What is the use of Scan Disk ?

What is the use of Scan Disk ?
by

1 Answer

Answer :

Below is the use of scandisk - 1. Hard disk speed is increased by applying the Scan Disk command . 2. Fixes any dirt , bad sectors, etc. inside the hard disk. 3. Hard disk does not feel any sound.
by

Related questions

What is the difference between Scan disk memory cards and the others?

Description : What is the difference between Scan disk memory cards and the others?

Last Answer : Sandisk memory cards are functionally equivalent to all other similiar memory cards, it just is branded.

............. policy selects the disk I/O request that requires the least movement of the disk arm from its current position. A) FSCAN B) SSTF C) SCAN D) C-SCAN

Description : ............. policy selects the disk I/O request that requires the least movement of the disk arm from its current position. A) FSCAN B) SSTF C) SCAN D) C-SCAN

Last Answer : B) SSTF

Consider a disk queue with request for input/output to block on cylinders 98, 183, 37, 122, 14, 124, 65, 67 in that order. Assume that disk head is initially positioned at cylinder 53 and moving towards cylinder number 0. The total number of head movements using Shortest Seek Time First (SSTF) and SCAN algorithms are respectively (A) 236 and 252 cylinders (B) 640 and 236 cylinders (C) 235 and 640 cylinders (D) 235 and 252 cylinders

Description : Consider a disk queue with request for input/output to block on cylinders  98, 183, 37, 122, 14, 124, 65, 67  in that order. Assume that disk head is initially positioned at cylinder 53 and moving ... and 252 cylinders (B) 640 and 236 cylinders (C) 235 and 640 cylinders (D) 235 and 252 cylinders

Last Answer : Answer: 236 and 208 cylinders Explanation: SSTF Initial head position =53 The closest queue to initial head position=65 head moves from 53 to 65=12 head moves from 65 to 67=2 head moves from 67 ... 122=24 head moves from 122 to 124=2 head moves from 124 to 183=59 Total head movement=208 

Which of the following statements is not true about disk-arm scheduling algorithms ? (A) SSTF (shortest seek time first) algorithm increases performance of FCFS. (B) The number of requests for disk service are not influenced by file allocation method. (C) Caching the directories and index blocks in main memory can also help in reducing disk arm movements. (D) SCAN and C-SCAN algorithms are less likely to have a starvation problem.

Description : Which of the following statements is not true about disk-arm scheduling algorithms ? (A) SSTF (shortest seek time first) algorithm increases performance of FCFS. (B) The number of requests for disk ... arm movements. (D) SCAN and C-SCAN algorithms are less likely to have a starvation problem.

Last Answer : (B) The number of requests for disk service are not influenced by file allocation method.

Consider a disk queue with I/O requests on the following cylinders in their arriving order: 6,10,12,54,97,73,128,15,44,110,34,45 The disk head is assumed to be at cylinder 23 and moving in the direction of decreasing number of cylinders. Total number of cylinders in the disk is 150. The disk head movement using SCAN-scheduling algorithm is: (1) 172 (2) 173 (3) 227 (4) 228

Description : Consider a disk queue with I/O requests on the following cylinders in their arriving order: 6,10,12,54,97,73,128,15,44,110,34,45 The disk head is assumed to be at cylinder 23 and moving in the direction ... . The disk head movement using SCAN-scheduling algorithm is: (1) 172 (2) 173 (3) 227 (4) 228

Last Answer : (2) 173

_____ is unauthorized access to or use of data, systems, server or networks including any attempt to probe scan or test the vulnerability of a system, server or network or to breach security or authentication measures without express authorization of the owner of the system, server or network: a) Hacking b) Cracking c) Viruses d) None of These

Description : _____ is unauthorized access to or use of data, systems, server or networks including any attempt to probe scan or test the vulnerability of a system, server or network or to breach security or authentication ... the system, server or network: a) Hacking b) Cracking c) Viruses d) None of These

Last Answer : a) Hacking

_____ is unauthorized access to or use of data, systems, server or networks including any attempt to probe scan or test the vulnerability of a system, server or network or to breach security or authentication measures without express authorization of the owner of the system, server or network: a) Hacking b) Cracking c) Viruses d) None of These

Description : _____ is unauthorized access to or use of data, systems, server or networks including any attempt to probe scan or test the vulnerability of a system, server or network or to breach security or authentication ... the system, server or network: a) Hacking b) Cracking c) Viruses d) None of These

Last Answer : a) Hacking

Which of the following does not affect the resolution of a video display image? A) Bandwidth B) Raster scan rage C) Vertical and horizontal lines of resolution D) Screen size

Description : Which of the following does not affect the resolution of a video display image? A) Bandwidth B) Raster scan rage C) Vertical and horizontal lines of resolution D) Screen size

Last Answer : Answer : D

. As an ethical hacker, you should scan all ________ UDP and TCP port on each network host that’s found by your scanner. a. 65535 b. 65353 c. 65333 d. 65555

Description : . As an ethical hacker, you should scan all ________ UDP and TCP port on each network host that’s found by your scanner. a. 65535 b. 65353 c. 65333 d. 65555

Last Answer : a. 65535

Which Nmap scan is does not completely open a TCP connection? A. SYN stealth scan B. TCP scan C. XMAS tree scan D. ACK scan

Description : Which Nmap scan is does not completely open a TCP connection? A. SYN stealth scan B. TCP scan C. XMAS tree scan D. ACK scan

Last Answer : A. SYN stealth scan

If you undergo a CAT scan then you have been subjected to (1) a computer aided test (2) a computerised axial topography (3) a computer aided tomography (4) a computerised axial tomography

Description : If you undergo a CAT scan then you have been subjected to (1) a computer aided test (2) a computerised axial topography (3) a computer aided tomography (4) a computerised axial tomography

Last Answer : a computerised axial tomography

__________ means sharing a program with someone who is not authorized by the license agreement to use it. A. Softloading B. Hard Disk loading C. Internet Downloading D. Renting

Description : __________ means sharing a program with someone who is not authorized by the license agreement to use it. A. Softloading B. Hard Disk loading C. Internet Downloading D. Renting

Last Answer : D. All of the above

Virus can spread from one computer to another via use of: a) Infected Floppy Disk b) Computer Networks c) Internet d) All of Above e) None of These

Description : Virus can spread from one computer to another via use of: a) Infected Floppy Disk b) Computer Networks c) Internet d) All of Above e) None of These

Last Answer : d) All of Above

What is a portable hard disk ?

Description : What is a portable hard disk ?

Last Answer : A portable hard disk is a fence. In a word , a portable hard disk is a hard disk that can be used anywhere. A portable hard disk is a portable hard disk that is used with a cable by inserting the hard disk of a laptop or desktop into another casing.

What is Flash Disk or Pen Disk ?

Description : What is Flash Disk or Pen Disk ?

Last Answer : CDs , DVDs , Zip discs have more data storage capacity, but they require a drive to store and read data. At present, a new helpful memory medium has come out for easy writing and reading of data by ... hold data for up to 10 years. There is no hassle in installing due to hot plug and play facility.

What is the problem with hard disk ?

Description : What is the problem with hard disk ?

Last Answer : Disadvantages of hard disk Hard disk costs more. If the hard disk is damaged, it cannot be repaired. The security of files stored on the hard disk is relatively low. When infected with the virus, it becomes numb. Difficulty in transportation due to heavy load.

What are the benefits of hard disk ?

Description : What are the benefits of hard disk ?

Last Answer : Advantages of Hard Disk: Hard disk works in both Sequential Access and Direct Access methods. Hard disk can store a lot of information. It is a fast storage medium. Hard disk security is high.

How many types of hard disk drives ?

Description : How many types of hard disk drives ?

Last Answer : Computer hard disk can be divided into four main parts. These are: 1. IDE or PATA ( IDE / PATA) hard disk drive 2. SATA hard disk drive 3. Scaji ( SCSI) hard disk drive 4. SAS hard disk drive

What is a Startup Disk ?

Description : What is a Startup Disk ?

Last Answer : : The start-up disk is the start-up file of the operating system that loads the computer through the loading. And the memory of the computer that is stored in these start-up files is the ... startup disk for Windows with a GUI interface, and floppy disks as a startup diskette for Dos Maid.

What is a disk ?

Description : What is a disk ?

Last Answer : Disk is the base for storing all the information of computer . There are two types of disks . For example: Floppy Disk Hard Disk There is another type of Disk available in the market which is called Compact Disk ... Gigabyte (GB) to 800 Gigabyte (GB) DVD Disk: 700 Megabyte (MB) to 12 Gigabyte (GB )

What is Disk Clean- up ?

Description : What is Disk Clean- up ?

Last Answer : Disk Cleanup is an option on Windows computer systems that can be used to remove many unnecessary files stored on the computer system such as temporary files , various hidden files downloaded from ... etc. Performance can be enhanced by removing unnecessary files and keeping the hard disk free.

What is Winchester Disk ?

Description : What is Winchester Disk ?

Last Answer : Disks that are attached to a computer and cannot be separated are called Winchester disks.

What is Hard Disk ?

Description : What is Hard Disk ?

Last Answer : Hard disk is a hard magnetic disk which is more expensive than floppy disk and has more capacity .

What is a floppy disk ?

Description : What is a floppy disk ?

Last Answer : A floppy disk is a thin disk made of iron containing a relatively low content of iron oxide or magnetic material.

How can the user determine what programs are available on a computer? 1) Checking the hard disk properties 2) Viewing the installed programs during the booting process 11 3) Checking the operating system for a list of installed programs. 4) Checking the existing files saved on the disk 5) None of these

Description : How can the user determine what programs are available on a computer? 1) Checking the hard disk properties 2) Viewing the installed programs during the booting process 11 3) Checking the operating system ... of installed programs. 4) Checking the existing files saved on the disk 5) None of these

Last Answer : Answer :4

What is the process of copying software programs from secondary storage media to the hard disk called? 1) Configuration 2) Download 3) Storage 4) Upload 5) Installation

Description : What is the process of copying software programs from secondary storage media to the hard disk called? 1) Configuration 2) Download 3) Storage 4) Upload 5) Installation

Last Answer : Answer :5

This component is required to process data into information and consists of integrated circuits. 1) Hard disk 2) RAM 3) CPU 8 4) ROM 5) None of these

Description : This component is required to process data into information and consists of integrated circuits. 1) Hard disk 2) RAM 3) CPU 8 4) ROM 5) None of these

Last Answer : Answer :3

Virtual memory is 1) Memory on the hard disk that the CPU uses as an extended RAM 2) RAM 3) Only necessary if you do not have any RAM in your computer 4) A back up device for floppy disks 5) None of these

Description : Virtual memory is 1) Memory on the hard disk that the CPU uses as an extended RAM 2) RAM 3) Only necessary if you do not have any RAM in your computer 4) A back up device for floppy disks 5) None of these

Last Answer : Answer :2

To what temporary area can you store text and other data, and later paste them to another location? 1) The clipboard 2) ROM 3) CD-ROM 4) The hard disk 5) None of these

Description : To what temporary area can you store text and other data, and later paste them to another location? 1) The clipboard 2) ROM 3) CD-ROM 4) The hard disk 5) None of these

Last Answer : Answer :1

Which of the following is an example of connectivity? 1) Internet 2) Floppy disk 3) Power cord 4) Data 5) None of these

Description : Which of the following is an example of connectivity? 1) Internet 2) Floppy disk 3) Power cord 4) Data 5) None of these

Last Answer : Answer :1

Which of the following is the largest manufacturer of Hard Disk Drives? A) IBM B) Seagate C) Microsoft D) 3M

Description : Which of the following is the largest manufacturer of Hard Disk Drives? A) IBM B) Seagate C) Microsoft D) 3M

Last Answer : Answer : B

The system unit of a personal computer typically contains all of the following except: A) Microprocessor B) Disk controller C) Serial interface D) Modem

Description : The system unit of a personal computer typically contains all of the following except: A) Microprocessor B) Disk controller C) Serial interface D) Modem

Last Answer : Answer : D

The capacity of 3.5 inch floppy disk is A) 1.40 MB B) 1.44 GB C) 1.40 GB D) 1.44 MB

Description : The capacity of 3.5 inch floppy disk is A) 1.40 MB B) 1.44 GB C) 1.40 GB D) 1.44 MB

Last Answer : Answer : D

A floppy disk contains A) Circular tracks only B) Sectors only C) Both circular tracks and sectors D) None of the above

Description : A floppy disk contains A) Circular tracks only B) Sectors only C) Both circular tracks and sectors D) None of the above

Last Answer : Answer : C

Which of the following is not a primary storage device? A) Magnetic tape B) Magnetic disk C) Optical disk D) All of the above

Description : Which of the following is not a primary storage device? A) Magnetic tape B) Magnetic disk C) Optical disk D) All of the above

Last Answer : Answer : D

Most of the inexpensive personal computers do not have any disk or diskette drive. What is the name of such computes? A) Home computers B) Diskless computers C) Dedicated computers D) General purpose computers

Description : Most of the inexpensive personal computers do not have any disk or diskette drive. What is the name of such computes? A) Home computers B) Diskless computers C) Dedicated computers D) General purpose computers

Last Answer : Answer : B

Which of the following is not a primary storage device? A) Magnetic tape B) Magnetic disk C) Optical disk D) All of above

Description : Which of the following is not a primary storage device? A) Magnetic tape B) Magnetic disk C) Optical disk D) All of above

Last Answer : Answer : D

Which is an item of storage medium in the form of circular plate? A) Disk B) CPU C) Printer D) ALU

Description : Which is an item of storage medium in the form of circular plate? A) Disk B) CPU C) Printer D) ALU

Last Answer : Answer : A

Which of the following devices have a limitation that we can only store information to it but cannot erase or modify it? A) Floppy Disk B) Hard Disk C) Tape Drive D) CDROM

Description : Which of the following devices have a limitation that we can only store information to it but cannot erase or modify it? A) Floppy Disk B) Hard Disk C) Tape Drive D) CDROM

Last Answer : Answer : D

Dot-matrix is a type of A) Tape B) Printer C) Disk D) Bus

Description : Dot-matrix is a type of A) Tape B) Printer C) Disk D) Bus

Last Answer : Answer : B

What is the latest write-once optical storage media? A) Digital paper B) Magneto-optical disk C) WORM disk D) CD-ROM disk

Description : What is the latest write-once optical storage media? A) Digital paper B) Magneto-optical disk C) WORM disk D) CD-ROM disk

Last Answer : Answer : D

Which device is used to backup the data? A) Floppy Disk B) Tape C) Network Drive D) All of the above

Description : Which device is used to backup the data? A) Floppy Disk B) Tape C) Network Drive D) All of the above

Last Answer : Answer : D

The most important advantage of a video disk is A) Compactness B) Potential capacity C) Durability D) Cost effectiveness

Description : The most important advantage of a video disk is A) Compactness B) Potential capacity C) Durability D) Cost effectiveness

Last Answer : Answer : B

Which of the following disk is fixed disk? A) Hard Disks B) Flash Disks C) Blu-Ray Disks D) DVDs

Description : Which of the following disk is fixed disk? A) Hard Disks B) Flash Disks C) Blu-Ray Disks D) DVDs

Last Answer : Answer : A

The ALU of a computer normally contains a number of high speed storage element called A) Semiconductor memory B) Registers C) Hard disks D) Magnetic disk

Description : The ALU of a computer normally contains a number of high speed storage element called A) Semiconductor memory B) Registers C) Hard disks D) Magnetic disk

Last Answer : Answer : B

IMB launched its first personal computer called IBM-PC in 1981. It had chips from Intel, disk drives from Tandon, operating system from Microsoft, the printer from Epson and the application software from everywhere. Can you name the country which contribute A) India B) China C) Germany D) Taiwan

Description : IMB launched its first personal computer called IBM-PC in 1981. It had chips from Intel, disk drives from Tandon, operating system from Microsoft, the printer from Epson and the application software from everywhere. Can you name the country which contribute A) India B) China C) Germany D) Taiwan

Last Answer : Answer : D

What does the disk drive of a computer do? A) Rotate the disk B) Read the disk C) Load a program from the disk into the memory D) Both b and c

Description : What does the disk drive of a computer do? A) Rotate the disk B) Read the disk C) Load a program from the disk into the memory D) Both b and c

Last Answer : Answer : D

CD-ROM stands for A) Compactable Read Only Memory B) Compact Data Read Only Memory C) Compactable Disk Read Only Memory D) Compact Disk Read Only Memory

Description : CD-ROM stands for A) Compactable Read Only Memory B) Compact Data Read Only Memory C) Compactable Disk Read Only Memory D) Compact Disk Read Only Memory

Last Answer : Answer : D

The metal disks, which are permanently housed in, sealed and contamination free containers are called A) Hard disks B) Floppy disk C) Winchester disk D) Flexible disk

Description : The metal disks, which are permanently housed in, sealed and contamination free containers are called A) Hard disks B) Floppy disk C) Winchester disk D) Flexible disk

Last Answer : Answer : C

Which of the following is a storage device? A) Tape B) Hard Disk C) Floppy Disk D) All of the above

Description : Which of the following is a storage device? A) Tape B) Hard Disk C) Floppy Disk D) All of the above

Last Answer : Answer : D