Which of the following is not a random access device tape or DVD?

Hence, the right answer is option 4 “CD”

Which of the following devices are random-access devices?

Random-access devices include hard drives, CD (compact disc) writers, and DVD (digital versatile disc) RAM (random-access memory) devices. The hard drive typically has a storage capacity of 20 gigabytes (GB) and a data transfer rate of over 10 megabytes (MB) per second.

Is tape a random-access device?

In this instance, access to the tape is arbitrary and hence considered random.

Why is RAM random-access?

RAM is called “random access” because any storage location can be accessed directly. … Every computer comes with a small amount of ROM that holds just enough programming (BIOS) so that the operating system can be loaded into RAM each time the computer is turned on.

Which type of storage device is random access memory?

RAM is primary storage device.It is a volatile memory. RAM is considered “random access” because you can access any memory cell directly if you know the row and column that intersect at that cell.

What is the difference between random and direct access?

Random access memory basically store information temporarily while direct access memory store information permanently. The Wikipedia article about direct access storage devices contrasts two access methods to information stored on physical devices: sequential access and direct access.

IMPORTANT:  What happens when your hard drive is completely full?

What allows random-access to a file?

Random access files permit nonsequential, or random, access to a file’s contents. To access a file randomly, you open the file, seek a particular location, and read from or write to that file. This functionality is possible with the SeekableByteChannel interface.

What are the 3 types of RAM?

Although all RAM basically serves the same purpose, there are a few different types commonly in use today:

  • Static RAM (SRAM)
  • Dynamic RAM (DRAM)
  • Synchronous Dynamic RAM (SDRAM)
  • Single Data Rate Synchronous Dynamic RAM (SDR SDRAM)
  • Double Data Rate Synchronous Dynamic RAM (DDR SDRAM, DDR2, DDR3, DDR4)

Why is RAM so important?

Why is computer memory (RAM) important? Computer random access memory (RAM) is one of the most important components in determining your system’s performance. … It stores the information your computer is actively using so that it can be accessed quickly. The more programs your system is running, the more you’ll need.

Information storage methods