Computer Fundamental Miscellaneous - Study Mode
[#691] An advantage of blocking a tape is that
Correct Answer
(D) less tape is used to store the same amount of data
Explanation
Solution: An advantage of blocking a tape is that less tape is used to store the same amount of data . Tape storage is a system in which magnetic tape is used as a recording media to store data. With data volumes growing rapidly worldwide, tape storage is the most suitable system for data storage requiring large capacity.
[#692] Perforated paper used as input or output media is known as
Correct Answer
(C) Punched paper tape
Explanation
Solution: Punched paper tape is a form of perforated paper that was historically used as an input or output medium in early computing and telecommunication systems. It stores data using patterns of holes punched in specific positions across the width of the tape, each row representing a character or instruction. Paper tape (Option A) is a general term and may not explicitly refer to the punched version. Magnetic tape is a different storage medium that uses magnetic signals, not perforations. Card punch refers to punched cards, not tapes. Therefore, the correct and most specific term for perforated paper used as input or output media is punched paper tape .
[#693] What is the byte capacity of a drum which is 5 inch high, 10 inch diameter, and which has 60 tracks per inch and bit density of 800 bits per inch?
Correct Answer
(A) 942000 bytes
Explanation
Solution: The byte capacity of a drum which is 5 inch high, 10 inch diameter, and which has 60 tracks per inch and bit density of 800 bits per inch, Total capacity = (areal density) x (total surface area) Areal density = 60 x 800 = 48000 bits per inch Total surface area = 2πrh = 2 × π × 5 × 5 = 50π Total capacity = $$frac{{left( {50 imes 3.14 imes 48000}
ight)}}{8}$$ xa0 xa0 = 942000 bytes.
[#694] Ethernet uses
Correct Answer
(A) Bus topology
Explanation
Solution: Ethernet generally uses Bus Topology. Ethernet operates in two layers of the OSI model, Physical Layer, and Data Link Layer. For Ethernet, the protocol data unit is Frame since we mainly deal with DLL. In order to handle collision, the Access control mechanism used in Ethernet is CSMA/CD.
[#695] What is the latest write-once optical storage media?
Correct Answer
(C) WORM disk
Explanation
Solution: The correct answer is Option C: WORM disk. Let's break down why: WORM stands for "Write Once Read Many". This means you can write data to the disk once, and then read that data many times. It's a type of optical storage where the data is permanently recorded. Why not the other options? Digital paper: This is still a developing technology and not a standard optical storage medium. Magneto-optical disk: These are rewritable, not write-once. CD-ROM disk: CD-ROMs are typically pre-recorded or mastered, and while they are read-only for the user after creation, the creation process itself is not "write-once" in the same way a WORM disk is. Furthermore, CD-ROM is an older technology. None of the above: WORM is a valid write-once optical storage media. Therefore, a WORM disk best fits the description of a latest write-once optical storage media.