sondos
06-12-2005, 08:21 AM
السلام عليكم
اصدقائي في المنتدي انا طالبة حاسوب وانا قاعدة ادرس ال concurrency system
وانا قاعدة احل ما لقيت أسالة ما لها مثيل في الكتاب وحاولت احلهم ما عرفت له عشان كذي بنزلهم واي واحد عنه فكرة الحل يشرحلي
او يعرف موقع يشرح عن ال بشكل مبسط ولغة سهة concrrency sytem
او السؤال الي نزلته ياليت ينزله لاني محتاجة لهذا الشي
قاعدة احضر من الحين للفاينال لان درجاتي وايد ضعيفة والمعيد ما يرض يجاوب او يشرح والصراحة تكاليف الدراسة وايد علي اهلي يدفعون للدراسة وما يقدرون يدفعون زيادة للدروس الخصوصية
السؤال هو
(c) Messages are being sent between two computers, P and Q, of a distributed system. Assume that events on Computer P are recorded (for example, as (p5, 63), where p5 is the name of the event and 63 is the local time of Computer P), and that events are similarly recorded on Computer Q. Explain briefly what synchronising steps, if any, would need to be taken in the case of the following messages: • Message 1: sending event (p3, 54); receiving event (q1, 55); • Message 2: sending event (q34, 92); receiving event (p51, 90).
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Q:how many entries could there be in a process page table in a system with 32-bit addresses and 1 Kbyte page size?
Q:
(a)explain the structure and operation of amulti-level page table.
(b)A computer ststem uses non-segmented 128-bit virtual addresses mapping pages of size 8 Kbytes with 256 Mbytes of physical memory .show why a multi-level page table would not be effective here.
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Q:explain by means of a simplified example the basic idea behind guarded page tables Assume an 18 bit virtual address and apage size of 1Kbyte
Assume that 2 bits are resolved at a time
(a) how many pages can process have?
(b) how many entries does each page table have?
(c)how deep is the hierarchy of page tables?
(d)Assume that aprocess has three clusters ,each of two pages (choose their location in the virtual address space)with the rest of the virtual address space unused .Define guards for each page table.
اصدقائي في المنتدي انا طالبة حاسوب وانا قاعدة ادرس ال concurrency system
وانا قاعدة احل ما لقيت أسالة ما لها مثيل في الكتاب وحاولت احلهم ما عرفت له عشان كذي بنزلهم واي واحد عنه فكرة الحل يشرحلي
او يعرف موقع يشرح عن ال بشكل مبسط ولغة سهة concrrency sytem
او السؤال الي نزلته ياليت ينزله لاني محتاجة لهذا الشي
قاعدة احضر من الحين للفاينال لان درجاتي وايد ضعيفة والمعيد ما يرض يجاوب او يشرح والصراحة تكاليف الدراسة وايد علي اهلي يدفعون للدراسة وما يقدرون يدفعون زيادة للدروس الخصوصية
السؤال هو
(c) Messages are being sent between two computers, P and Q, of a distributed system. Assume that events on Computer P are recorded (for example, as (p5, 63), where p5 is the name of the event and 63 is the local time of Computer P), and that events are similarly recorded on Computer Q. Explain briefly what synchronising steps, if any, would need to be taken in the case of the following messages: • Message 1: sending event (p3, 54); receiving event (q1, 55); • Message 2: sending event (q34, 92); receiving event (p51, 90).
****************
Q:how many entries could there be in a process page table in a system with 32-bit addresses and 1 Kbyte page size?
Q:
(a)explain the structure and operation of amulti-level page table.
(b)A computer ststem uses non-segmented 128-bit virtual addresses mapping pages of size 8 Kbytes with 256 Mbytes of physical memory .show why a multi-level page table would not be effective here.
**************
Q:explain by means of a simplified example the basic idea behind guarded page tables Assume an 18 bit virtual address and apage size of 1Kbyte
Assume that 2 bits are resolved at a time
(a) how many pages can process have?
(b) how many entries does each page table have?
(c)how deep is the hierarchy of page tables?
(d)Assume that aprocess has three clusters ,each of two pages (choose their location in the virtual address space)with the rest of the virtual address space unused .Define guards for each page table.