Explore topic-wise MCQs in Operating System.

This section includes 239 Mcqs, each offering curated multiple-choice questions to sharpen your Operating System knowledge and support exam preparation. Choose a topic below to get started.

151.

Type of magnetic tape named reel is known to be of size

A. 1/2 inch
B. 1/3 inch
C. 1/4 inch
D. 1/5 inch
Answer» B. 1/3 inch
152.

Storage which has a smallest storage capacity is

A. floppy disk
B. zip disk
C. hard disk
D. compact disk
Answer» B. zip disk
153.

What is the storage capacity of a dual layered Blue Ray disc?

A. 80 GB
B. 50 GB
C. 10 GB
D. 25 GB
Answer» C. 10 GB
154.

DVD technology uses an optical media to store the digital data. DVD is an acronym for

A. Digital Vector Disc
B. Digital Volume Disc
C. Digital Versatile Disc
D. Digital Visualization Disc
Answer» D. Digital Visualization Disc
155.

What type of devices are CDs or DVDs ?

A. Input
B. Output
C. Software
D. Storage
Answer» E.
156.

Which of the following has the smallest storage capacity ?

A. zip disk
B. hard disk
C. floppy disk
D. data cartridge
Answer» D. data cartridge
157.

What is the storage capacity of a single layered Blue Ray disc?

A. 80 GB
B. 50 GB
C. 10 GB
D. 25 GB
Answer» E.
158.

When you save to this, your data will remain intact even when the computer is turned off.

A. RAM
B. Motherboard
C. Secondary storage device
D. Primary storage device
Answer» D. Primary storage device
159.

What is the main purpose of the secondary storage device?

A. To Store Data
B. To Networking
C. To increase the speed of Computer
D. To Install Operating System
Answer» B. To Networking
160.

Storage capacity of secondary storage is said to be of

A. Virtually unlimited capacity
B. Virtually limited capacity
C. Virtually volatile capacity
D. Virtually non-volatile capacity
Answer» B. Virtually limited capacity
161.

Process of dividing the disk into tracks and sectors is called

A. tracking
B. allotting
C. crashing
D. formatting
Answer» E.
162.

CD-ROMs are pre-stamped by a process named to be

A. Stamping
B. Recording
C. Mastering
D. Manufacturing
Answer» D. Manufacturing
163.

Term which is used for the disk content that is recorded at the time of manufacturing and cannot be changed or erased by user is

A. read only
B. write only
C. run only
D. save only
Answer» B. write only
164.

Example of serial access store is

A. floppy disc
B. program tape
C. magnetic tape
D. magnetic disc
Answer» D. magnetic disc
165.

Storage devices falling in direct access form of secondary storage is/are of

A. One type
B. Two types
C. Three types
D. Four types
Answer» C. Three types
166.

Encoding scheme used by optical disk drives is named as

A. BCD
B. EBCDIC
C. ASCII
D. CLV
Answer» E.
167.

Which of the following correctly represents the track pattern of an optical disk ?

A. a
B. b
C. c
D. d
Answer» B. b
168.

Optical disk storage of direct access drive includes CD-ROM and

A. Winchester disk
B. Floppy disk
C. Zip disk
D. WORM disk
Answer» E.
169.

Warping may end up as twisted tape ribbon, which may cause

A. Loss of data
B. Deletion of data
C. Garbage values in data
D. Converted form of data
Answer» B. Deletion of data
170.

For positioning of read and write heads over desired track requires time, defined to be

A. Latency
B. Throughput time
C. Access time
D. Seek time
Answer» E.
171.

All of the followings are included in removable media except ………….

A. CD-ROMs
B. Diskette
C. DVDs
D. Hard Disk Drive
Answer» E.
172.

In streamer tape, number of tracks can vary depending upon the

A. Tape drive
B. Tape controller
C. Tape word length
D. Tape streaming
Answer» B. Tape controller
173.

A magnetic disk's surface is divided into invisible concentric circles known to be

A. Cells
B. Intervals
C. Tracks
D. Records
Answer» D. Records
174.

Reading data is performed in magnetic disk by

A. Lower surface
B. Read/write leads
C. Sectors
D. Track
Answer» C. Sectors
175.

To overcome limitations of primary storage, we can use

A. Flash memory
B. Cache memory
C. Auxiliary memory
D. Virtual memory
Answer» D. Virtual memory
176.

A normal CD-ROM usually can store up to __________data?

A. 680 KB
B. 680 Bytes
C. 680 MB
D. 680 GB
Answer» D. 680 GB
177.

As compared to diskettes, the hard disks are

A. Slowly accessed
B. Less rigid
C. More expensive
D. More portable
Answer» D. More portable
178.

Number of tracks possessed by a streamer tape is defined to be

A. 2-20 tracks
B. 3-30 tracks
C. 4-40 tracks
D. 5-50 tracks
Answer» D. 5-50 tracks
179.

A Digital Versatile Disk (DVD) can store______ Gigabyte of information.

A. 4.6
B. 5.6
C. 6.6
D. 7.6
Answer» B. 5.6
180.

During the recovery cycle from a faliure one

A. each pair of physical block is examined
B. specified pair of physical block is examined
C. first pair of physical block is examined
D. last pair of physical block is examined
Answer» B. specified pair of physical block is examined
181.

.............. Gigabytes = 1 Terabyte.

A. 1204
B. 1104
C. 1024
D. None of the above
Answer» D. None of the above
182.

In a computer system, related files are generally stored in the same

A. track
B. table
C. folder
D. wallet
Answer» D. wallet
183.

CD can store up to ___________ MB of data.

A. 550
B. 1000
C. 750
D. 1500
Answer» D. 1500
184.

Which of following can not be accessed randomly

A. DRAM
B. SRAM
C. ROM
D. Magnetic tape
Answer» E.
185.

1 gigabytes is equal to

A. 1024 bytes
B. 1024 kilobytes
C. 1024 megabytes
D. 1024 bits
Answer» D. 1024 bits
186.

The size of a floppy disks varies from

A. 250KB to 360 KB
B. 360 KB to 1 GB
C. 360 KB to 2 GB
D. 360 KB to 2.88 MB
Answer» E.
187.

Time a device takes to read actual data is classified as

A. transfer time
B. seek time
C. seek delay
D. access delay
Answer» B. seek time
188.

Backing store that have short access time and consists no moving parts is classified as

A. timed discs
B. bubble memory
C. exchangeable discs
D. non exchangeable discs
Answer» C. exchangeable discs
189.

A piece of time taken by disc to rotate it and read data from right place is classified as

A. rotational delay
B. access delay
C. seek time delay
D. reversal delay
Answer» B. access delay
190.

Type of backup storage in which data is read in a sequence is classified as

A. permanent access
B. storage access
C. direct access
D. serial access
Answer» E.
191.

In fixed head discs, rotational delay plus transfer time is equal to

A. access time
B. delay time
C. processing time
D. storage time
Answer» B. delay time
192.

Secondary storage memory type is

A. volatile memory
B. non volatile memory
C. impact memory
D. virtual memory
Answer» C. impact memory
193.

Which access method is used to access cassette tape?

A. Direct
B. Both Sequential and Direct
C. Sequential
D. None of the above
Answer» D. None of the above
194.

For recording data in magnetic disks, a standard binary code is used of size

A. 4 bits
B. 8 bits
C. 16 bits
D. 32 bits
Answer» C. 16 bits
195.

Large length of blank spaces to allow acceleration and deceleration are called

A. streamer gaps
B. cartridge gaps
C. block gaps
D. inter block gaps
Answer» E.
196.

Which device is used to backup the data?

A. Floppy Disk
B. Tape
C. Network Drive
D. All of the above
Answer» E.
197.

Storage location of information being accessed determines variation in

A. Data storage
B. Location
C. Access time
D. Processing time
Answer» D. Processing time
198.

CD-ROM stands for

A. Compactable Read Only Memory
B. Compactable Disk Read Only Memory
C. Compact Disk Read Only Memory
D. Compact Data Read Only Memory
Answer» D. Compact Data Read Only Memory
199.

In sequential access device, data can be retrieved in same way as

A. Operated
B. Accessed
C. Updated
D. Stored
Answer» E.
200.

The time required to locate and retrieve the data from the storage unit is

A. Access time
B. Access mode
C. Storage capacity
D. Storage cost
Answer» B. Access mode