Question: In the IBM/370, memory protection is provided through the use of keys. A key is a 4-bit quantity. Each 2K block of memory has a

In the IBM/370, memory protection is provided through the use of keys. A key is a 4-bit quantity. Each 2K block of memory has a key (the storage key) associated with it? The CPU also has a key (the protection key) associated with it. A store operation is allowed only if both keys are equal, or if either is zero. Which of the following memory-management schemes could be used successfully with this hardware?
a. Bare machine
b. Single-user system
c. Multiprogramming with a fixed number of processes
d. Multiprogramming with a variable number of processes
e. Paging
f. Segmentation

Step by Step Solution

★★★★★

3.41 Rating (151 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

a Protection not necessary set system key to 0 ... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

E-CE-OS (100).docx

120 KBs Word File

Students Have Also Explored These Related Computer Engineering Questions!

Segmentation is similar to paging but uses variable-sized pages. Define two segment replacement algorithms based on FIFO and LRU page-replacement schemes. Remember that since segments are not the...

A single carousel storage system has an oval rail loop that is = 30 ft long and 3 ft wide. Sixty carriers are equally spaced around the oval. Suspended from each carrier are 5 bins. Each bin has a...

If a CPU issues one memory request every instruction and the computer runs at 200 MIPS, about how many CPUs will it take to saturate a 400-MHz bus? Assume that a memory reference requires one bus...

Lesson 12 Quiz (Show/Explain all Work) IST 230 Relations on Sets, Databases 1. Let A = {0, 1, 2, 3, 4, 5, 6, 7, 8} and B = {1, 2, 3, 4, 5, 6, 7, 8}. Now let R be a binary relation R from A to B such...

I have to create a program in C and I can't figure it out. The program has to read a source file. Please help. /******************************************************************** PROJECT: Glossary...

I need a 10 page paper for my MIS class. Please do not copy and paste as my school is getting stricter on plagiarism. I have attached the assignment and the sample \fData Analytic Thinking 1 Data...

answer all questions promptly What is the maximum segment length of a 100Base-FX netdwork,Thelast character('X', etc) refers to the line code method used. Line code is a pattern of voltage, current...

The new line character is utilized solely as the last person in each message. On association with the server, a client can possibly (I) question the situation with a client by sending the client's...

QUIZ... Let D be a poset and let f : D D be a monotone function. (i) Give the definition of the least pre-fixed point, fix (f), of f. Show that fix (f) is a fixed point of f. [5 marks] (ii) Show that...

This is the topic of Accounting Information System. I need imfortant MCQ, True False, Matching, regarding this chapter. Prepared by Paula Funkhouser University of Nevada, Reno Core Concepts of...

The capital balances of Happy and Sad are as follows: Happy, Capital (20%). Sad, Capital (80%). 60,000 20,000 The net assets of the partnership approximate fair values. If Angry wants to invest in...

What is the difference between a secured loan and an unsecured loan?

An asset management ratio that provides the account officer some insight into how efficiently the applicant firm manages its inventory is the ratio. number of days sales in recelvables number of days...

What does the term cash mean in business?

An insurance company must make payments to a customer of $ 1 2 million in one year and $ 6 million in three years. The yield curve is flat at 8 % . a . If it wants to fully fund and immunize its...

What is the difference between American and European Options? American options are trading on American exchanges, while European options are trading on European exchanges exclusively. American...

Problem 9 - 1 7 Comparing Investment Criteria ( LO 1 , 2 , 3 , 5 , 7 ) Consider the following two mutually exclusive projects:Year 0 1 2 3 4 Cash Flow ( A ) - 5 3 5 0 , 0 0 0 4 5 , 0 0 0 6 5 , 0 0 0...