I/O CompArch

What does Amdahl’s Law primarily measure?

• CPU clock speed

• System performance improvement

• Storage capacity

• Bus transfer speed

Which I/O control method requires the CPU to manage every data transfer?

• Direct Memory Access (DMA)
  

• Interrupt-driven I/O

• Programmed I/O

• Channel-Attached I/O

Which of the following best describes Direct Memory Access (DMA)?

• CPU is always involved in data transfer

• Allows devices to transfer data directly to memory without CPU involvement

• Requires a separate hard drive controller

• Uses multiple CPUs for data transfer

What is the main function of an I/O Bus?

• Connects the CPU to the RAM

• Transfers data between I/O devices and the CPU

• Handles arithmetic operations in the processor

• Improves the computer’s graphical performance

In a hard disk drive, what component positions the read/write heads over the correct data track?

• Platter

• Actuator Arm

• Buffer

• System Bus

What is the main difference between CD-ROM and DVD?

• DVDs have a slower read speed than CDs

• CDs use a different laser technology than DVDs

• DVDs can store more data than CDs

• CDs are used for video while DVDs are for music

Which of the following RAID levels does NOT provide data redundancy?

• RAID 0

• RAID 1

• RAID 5

• RAID 6

Which data compression method assigns shorter codes to frequently used symbols?

• Arithmetic Coding

• Huffman Coding

• Run-Length Coding

• Statistical Coding

Which of the following images represents a Solid-State Drive (SSD)?

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In a hybrid RAID system, what are the main advantages? (Select all the applies)

• It reduces the number of drives needed

• It balances performance and reliability

• It eliminates the need for data backups

• It increases the need for CPU power