Protection and Security Questions

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111.

What is the principle of least privilege?

A

Less privileges provide difficulty in executing admin tasks

B

Users can get temporary high privilege access

C

Users should be given just enough privileges to perform their tasks

D

None of the mentioned

Correct Answer: C

None.

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112.

What is the need of protection?

A

Prevent mischievous violation

B

Prevent and intentional

C

Ensure that each program component uses resources allotted to it only

D

All of the mentioned

Correct Answer: D

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113.

What are the incorrect methods of revocation of access rights?

A

Immediate/Delayed

B

Selective/General

C

Partial/total

D

Crucial

Correct Answer: D

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114.

Why is it difficult to revoke capabilities?

A

They are too many

B

They are not defined precicely

C

They are distributed throughout the system

D

None of the mentioned

Correct Answer: C

None.

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115.

What is the reacquisition scheme to revoke capability?

A

When a process capability is revoked then it won

B

Pointers are maintained for each object which can be used to revoke

C

Indirect pointing is done to revoke object

D

Master key can be used compare and revoke.

Correct Answer: A

None.

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116.

What is false regarding Back-Pointers scheme to revoke capability?

A

List of pointers is maintained with each object

B

When revocation is required these pointers are followed

C

This scheme is not adopted in MULTICS system

D

These point to all capabilities associated with that object

Correct Answer: C

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117.

What is true about Indirection to revoke capability?

A

Capabilities point indirectly to the objects

B

Each capability will not have a unique entry in global

C

Table entries cannot be reused for other capabilities

D

This system was adopted in MULTICS system

Correct Answer: A

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118.

How can Keys be defined or replaced?

A

create [keyname] [bits]

B

set-key

C

Key

D

MAKE [Key Name]

Correct Answer: B

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119.

What are the characteristics of the Hydra system?

A

It consists of known access rights and interpreted by the system

B

A user can of protection system can declare other rights

C

Hydra system is not flexible

D

Hydra doesn

Correct Answer: A

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120.

What are the characteristics of rights amplification in Hydra?

A

This scheme allows a procedure to be certified as trustworthy

B

Amplification of rights cannot be stated explicitly in declaration

C

It includes kernel rights such as read

D

All of the mentioned

Correct Answer: A

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