What is Magnetic Tape? advantages or Disadvantages of Magnetic Tape
What is Magnetic Tape?
- Sequentially access storage device.
- Most popular storage medium for storage large data.
- Its plastic ribbon which is ½ or ¼ inch wide and 50 to 2400 feet long.
- It is coated with a magnetisable recording material.
- In a magnetic tape data are recorded serially.
- Information is recorded on the tape in the form of tiny invisible magnetized andnon magnetized spots.
- The tape ribbon is itself stored in reels or small cassette.
- Whenever we stored new data on the tape that contains old data the old data are automatically erased and new data are recorded in the same area.
- In older tape contains 7 tracks and they used 6-bit BCD code format for data recording.
- Morden magnetic tape contains 9 tracks & used 8-bit EBCDIC code format for data recording.
- There are various types of magnetic tape are used. Most commonly are:
o ½ inch tape reel
o ½ inch tape cartridge
o ¼ inch streamer tape
o 4 mm digital audio tape
Magnetic Tape Advantages:
- Large or unlimited storage capacity.
- Low cost.
- Light weight and compact in size.
- Copying of data is easy and fast.
- Possible to erase older data n store new data.
Magnetic Tape Disadvantages:
- Cannot be accessed directly because it’s a Sequential access device.
- Must be located in dust free environment otherwise it cause errors.
- Data are stored in coded form so cannot interpret or verify directly.
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Basic Computer Questions
Q : The main system board of the computer is called ____.
(A) Motherboard
(B) Processor
(C) Microchip
(D) None of these
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Q : Which of the following system components is the brain of a computer?
(A) Circuit board
(B) CPU
(C) Memory
(D) Network card
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Q : What is the built-in permanent memory in a computer called?
(A) RAM
(B) ROM
(C) CPU
(D) CD-ROM
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Q : Which of the following is the full form of NTFS?
(A) New Tree File system
(B) New Technology file system
(C) New Table file system
(D) Both B and C
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Q : Which of the following is not a hardware processing chip ?
(A) Processing chip
(B) printer
(C) mouse
(D) Java
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Q : The monitor of a computer is-
(A) storage device
(B) processing device
(C) input device
(D) output device
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Q : Which protocol does Ping use?
(A) TCP
(B) ARP
(C) ICMP
(D) BootP
(E) None of these
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Q : If you wish to extend the length of the network without having the signal degrade, you would use a ___.
(A) Gateway
(B) Router
(C) Modem
(D) Repeater
(E) Resonator
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Q : A series of instructions that tells a computer what to do and how to do it is called a ______.
(A) program
(B) command
(C) user response
(D) processor
(E) None of these
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Q : Verification of a login name and password is known as_____.
(A) Configuration
(B) Accessibility
(C) Authentication
(D) logging in
(E) None of these
Answer ⇒ ??