Mass Storage Structure

Multiple Choice questions & answers are available for a Computer Science students to clear GAT, NTS, ECAT exams, various technical interview, competitive examination, and other entrance exam. Mass Storage Structure is the important Topic for a computer science and technical students and one should practice these Mcqs to grasp good knowledge on the topic.

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2.
The amount of time required to read a block of data from a disk into memory is composed of seek time, rotational latency, and transfer time. Rotational latency refers to

The time its takes for the platter to make a full rotation

The time it takes for the read-write head to move into position over the appropriate track

The time it takes for the platter to rotate the correct sector under the head

None of the above

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3.
______ is used in operating system to separate mechanism from policy.

Single level implementation

Two level implementation

Multi level implementation

None of the above

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5.
The data-in register of I/O port is

Read by host to get input

Read by controller to get input

Written by host to send output

Written by host to start a command

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6.
The host sets _____ bit when a command is available for the controller to execute.

Write

Status

Command-ready

Control

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7.
When hardware is accessed by reading and writing to the specific memory locations, then it is called

Port-mapped I/O

Controller-mapped I/O

Bus-mapped I/O

None of the mentioned

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8.
Device drivers are implemented to interface

Character devices

Block devices

Network devices

All of the mentioned

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9.
Which hardware triggers some operation after certain programmed count?

Programmable interval timer

Interrupt timer

Programmable timer

None of the mentioned

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10.
The device-status table contains

Each I/O device type

Each I/O device address

Each I/O device state

All of the mentioned

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12.
Which one of the following connects high-speed high-bandwidth device to memory subsystem and CPU.

Expansion bus

PCI bus

SCSI bus

None of the mentioned

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13.
A process is moved to wait queue when I/O request is made with

Non-blocking I/O

Blocking I/O

Asynchronous I/O

Synchronous I/O

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14.
In _______ information is recorded magnetically on platters.

Magnetic disks

Electrical disks

Assemblies

Cylinders

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15.
The heads of the magnetic disk are attached to a _____ that moves all the heads as a unit.

Spindle

Disk arm

Track

None of the mentioned

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