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

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

Single level implementation

Two level implementation

Multi level implementation

None of the above

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

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

Write

Status

Command-ready

Control

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

8.
Device drivers are implemented to interface

Character devices

Block devices

Network devices

All of the mentioned

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

Programmable interval timer

Interrupt timer

Programmable timer

None of the mentioned

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

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

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

14.
In _______ information is recorded magnetically on platters.

Magnetic disks

Electrical disks

Assemblies

Cylinders

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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