Protection and Security Questions

MCQ bookmark_border

101.

How can fence and relocation be used together?

A

To each program address, the contents of fence register are added

B

To contents of fence register is subtracted from actual address of program

C

To each program address, the contents of fence register are not added

D

None of the mentioned

Correct Answer: A

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

102.

What is the basic need in protecting memory in multi-user environment?

A

We need two registers one

B

We need a variable register

C

A fence register has to be used known as base register.

D

None of the mentioned

Correct Answer: C

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

103.

What is the role of base/bound registers?

A

They give starting address to a program

B

Program

C

They provide encrypted environment

D

This technique doesn

Correct Answer: B

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

104.

What is all-or-nothing situation for sharing in memory?

A

Program makes all its data available to be accessed

B

It prohibits access to some

C

It creates rules who can access program memory

D

It separates program memory and data memory

Correct Answer: A

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

105.

How is disadvantage of all-or-nothing approach overcome?

A

Base/Bound

B

Relocation technique

C

Fence method

D

Tagged architecture

Correct Answer: D

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

106.

What is true regarding tagged architecture?

A

Every word of machine memory has one or more extra bits

B

Extra bits are used to do padding

C

Extra bits are not used to identify rights to that word

D

It is very compatible to code upgrades

Correct Answer: A

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

107.

What is best solution to have effect of unbounded number if base/bound registers?

A

Tagged architecture

B

Segmentation

C

Fence method

D

None of the mentioned

Correct Answer: B

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

108.

What is a major feature of segmentation?

A

Program is divided in data memory and program memory

B

Program is executed in segments

C

Program is divided into pieces having different access rights

D

It has effect of an unbounded architecture

Correct Answer: C

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

109.

What is the correct way the segmentation program address is stored?

A

name, offset

B

start, stop

C

access, rights

D

offset, rights

Correct Answer: A

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

110.

What is the main objective of protection?

A

Ensure all objects are protected individually

B

Objects have different priority and thus different levels of protection

C

Ensure that each object is accessed correctly and only by allowed processes

D

None of the mentioned

Correct Answer: C

None.

Check Answer report_problem Report forum Discussion