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Computer Science 162 - Fall 1992 - Smith - Midterm 1

Computer Science 162 - Fall 1992 - Smith - Midterm 1 - CS...

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CS 162, Midterm 1, Fall 1992 CS 162, Fall 1992 Midterm 1 Professor A. Smith Problem #1 Explain the difference between a process and a thread. (10 points) Problem #2 This question is multiple choice. Please place your answers at the bottom.(22 points) i. A typical rotation time for a magnetic disk is: A)1.5 ms B)15 ms C)15 microsec. D)5 ms ii. A typical transfer rate for high performance reel to reel tape is: A)100KB/sec. B)500KB/sec. C)1.25KB/sec. D)4MB/sec. iii. The width of an interrecord gap on reel to reel magnetic tape is approximately: A) 0.1 inch B) 0.6 inch C) 1.1 inches D) 3 inches E) 0.01 inch iv. The read/write speed of an Exabyte tape is approximately: A) 10KB/sec. B) 50KB/sec. C) 200KB/sec. D) 1MB/sec. E) 5MB/sec. v. A typical average seek time for a magnetic disk is: A) 1usec B) 15usec C) 1ms. D) 15ms. vi. The maximum storage capacity of an IBM type cartridge tape is approximately: A) 10MB. B) 50MB. C) 200MB D) 1GB E) 5GB F) 10GB vii. Writing a read/write optical disk takes X as long as reading it: A) the same: B) twice C) half D) ten times viii. The record size for a line printer is:
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