OS: File Management

OS: File Management

How the OS abstracts your files

Multiple Select

In this lesson I am going to learn ... ?

• How the OS oragnises files and allocates space

• Calculate storage space required for a particular file

• How OS uses file permissions

• Select appropriate level of access

Multiple Choice

Which one of these options is NOT under the control of the OS?

• File management

• Process management

• User management

• Memory management

• Time management

Multiple Choice

What name is given to the type of file organisation shown in the diagram?

• Functional

• Structural

• Procedural

• Hierarchical

Fill in the Blanks

Multiple Choice

When a hard disk is formatted a number of invisible __________ are laid down on the disk surface. ____________ divide the disk surface into areas a bit like slices of pizza. File data is divided up into ___________ and stored in these areas.

• tracks, sectors, blocks

• blocks, tracks, sectors

• sectors, tracks, blocks

• tracks, blocks, sectors

Multiple Choice

A mebibyte is 2 to the power of ____________ bytes?

• 10

• 20

• 30

• 40

Multiple Choice

A hard disk allocates space using a block size of 256 bytes.

A file is 8.2 MiB in size.

Which Python expression shows how many blocks are needed to store this file?

• = math.ceil(8.2*1024*/256)

• = math.ceil(8.2*1024*1024/256)

• = (8.2*1024*1024//256)

Multiple Select

Choose all the valid operations that the OS can carry out on a file ...

• open

• execute

• print

• copy

• corrupt

Fill in the Blanks

Fill in the Blanks

Fill in the Blanks

Multiple Choice

Which one is NOT a recognised file access permission?

• read

• write

• execute

• delete

• copy

Multiple Choice

Mr Turing is a Computer Science teacher in a senior school.

Mr Gates is the IT systems manager for the school.

What levels of permission should each be given for the school's main shared folder on OneDrive?

• Turing - read

  Gates - read/write/execute

• Turing - read/write

  Gates - read

• Turing - read/write

  Gates - execute

Multiple Choice

Mr Turing is a Computer Science teacher in a senior school.

Bill Gates is a GCSE Computer Science student.

What levels of permission should each be given for the department 's main shared teaching folder on OneDrive?

• Turing - read/write/delete

  Gates - read

• Turing - read

  Gates - read/write/execute

• Turing - read/write

  Gates - read/delete

Multiple Select

In this lesson I have learned to ...

• Describe how OS organises files

• Calcu;ate storage blocks required

• Describe types of file permission and how used

Open Ended

Thinking Hard

Write three questions that this lesson so far has answered...

(press Shift+Enter to take a new line ...)

Poll

How much of this lesson have you understood?

• None of it

• Some of it

• Most of it

• All of it