lesson 9 Flashcards
(20 cards)
: Which type of memory provides the fastest access time?
- A) DRAM
- B) SRAM
- C) Flash memory
- D) Hard disk
B) SRAM
What is the primary difference between SRAM and DRAM?
- A) SRAM is non-volatile while DRAM is volatile
- B) SRAM uses capacitors while DRAM uses flip-flops
- C) SRAM does not need refreshing while DRAM requires periodic refreshing
- D) SRAM is slower but has higher capacity than DRAM
C) SRAM does not need refreshing while DRAM requires periodic refreshing
Which of the following is a non-volatile memory?
- A) DRAM
- B) SRAM
- C) ROM
- D) Cache memory
C) ROM
What is memory interleaving?
- A) A technique to increase memory capacity
- B) A technique to organize memory into multiple banks that can be accessed simultaneously
- C) A technique to reduce power consumption
- D) A technique to improve error detection
B) A technique to organize memory into multiple banks that can be accessed simultaneously
Which of the following is NOT a type of ROM?
- A) PROM
- B) EPROM
- C) EEPROM
- D) SDROM
D) SDROM
What is the purpose of refresh operations in DRAM?
- A) To increase access speed
- B) To maintain data integrity by recharging capacitors
- C) To clear memory for new data
- D) To reduce power consumption
B) To maintain data integrity by recharging capacitors
Which of the following best describes DDR SDRAM?
- A) Memory that transfers data on both the rising and falling edges of the clock signal
- B) Memory that uses dual data registers
- C) Memory that has double the capacity of regular SDRAM
- D) Memory that operates at twice the voltage of regular SDRAM
A) Memory that transfers data on both the rising and falling edges of the clock signal
What is the primary advantage of flash memory over EEPROM?
- A) Non-volatility
- B) Higher capacity and faster erase/write operations
- C) Lower power consumption
- D) Better reliability
B) Higher capacity and faster erase/write operations
Which error detection method can detect but not correct errors?
- A) Parity checking
- B) Hamming code
- C) Reed-Solomon code
- D) ECC memory
A) Parity checking
What is the primary disadvantage of SRAM compared to DRAM?
- A) Slower access time - B) Higher power consumption - C) Lower density (fewer bits per chip) - D) Requires refresh operations
C) Lower density (fewer bits per chip)
: Which of the following is a characteristic of synchronous DRAM (SDRAM)?
- A) It operates independently of the system clock - B) It synchronizes its operation with the system clock - C) It does not require refresh operations - D) It has lower capacity than asynchronous DRAM
B) It synchronizes its operation with the system clock
What is the purpose of Error-Correcting Code (ECC) memory?
- A) To increase memory capacity - B) To detect and correct memory errors - C) To improve memory access time - D) To reduce power consumption
B) To detect and correct memory errors
: Which of the following is NOT a characteristic of flash memory?
- A) Non-volatile - B) Electrically erasable - C) Requires refresh operations - D) Can be erased in blocks
C) Requires refresh operations
: What is the primary advantage of memory interleaving?
- A) Increased memory capacity - B) Improved memory bandwidth - C) Reduced power consumption - D) Enhanced error detection
B) Improved memory bandwidth
Which of the following best describes the organization of a memory chip with dimensions 1M × 8?
- A) 1 million words of 8 bits each - B) 8 million words of 1 bit each - C) 1 million chips with 8 bits each - D) 8 bits organized in 1 million rows
A) 1 million words of 8 bits each
: What is the primary limitation of PROM (Programmable Read-Only Memory)?
- A) It cannot be programmed by the user - B) It can be programmed only once - C) It requires special voltage for programming - D) It has very low capacity
: B) It can be programmed only once
: Which of the following memory types uses floating-gate transistors?
- A) DRAM - B) SRAM - C) Flash memory - D) Magnetic RAM
C) Flash memory
What is the cycle time of a memory?
- A) The time required to complete a read operation - B) The time required to complete a write operation - C) The minimum time between the start of two successive memory operations - D) The time required to refresh the entire memory
: C) The minimum time between the start of two successive memory operations
Which of the following is a characteristic of MRAM (Magnetoresistive RAM)?
- A) Uses electric charge to store data - B) Requires refresh operations - C) Non-volatile with unlimited write endurance - D) Slower than DRAM
C) Non-volatile with unlimited write endurance
What is the primary advantage of 3D XPoint memory?
- A) Highest capacity among all memory types - B) Lowest cost per bit - C) Combines high density, non-volatility, and speed - D) Lowest power consumption
C) Combines high density, non-volatility, and speed
