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DATE 2015-02-01

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MESSAGE
DATE 2015-02-02
FROM Ruben
SUBJECT Subject: [LIU Comp Sci] Operating Systems Quiz
From owner-learn-outgoing-at-mrbrklyn.com Mon Feb 2 02:41:08 2015
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Date: Mon, 02 Feb 2015 02:41:03 -0500
From: Ruben
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Subject: [LIU Comp Sci] Operating Systems Quiz
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Anyone want to do this with me, on by one: Maybe we can squeeze an A
out of this class:


Practice Exercises

1: What are the three main purposes of an operating system?

I hate these questions that have more than one answer: Try this from
the summary: An OS manages hardware, provides an environment for
applications, and forms an interface for the human users.


2) We have stressed the need for an operating system to make efficient use
of the computing hardware. When is it appropriate for the operating
system to forsake this principle and to “waste” resources? Why is such
a system not really wasteful?

In a cluster with a hot swap? It is not waste because one machine is
monitoring for failures and it needs to be ready in case of a failure?
Or maybe in SMP where processing is not shared equally between cores or
CPUs. It is a waste but it is a tradoff in order to leverage the OS when
it is running many processes under load.

I don't KNOW what answer they are fishing for here.

3) What is the main difficulty that a programmer must overcome in writing
an operating system for a real-time environment?

He has to keep the response times within a narrow specification which
largely means he is very dependent on the OS timer and interupt managment.

4) Keeping in mind the various definitions of operating system, consider
whether the operating system should include applications such as web
browsers and mail programs. Argue both that it should and that it should
not, and support your answers.


It SHOULDN'T include email and browsers and I WILL NOT argue that it
should because that would be a lie perpetrated by Microsoft to brainwash
everyone, which as evidence from this question, was at least partly
successful.


5) How does the distinction between kernel mode and user mode function
as a rudimentary form of protection (security) system?

It prevents user applications from accidentally or purposely obstructing
normal OS function but forcing a privileged bit in kernel level commands.


6) Which of the following instructions should be privileged?
a. Set value of timer.
Yes

b. Read the clock.
No

c. Clear memory.
Like clear a number of pages? Yes

d. Issue a trap instruction.
No

e. Turn off interrupts.
Yes

f. Modify entries in device-status table.
Yes

g. Switch from user to kernel mode.
Yes

h. Access I/O device.
Yes


7) Some early computers protected the operating system by placing it in
a memory partition that could not be modified by either the user job
or the operating system itself. Describe two difficulties that you think
could arise with such a scheme.

1) Hot Swapping would be impossible
2) You couldn't load and unload Kernel Modules (turn on and off the
sound or the wifi)

8) Some CPUs provide for more than two modes of operation. What are
two possible uses of these multiple modes?

Backward comparability and emulation, adapt to different speeds or bus
sizes of hardware?


~~~~~~~~~~~~~~~~~~~~~~ That is all for now.


Timers could be used to compute the current time. Provide a short
description of how this could be accomplished.
Give two reasons why caches are useful. What problems do they solve?
What problems do they cause? If a cache can be made as large as the
device for which it is caching (for instance, a cache as large as a disk),
why not make it that large and eliminate the device?
Distinguish between the client–server and peer-to-peer models of
distributed systems.
Exercises
1.12
1.13
In a multiprogramming and time-sharing environment, several users
share the system simultaneously. This situation can result in various
security problems.
a.
What are two such problems?
b.
Can we ensure the same degree of security in a time-shared
machine as in a dedicated machine? Explain your answer.
The issue of resource utilization shows up in different forms in different
types of operating systems. List what resources must be managed
carefully in the following settings:
a.
Mainframe or minicomputer systems
b.
Workstations connected to servers
c.
Mobile computers
Exercises
51
1.14
1.15
1.16
1.17
1.18
1.19
1.20
1.21
1.22
1.23
1.24
Under what circumstances would a user be better off using a time-
sharing system than a PC or a single-user workstation?
Describe the differences between symmetric and asymmetric multipro-
cessing. What are three advantages and one disadvantage of multipro-
cessor systems?
How do clustered systems differ from multiprocessor systems? What is
required for two machines belonging to a cluster to cooperate to provide
a highly available service?
Consider a computing cluster consisting of two nodes runningdatabase.
Describe two ways in which the cluster software can manage
access to the data on the disk. Discuss the benefits and disadvantages of
each.
How are network computers different from traditional personal com-
puters? Describe some usage scenarios in which it is advantageous to
use network computers.
What is the purpose of interrupts? How does an interrupt differ
fromtrap? Can traps be generated intentionally by a user program? If so, for
what purpose?
Direct memory access is used for high-speed I/O devices in order to
avoid increasing the CPU’s execution load.
a.
How does the CPU interface with the device to coordinate the
transfer?
a
a
b.
How does the CPU know when the memory operations are com-
plete?
c.
The CPU is allowed to execute other programs while the DMA
controller is transferring data. Does this process interfere with
the execution of the user programs? If so, describe what forms
of interference are caused.
Some computer systems do not provide a privileged mode of operation
in hardware. Is it possible to construct a secure operating system for
these computer systems? Give arguments both that it is and that it is not
possible.
Many SMP systems have different levels of caches; one level is local to
each processing core, and another level is shared among all processing
cores. Why are caching systems designed this way?
Consider an SMP system similar to the one shown in Figure 1.6. Illustrate
with an example how data residing in memory could in fact have a
different value in each of the local caches.
Discuss, with examples, how the problem of maintaining coherence of
cached data manifests itself in the following processing environments:
a.
Single-processor systems
b.
Multiprocessor systems
c.
Distributed systems
52
Chapter 1 Introduction
1.25
1.26
1.27
1.28
1.29
1.30
Describe a mechanism for enforcing memory protection in order to
prevent a program from modifying the memory associated with other
programs.
Which network configuration— LAN or WAN —would best suit the
following environments?
a.
A campus student union
b.
Several campus locations across a statewide university system
c.
A neighborhood
Describe some of the challenges of designing operating systems for
mobile devices compared with designing operating systems for tradi-
tional PCs.
What are some advantages of peer-to-peer systems over client-server
systems?
Describe some distributed applications that would be appropriate
forpeer-to-peer system.
Identify several advantages and several disadvantages of open-source
operating systems. Include the types of people who would find each
aspect to be an advantage or a disadvantage.
a

  1. 2015-02-01 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] DMA memory and CPU activity
  2. 2015-02-01 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] DMA memory and CPU activity
  3. 2015-02-01 Ruben <ruben.safir-at-my.liu.edu> Subject: [LIU Comp Sci] DMA memory and CPU activity
  4. 2015-02-02 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] DMA memory and CPU activity
  5. 2015-02-02 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Operating System History
  6. 2015-02-02 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Operating System History
  7. 2015-02-02 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] study hall today
  8. 2015-02-02 Kamran <kamran.mirzayev-at-my.liu.edu> Re: [LIU Comp Sci] [announce-at-lists.isoc-ny.org: [isoc-ny] Two NYC
  9. 2015-02-02 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] blackboard notice
  10. 2015-02-02 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Landing Jobs in the IT Field
  11. 2015-02-02 Ruben <ruben.safir-at-my.liu.edu> Subject: [LIU Comp Sci] Operating System History
  12. 2015-02-02 Ruben <ruben.safir-at-my.liu.edu> Subject: [LIU Comp Sci] Operating Systems Quiz
  13. 2015-02-02 Ruben <ruben.safir-at-my.liu.edu> Subject: [LIU Comp Sci] Re: Operating System History
  14. 2015-02-02 Ruben <ruben.safir-at-my.liu.edu> Subject: [LIU Comp Sci] Re: Operating System History
  15. 2015-02-02 mrbrklyn-at-panix.com Subject: [LIU Comp Sci] [announce-at-lists.isoc-ny.org: [isoc-ny] Two NYC meetups Tuesday]
  16. 2015-02-03 Ruben <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] [announce-at-lists.isoc-ny.org: [isoc-ny] Two NYC
  17. 2015-02-04 Tony Genao <tony.genao-at-my.liu.edu> Re: [LIU Comp Sci] Compus Meeting
  18. 2015-02-04 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Compus Meeting
  19. 2015-02-04 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Compus Meeting
  20. 2015-02-04 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] [announce-at-lists.isoc-ny.org: [isoc-ny] Two NYC
  21. 2015-02-04 Tony Genao <tony.genao-at-my.liu.edu> Re: [LIU Comp Sci] [announce-at-lists.isoc-ny.org: [isoc-ny] Two NYC
  22. 2015-02-04 Kamran <kamran.mirzayev-at-my.liu.edu> Re: [LIU Comp Sci] [announce-at-lists.isoc-ny.org: [isoc-ny] Two NYC
  23. 2015-02-04 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] [announce-at-lists.isoc-ny.org: [isoc-ny] Two NYC
  24. 2015-02-04 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] (fwd) Operating System Design
  25. 2015-02-04 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] (fwd) Operating System Design
  26. 2015-02-04 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] (fwd) Operating System Design
  27. 2015-02-04 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] (fwd) Operating System Design
  28. 2015-02-04 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] (fwd) Operating System Design
  29. 2015-02-04 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] (fwd) Operating System Design
  30. 2015-02-04 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] (fwd) Operating System Design
  31. 2015-02-04 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] (fwd) Operating System Design
  32. 2015-02-04 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] (fwd) Re: Operating System Design
  33. 2015-02-04 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] (fwd) Re: Operating System Design
  34. 2015-02-04 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] (fwd) Re: Operating System Design
  35. 2015-02-04 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] (fwd) Re: Operating System Design
  36. 2015-02-04 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] (fwd) Re: Operating System Design
  37. 2015-02-04 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] (fwd) Re: Operating System Design
  38. 2015-02-04 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] algorithms pop tarts
  39. 2015-02-04 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] cgroups meeting
  40. 2015-02-04 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Compus Meeting
  41. 2015-02-04 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Essentail Database tools
  42. 2015-02-04 Ruben <ruben.safir-at-my.liu.edu> Subject: [LIU Comp Sci] tony
  43. 2015-02-04 mrbrklyn-at-panix.com Subject: [LIU Comp Sci] [info-at-fsf.org: Gorgeous animated video against DRM]
  44. 2015-02-05 Tony Genao <tony.genao-at-my.liu.edu> Re: [LIU Comp Sci] tony
  45. 2015-02-05 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] tony
  46. 2015-02-05 Tony Genao <tony.genao-at-my.liu.edu> Re: [LIU Comp Sci] tony
  47. 2015-02-05 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] SOC assignment
  48. 2015-02-05 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] [NYLXS - HANGOUT] Very Good Jobs
  49. 2015-02-07 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] [mrbrklyn-at-panix.com: (fwd) Re: why not use naked delete ?]
  50. 2015-02-07 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] [mrbrklyn-at-panix.com: (fwd) Re: why not use naked delete ?]
  51. 2015-02-07 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] [mrbrklyn-at-panix.com: (fwd) Re: why not use naked delete ?]
  52. 2015-02-08 mrbrklyn-at-panix.com Subject: [LIU Comp Sci] Double Stacks
  53. 2015-02-08 mrbrklyn-at-panix.com Subject: [LIU Comp Sci] Double Stacks
  54. 2015-02-08 mrbrklyn-at-panix.com Subject: [LIU Comp Sci] [announce-at-lists.isoc-ny.org: =?utf-8?Q?=5B?=
  55. 2015-02-09 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Fwd: Invitation: cgroups and cgroups v2
  56. 2015-02-09 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] OS Design
  57. 2015-02-10 Ruben <ruben.safir-at-my.liu.edu> Subject: [LIU Comp Sci] Fwd: operating systems design
  58. 2015-02-10 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Student Computer Sciences Study Center
  59. 2015-02-10 mrbrklyn-at-panix.com Subject: [LIU Comp Sci] [info-at-meetup.com: Invitation: NYLUG Open hacker hours]
  60. 2015-02-10 mrbrklyn-at-panix.com Subject: [LIU Comp Sci] [info-at-meetup.com: Monday: Join 56 Rubyists at "Project Night"]
  61. 2015-02-11 Maneesh Kongara <maneeshkongara-at-gmail.com> Re: [LIU Comp Sci] Friday Morning Volunteer
  62. 2015-02-11 Ruben <ruben.safir-at-my.liu.edu> Re: [LIU Comp Sci] Friday Morning Volunteer
  63. 2015-02-11 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Re: [NYLXS - HANGOUT] Friday Morning Volunteer
  64. 2015-02-11 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] tony
  65. 2015-02-11 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Friday Morning Volunteer
  66. 2015-02-11 Ruben <ruben.safir-at-my.liu.edu> Subject: [LIU Comp Sci] Re: [NYLXS - HANGOUT] Friday Morning Volunteer
  67. 2015-02-11 Ruben <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Re: [NYLXS - HANGOUT] Friday Morning Volunteer
  68. 2015-02-11 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Towers of Hanio
  69. 2015-02-12 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] NEtworking Class
  70. 2015-02-12 Ruben <ruben.safir-at-my.liu.edu> Subject: [LIU Comp Sci] Re: Operating Systems (CS_643_001_BK_SPRG2015): Next Meeting Friday
  71. 2015-02-12 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Re: [NYLXS - HANGOUT] Friday Morning Volunteer
  72. 2015-02-12 mrbrklyn-at-panix.com Subject: [LIU Comp Sci] [announce-at-lists.isoc-ny.org: =?utf-8?Q?=5B?=
  73. 2015-02-12 mrbrklyn-at-panix.com Subject: [LIU Comp Sci] [dmarti-at-zgp.org: [linux-elitists] No results found for "social
  74. 2015-02-13 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Fwd: Re: Operating Systems (CS_643_001_BK_SPRG2015): Next Meeting
  75. 2015-02-15 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Friday Morning Volunteer
  76. 2015-02-15 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Re: Journal Article
  77. 2015-02-16 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Home Works
  78. 2015-02-17 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] OS Class Ctp 2 Dtrace
  79. 2015-02-18 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Hwk4 Allorithms
  80. 2015-02-18 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Recursive Allorithms
  81. 2015-02-19 From: "keisha.sylvester" <keisha.sylvester-at-my.liu.edu> RE: [LIU Comp Sci] Hwk4 Allorithms
  82. 2015-02-19 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Hwk4 Allorithms
  83. 2015-02-19 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Midterm Exams Samples
  84. 2015-02-20 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] a little C++ insite
  85. 2015-02-22 Ruben <ruben.safir-at-my.liu.edu> Re: [LIU Comp Sci] Binary tree Excersize
  86. 2015-02-22 Ruben <ruben.safir-at-my.liu.edu> Re: [LIU Comp Sci] Binary tree Excersize
  87. 2015-02-22 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Binary tree Excersize
  88. 2015-02-22 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Binary tree Excersize
  89. 2015-02-23 From: "keisha.sylvester" <keisha.sylvester-at-my.liu.edu> RE: Re: [LIU Comp Sci] Binary tree Excersize
  90. 2015-02-23 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Binary tree Excersize
  91. 2015-02-23 Keisha Sylvester <keisha.sylvester-at-my.liu.edu> Re: [LIU Comp Sci] Binary tree Excersize
  92. 2015-02-23 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Binary tree Excersize
  93. 2015-02-23 Ruben <ruben.safir-at-my.liu.edu> Re: [LIU Comp Sci] Binary tree Excersize
  94. 2015-02-23 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] scheduler resources
  95. 2015-02-23 Maneesh Kongara <maneeshkongara-at-gmail.com> Re: [LIU Comp Sci] Study Schedule for Tuesday
  96. 2015-02-23 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Study Schedule for Tuesday
  97. 2015-02-23 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Operating Systems Class on Friday
  98. 2015-02-23 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] scheduler resources
  99. 2015-02-23 Ruben <ruben.safir-at-my.liu.edu> Subject: [LIU Comp Sci] Study Schedule for Tuesday
  100. 2015-02-24 From: "keisha.sylvester" <keisha.sylvester-at-my.liu.edu> RE: Re: [LIU Comp Sci] Binary tree Excersize
  101. 2015-02-24 Ruben Safir <mrbrklyn-at-panix.com> Re: Re: [LIU Comp Sci] Binary tree Excersize
  102. 2015-02-24 From: "keisha.sylvester" <keisha.sylvester-at-my.liu.edu> RE: Re: [LIU Comp Sci] Study Schedule for Tuesday
  103. 2015-02-24 Maneesh Kongara <maneeshkongara-at-gmail.com> Re: [LIU Comp Sci] Binary tree Excersize
  104. 2015-02-24 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Binary tree Excersize
  105. 2015-02-24 Keisha Sylvester <keisha.sylvester-at-my.liu.edu> Re: [LIU Comp Sci] Study anyone??
  106. 2015-02-24 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Study anyone??
  107. 2015-02-25 Ruben <ruben.safir-at-my.liu.edu> Re: [LIU Comp Sci] Binary tree Excersize
  108. 2015-02-25 Ruben Safir <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Binary tree Excersize
  109. 2015-02-25 Keisha Sylvester <keisha.sylvester-at-my.liu.edu> Re: [LIU Comp Sci] Binary tree Excersize
  110. 2015-02-26 Ruben <mrbrklyn-at-panix.com> Re: [LIU Comp Sci] Binary tree Excersize
  111. 2015-02-26 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Campus
  112. 2015-02-26 Ruben <ruben.safir-at-my.liu.edu> Subject: [LIU Comp Sci] Fwd: [NYLXS - HANGOUT] Bios
  113. 2015-02-26 Ruben <ruben.safir-at-my.liu.edu> Subject: [LIU Comp Sci] Re: Fwd: [NYLXS - HANGOUT] Bios
  114. 2015-02-26 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] [mrbrklyn-at-panix.com: (fwd) Re: Role of functional dependencies in
  115. 2015-02-26 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] [mrbrklyn-at-panix.com: (fwd) Re: Role of functional dependencies in
  116. 2015-02-26 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] [mrbrklyn-at-panix.com: (fwd) Re: Role of functional dependencies in
  117. 2015-02-26 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] [mrbrklyn-at-panix.com: (fwd) Re: Role of functional dependencies in
  118. 2015-02-26 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] [mrbrklyn-at-panix.com: (fwd) Re: Role of functional dependencies in
  119. 2015-02-26 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] [mrbrklyn-at-panix.com: (fwd) Re: Role of functional dependencies in
  120. 2015-02-26 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] [mrbrklyn-at-panix.com: (fwd) Re: Role of functional dependencies in
  121. 2015-02-26 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] [mrbrklyn-at-panix.com: (fwd) Re: Role of functional dependencies in
  122. 2015-02-26 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] [mrbrklyn-at-panix.com: (fwd) Re: Role of functional dependencies in
  123. 2015-02-26 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] [mrbrklyn-at-panix.com: (fwd) Re: Role of functional dependencies in
  124. 2015-02-26 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] [mrbrklyn-at-panix.com: (fwd) Re: Role of functional dependencies in
  125. 2015-02-26 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] [mrbrklyn-at-panix.com: (fwd) Re: Role of functional dependencies in
  126. 2015-02-26 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] [mrbrklyn-at-panix.com: (fwd) Role of functional dependencies in
  127. 2015-02-26 Ruben Safir <mrbrklyn-at-panix.com> Subject: [mrbrklyn-at-panix.com: (fwd) Re: [LIU Comp Sci] Need tutoring on
  128. 2015-02-26 Ruben Safir <mrbrklyn-at-panix.com> Subject: [mrbrklyn-at-panix.com: (fwd) Re: [LIU Comp Sci] Need tutoring on
  129. 2015-02-26 Ruben Safir <mrbrklyn-at-panix.com> Subject: [mrbrklyn-at-panix.com: (fwd) Re: [LIU Comp Sci] Need tutoring on
  130. 2015-02-26 Ruben Safir <mrbrklyn-at-panix.com> Subject: [mrbrklyn-at-panix.com: (fwd) Re: [LIU Comp Sci] Need tutoring on
  131. 2015-02-27 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] a hate this question
  132. 2015-02-27 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Allorithms Midterm
  133. 2015-02-27 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Read the FUCKING NOTES
  134. 2015-02-28 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Allgorithm Examination
  135. 2015-02-28 Ruben <ruben.safir-at-my.liu.edu> Subject: [LIU Comp Sci] Linked List Test Question
  136. 2015-02-28 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] Re: [NYLXS - HANGOUT] Read the FUCKING NOTES
  137. 2015-02-28 Ruben Safir <mrbrklyn-at-panix.com> Subject: [LIU Comp Sci] [prmarino1-at-gmail.com: Re: [NYLXS - HANGOUT] Read the FUCKING NOTES

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