What are the disadvantages of random access?

Answer 1

Assuming you're talking about tape storage.. mainly speed ! With sequential access, the medium has to be constantly rewound back to the start before the next relevant data can be accessed. The constant rewinding slows down the access time.

Answer 2

• High complexity in programming.
• Expensive hardware and software are require.
• File updation is more difficult when compared to that of sequential method.
• Less efficient use of storage space.