DDR had twice the throughput of SDRAM at the same system clock speed due to the
ID: 3744262 • Letter: D
Question
DDR had twice the throughput of SDRAM at the same system clock speed due to the ability to clock two words per clock cycle, one on the rising edge and one on the falling edge of the clock. DDR2 doubles the throughput of DDR by _____.
Clock doubling the input/output circuits on the chips within the DDR2 module
Doubling the width of the data bus from 32 bits to 64 bits
Doubling the buffer size used by DDR
Increasing the voltage used
DDR3 increased the throughput from that of DDR2 by _____.
Clock doubling the input/output circuits on the chips within the DDR3 module
Doubling the width of the data bus from 64 bits to 128 bits
Doubling the buffer size from that used by DDR2
Increasing the voltage used
Match the voltage to that used by the correct type of RAM.
SDRAM 1.2 V
DDR 1.5 V
DDR2 3.3 V
DDR3 2.5 V
DDR4 1.8 V
In order to take advantage of dual-channel memory, an equal number of modules must be used on each channel and there must be the same amount of memory installed in each channel.
You are looking at two DDR3 DIMMs. One of them indicates “CL8” on the label and the other indicates “CL6.” These numbers refer to the RAM’s ______.
Transfer speed
Latency
Words per clock cycle
Error recovery capability
Parity and ECC memory are typically found in critical mission machines such as bank servers. Both are able to detect and correct errors.
Virtual memory involves the use of storage devices (hard drive or SSD) supplementing a deficiency in the amount of installed RAM. Which two of the following refer to the storage location used for virtual memory?
Page file
Swap file
VM file
Pipe file
System file
Explain what “disk thrashing” is.
A feature that allows the use of flash media for virtual memory is called _____.
Virtualization
ReadyBoost
RAMdrive
WarpDrive
Information about each DIMM is stored in a small chip on the module called the _____ chip.
RIMM
ECC
SPD
Parity
Explanation / Answer
1)
Option A
Clock doubling the input/output circuits on the chips within the DDR2 module
2)
Option C
Doubling the buffer size from that used by DDR2
3)
SDRAM 3.3 V
DDR 2.5 V
DDR2 1.8 V
DDR3 1.5 V
DDR4 1.2 V
4)
True
5)
Option B
Lantency
6)
Flase
7)
A abd B
Page file
Swap file
8)
In systems that use virtual memory, the resulting condition of a hard drive being used excessively for virtual memory because the physical memory (i.e., RAM) is full.
Disk thrashing considerably slows down the performance of a system because data has to be transferred back and forth from the hard drive to the physical memory.
9)
Option B
ReadyBoost
10)
Option A
Rimm
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