MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -Latency is a synonym for delay. In telecommunications, low latency is associated with a positive user experience (UX) while high latency is associated with poor UX. In computer networking, latency is an expression of how much time it takes for a data packet to travel from one designated point to another.

Detailed explanation-2: -The average rotational latency for a disk is half the amount of time it takes for the disk to make one revolution. Rotational Latency time depends on the rotational speed of a disk or spindle motor, measured in revolutions per minute (RPM).

Detailed explanation-3: -Seek time is the time taken for a hard disk controller to locate a specific piece of stored data. Other delays include transfer time (data rate) and rotational delay (latency). When anything is read or written to a disc drive, the read/write head of the disc needs to move to the right position.

Detailed explanation-4: -Define latency, transfer and seek time with respect to disk I/O. Seek time is the time required to move the disk arm to the required track. Rotational delay or latency is the time it takes for the beginning of the required sector to reach the head. Sum of seek time (if any) and latency is the access time.