Module 4 Revision OPERATING SYSTEMS (2) 1 Describe why an operating system is needed for any computer. 2 List some of the different types of operating system used on mainframe or minicomputers. 3 Explain how a computer operator on a mainframe computer interacts with the operating system.

burpfancyElectronics - Devices

Nov 8, 2013 (3 years and 7 months ago)

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Module 4 Revision

OPERATING SYSTEMS (2)


1

Describe why an operating system is needed for any computer.

2

List some of the different types of operating system used on mainframe
or minicomputers.

3

Explain how a computer operator on a mainframe computer i
nteracts
with the operating system.

4

Explain what is meant by batch processing.

5

Multitasking and multiprogramming are often used on large computers.
Explain what is meant by these terms.

6

In a multitasking operating system efficient scheduling can b
e use to
increase productivity. How is this so?

7

Compare and contrast hardware and software interrupts, giving two
examples of each type.

8

Why is it necessary to assign different priorities to different interrupts?

9

Discuss how fixed and variable par
titioning may be used in the memory
management of a multitasking operating system.

10

What is meant by virtual memory. How does it increase the number of
tasks that can be tackled ‘simultaneously’?



What is meant by the term ‘thrashing’?



䡯e⁤oe猠
瑩te⁳ a物ng⁧iveany⁵獥牳ra捣c獳⁴o⁡⁣ mpu瑥爠獹獴sm?
䡯e⁣ n⁩琠be u獥d⁴o⁩mp汥men琠a 汴楴l獫楮g⁥nv楲onment?



thy⁩猠楴 a⁧ood⁩ ea⁴o⁨ave mo牥r瑨anne ma楮ip牯捥獳o爠rn⁡污lge
捯mpu瑥爠獹獴sm?⁈ w⁣ u汤l瑨楳⁡楤ire汩ab楬楴i?



that fun捴楯
n猠s映anpe牡瑩rg⁳ 獴sm en獵re⁴ha琠e晦楣ient⁵獥⁩猠浡 e
of⁴he⁶a獴snumbe爠r映pe物phe牡氠rev楣敳i捯nne捴cd⁴o 瑨e 楮i
捯mpu瑥r?



The⁄ A⁣ n瑲t汬e爠re汰猠瑯 make⁣ 牴a楮iaspe捴猠o映瑨e⁣ mpu瑥爠
exe捵瑥 mo牥ⁱu楣歬y⸠that⁩猠浥 n琠by⁄ A⁡nd⁨ow⁤oe
s⁩琠he汰lin
瑨楳⁷ay?



thy⁩猠a f牯rt
-
end⁰牯捥獳s爠reeded on 牧e 楮f牡me⁣omputer
獹獴sm猿



that⁩猠 he⁤i晦e牥rce be瑷een⁣ n瑲t汩獥d⁡nd⁤楳瑲ibu瑥d⁰牯re獳楮s?



Why was centralised processing more important in the 1970’s but
d楳瑲ibu瑥d
computing more important in the 1990’s?



i楳琠iwo⁤i晦e牥n琠method猠ssed 瑯 p牯瑥捴⁡ga楮獴⁵nau瑨o物獥d⁡捣e獳s
瑯⁩ 景牭a瑩tn on mu汴l
-
u獥爠rpe牡瑩rg⁳ 獴sm献


a

that⁩猠 ob⁣on瑲t氠污nguage?

b

i楳琠i 晥w⁴h楮i猠snde牴r步n⁢y⁡n ope牡瑩tg⁳ 獴sm.

c

that⁩猠 ead汯捫
 爠獴a牶a瑩tn⤿

d

䡯e⁩猠 u晦e物ngf⁨elp⁷hen⁲ nn楮i⁡n ope牡瑩rg⁳ 獴sm?