted or turned off
  • be written to and read from rapidly
  • be randomly accessed
  • be sequentially accessed
Q.22

Which of the following describes the action of storing a bit of data in a mask ROM?

  • A 1 is stored in a bipolar cell by opening the base connection to the address line.
  • A 0 is stored in a bipolar cell by shorting the base connection to the address line.
  • A 1 is stored by connecting the gate of a MOS cell to the address line.
  • A 0 is stored by connecting the gate of a MOS cell to the address line.
Q.23

Which is not a removable drive?

  • Zip
  • Jaz
  • Hard
  • SuperDisk
Q.24

Which is/are the basic refresh mode(s) for dynamic RAM?

  • Burst refresh
  • Distributed refresh
  • Open refresh
  • Burst refresh and distributed refresh
Q.25

How many address bits are needed to select all memory locations in the 2118 16K × 1 RAM?

  • 8
  • 10
  • 14
  • 16
Q.26

Dynamic memory cells store a data bit in a ________.

  • diode
  • resistor
  • capacitor
  • flip-flop
Q.27

The main advantage of bipolar (TTL) memories over MOS memories is speed.

  • True
  • False
Q.28

If a memory design allows a storage location to be accessed without first sequencing through other locations, it is called Random Access Memory.

  • True
  • False
Q.29

A CD player is an example of a device that has random access capability.

  • True
  • False
Q.30

Address decoding for dynamic memory chip control may also be used for:

  • controlling refresh circuits
  • read and write control
  • chip selection and address location
  • memory mapping
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