Computer Science 010
Introduction to Computer Applications

Fall 2010, Siena College

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Agenda

• Announcements
  • Lab 8 this week is an exam lab (but you knew that)
  • Office hour changes this week:
    • extra office hours Tuesday 2:30-4:00
    • no office hours Friday
• Exam 2 in one week
  • in class on Monday 11/15
  • closed book and notes
  • similar format to exam 1
  • focus on topics since first exam: later networking topics, web servers and clients, hardware, storage and file systems, operating systems
  • topic cutoff is the end of today's class and today's lecture assignment
• Lecture assignment recap
• Operating Systems
  • CPU and memory management
  • Hardware devices
  • OS kernel
  • User interfaces
  • Common OSs

Lecture Assignment 17

Due at the start of class, Wednesday, November 10.

Please submit answers to these questions in Blackboard by the start of class. We will discuss these questions at the start of class, so no late submissions are accepted.

1. Suppose your computer has a single processor and is running three programs: a DVD player application, an application that is creating a video file from a collection of digital photos, and a web browser visiting your favorite sites. Explain briefly how all programs can make progress (your DVD is playing without interruption, the video file is being created, and your browser is displaying the pages you request) and not interfere with one another's correct operation.
2. Give a reason why operating systems often require a device driver for a hardware device rather than including the support for the device in the kernel.

Note: the third question that was here originally has been postponed to a future assignment.